FREE hot water from Solar dump! | EP51 | Ford Transit Campervan Build
Рет қаралды 29,697
3 жыл бұрынFree hot water! As the title says. This is my use of a "Solar Dump" in my van. With the batteries normal full by midday during the summer I find that I am missing out on almost 7 hours of solar energy.
This is only a secondary passive way I heat my water. ( free hot water in my self built campervan ) My Bobilvans hot water heater using my Diesel heater to my primary way
So I built a "Solar Dump". This basically somewhere for solar energy to go after the batteries are full. If my case I use it to heat my hot water tank.
With a 300W heating element and 500w of solar on the roof. Normally after the batteries are full it will take around 2 hours for the hot water tank to get from 25c to 60c.
The solar dump here is triggered by Voltage. 13.53v turn on ( 94%ish battery ) and 13.15v to turn off ( 75-80% ) if it becomes cloudy or overnight. SOC would be a better option as a trigger.
This would be scalable for vans with a larger or smaller amount of solar panels on the roof. A van with 200-300watts of solar panels might want to go for a smaller 100-150watt heating element.
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Welcome to my Ford Transit Mk8 Van build series.
My name is Alex Frood, I’m a UK based Freelance Expedition Leader and Outdoor instructor. During a Uk Covid-19 Lockdown I am converting my 2018 Ford Transit Mk8 L3H3 into a full-time Camper.
These videos are not How-to videos but showing my process for my conversion. feel free to copy me but id always recommend doing your own research as well.
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@theoteam4641 3 жыл бұрын
Wow very good idea, I can’t wait to add that in our next van build 😊
@markchurchward482 3 жыл бұрын
Great system mate really useful info. Glad to see you out on your travels, enjoy 😉
@MispronouncedAdventures 3 жыл бұрын
Thank you. It’s great to be traveling again
@willdowding3810 3 жыл бұрын
Thanks again, extremely helpful video ( or whatever you call it, to old for the right jargon) cheers happy motoring cheers
@keithpringle1103 2 жыл бұрын
I'm fitting the Bobil system with 12 volt element soon and you answered one of my questions about the heater element in this video, thank you!
@MispronouncedAdventures 2 жыл бұрын
Definitely a brilliant addition to the van for the summer months
@lifebeyondbricks 2 жыл бұрын
Was lovely to meet you at the show. I now have proper 12 volt system envy and has given me the enthusiasm to tidy up and optimise our setup.
@MispronouncedAdventures 2 жыл бұрын
Great to meet you too, it’s alway fun tinkering with Electrics
@psyamok3735 2 жыл бұрын
Excellent system!
@MispronouncedAdventures 2 жыл бұрын
Thanks you, I’m very happy with it and it’s been great over the summer months and after a long drive
@evil17 Жыл бұрын
Good job, nice build, great vid & info. Cheers
@MispronouncedAdventures Жыл бұрын
Thank you, glad it been helpful
@brendanryan262 3 жыл бұрын
Very cool setup.
@MispronouncedAdventures 3 жыл бұрын
Cheers
@ulf5738 Жыл бұрын
Love these videos 😀 great work man! Norway salutes you! 🇳🇴
@MispronouncedAdventures Жыл бұрын
Thank you very much!
@Jabberwoky Жыл бұрын
I used to have a boat with solar and wind generation, this idea would have saved me a fortune in diesel over the years!
@MispronouncedAdventures Жыл бұрын
With a small boat with a roof you could definitely have it only powered by its own generate electric
@edwardutter6975 6 ай бұрын
You have designed and put together an awesome system. I am in a 25 ' camper and am trying to be non dependent on the grid. Thanks for a great video.
@MispronouncedAdventures 6 ай бұрын
Thank you very much and I hope you found the video helpful
@Paulsvanlife 3 жыл бұрын
Great set up👍
@MispronouncedAdventures 2 жыл бұрын
Cheers Paul
@RustyRoseAdventures 3 жыл бұрын
Looks great Alex! I saw this on bimble solar (where I guess you got your stuff) and always wanted to do it. Great to see someone else doing it!
@MispronouncedAdventures 3 жыл бұрын
Yeah both the element and 200a relay are from Bimble. I think it’s a great, after the initial set up and tweaking to your own system it’s pretty great to just forget about and run in the back ground
@surferjim 3 жыл бұрын
Awesome Idea!
@MispronouncedAdventures 3 жыл бұрын
Thank you
@paulthejudge 2 жыл бұрын
Brilliant about to fit Bobil style hot water system and wasn’t too happy about having to use the diesel heater in the summer and dump the excess heat outside just to get hot water so really pleased you’ve done this as I had thought about it. Our caravan is a oddball thing but thinks it’s a converted camper van. We are on a smaller scale with only 120w solar so may have to use a volume controller to drop wattage on 150w immersion but that’s the fun. Also I know our lithium battery is recharged by about 10 am in the summer months.
@MispronouncedAdventures 2 жыл бұрын
The 150w heaters are usually 2 x 75w individual elements. You might be able to remove the parallel bars so you could just choose to run one of the elements are not both. But generally it’s just nice to have a way of heating water in the background without having to think about it With the Bobil kit I didn’t really find there was a noticeable effect on the habitation area temperature for the 15 minutes or so I would be running it during the summer to heat water. I find the vast majority of the heat energy goes into the water the remaining air temperature wasn’t that warm
@paulthejudge 2 жыл бұрын
@@MispronouncedAdventures brilliant so the solar is free/excess power and the bobil can still be used in summer. I know what it’s like when it’s absolutely 30 degrees in caravan any extra heat you just don’t want. I’ve found some cartridge heaters on eBay that are 80 and 100 W which may suit better. Thank you very much.
@opera5714 3 жыл бұрын
Great explanation, you really understand the physics of the problem. PV diversion very misunderstood in the solar world. I built a version of this that diverts panel voltage proportionately to the heating element, be it 5W or 500W. I use grid tie panels for about 60V. The voltages higher voltages allow the use of 120V point of use tanks in the US without buying new elements. The system is based on a simple theory. When panel voltage rises above power point voltage there is excess power available. My board progressively increases load efficiently till the voltage drops down to power point. The change to load is instant, the battery charging cycles are not messed with, and the battery is always kept at as full charge as possible. The existing thermostat can still be used on DC due to arc interrupt. And site ac can still be used if the tank is kept with a plug connection. As electronics go it is fairly simple. Granted everyone is afraid of electronics. Those who have an interest it is a fun project. Thanks for sharing your insights with others explaining these concepts. There is power to be harvested and small amounts add up. I'm putting this system in a friends cargo trailer that has living space for hot water. He does trail bikes. It will also provide some heat when it sits parked lowering dampness that can damage the tools musty smells when sitting unused for a week in colder months.
@MispronouncedAdventures 3 жыл бұрын
Thank you for your comment and a technical at that. It’s great to see that there are other Solutions to the same purpose. Definitely need to read into a few of those for a better technical understanding myself. Especially since other ways could truly divert excess energy opposed to my rudimentary version of System based voltage triggers. I’d quite like to play around in the future use SOC as a triggers I feel that would be more accurate for my version. Overall a fun and useful project with cheap components I’ve effectively had spare
@waynesarahburns3871 2 жыл бұрын
That's awesome 👍
@MispronouncedAdventures 2 жыл бұрын
Thank you, I was pretty blown away with the results
@willdowding3810 3 жыл бұрын
Good stuff,just trying to figure out how to do dump load heater, getting negative response from heater sellers so thanks so much cheers take care
@MispronouncedAdventures 3 жыл бұрын
Hope you get it working. What type of negative responses where you getting and why?
@David_11111 3 жыл бұрын
@@MispronouncedAdventures maybe he thought using free electric would upset the diesel heater guys ! :)
@jobloggs7215 2 жыл бұрын
Still good for winter as prevents any icing up and a little pre-heating for diesel heat exchanger system. Obviously change setpoint to 10c or whatever
@MispronouncedAdventures 2 жыл бұрын
Definitely! It’s only in my hot tank and I live in a van full time its unlikely to get the vehicle cold enough for the hot tank to freeze. There are smaller wattage versions of these which are used as anti freezing options in fresh tanks if they are stored underneath the vehicle
@Squirrel_101 2 жыл бұрын
Really clever use of the excess solar! Lost me a bit on the technical side, but interesting to see how it's set up and all works!
@MispronouncedAdventures 2 жыл бұрын
Thank you. It’s been a great system for free hot water
@matthewknight5641 Жыл бұрын
Ive bought the solid state relays and all other stuff needed to make a solar dump loqd for my water heater. Ive not installed it yet but hopefully this weekend i can get it done
@MispronouncedAdventures Жыл бұрын
Hopefully you get it all sorted this weekend
@Beavis-et8ox 3 жыл бұрын
Its also a good additional effect that your Lithiums are never over a long time at 100% because they dont like that. I try to keep mine wirth the same principle of dump load always between 50% and 90%.
@MispronouncedAdventures 3 жыл бұрын
Indeed lithiums don’t enjoy long term at 100%. My 100% Soc is probably a bit under 100% of the batteries for capacity as I use some lower charge voltages. Additionally the parasitic drains I have in my system won’t allow batteries to stay full for long
@sun-sea-solar 3 жыл бұрын
This is genius. But your electronic knowledge is way more advanced than mine.
@MispronouncedAdventures 2 жыл бұрын
Thanks for the comment. My knowledge all just come from researching, experimenting and playing throughout the course of my van build
@OnlineopticsCoUk 3 жыл бұрын
Good to see you back matey... cool Idea for summer when you are not using Deisel heater perfect compromise as you will have less solar in winter when using Bobil setup... what ever happen to Part 3: Installing a Victron MultiPlus - LOL you where missing in action or I think you thought you had up loaded it or had problems with SD cards... cant remember ... anyway glad to have you back... great vid again...
@MispronouncedAdventures 3 жыл бұрын
Working for Bobilvans has kept me busy! I think it’s definitely Great combination to help with the Bobilvans water heater. Oh part 3 yep…. It’s taken way longer than it’s should. I even just bought the VE.bus smart dongle, so I can show that as well as the VE.bus to USB MK3 cable. and how they are both different
@marcass100 8 ай бұрын
So glad I found your channel mate. You explain everything I want to know in a quick simple way. You are a smart guy and I will definitely go through other videos to grab some ideas I haven't thought about yet before my build. The only question I have now would be about how much solar do you get in a winter from your panels and is it enough for you as I am debating if I should be fine with 800w or should I go 1200w solar but sacrifice skylight/daylight for assurance to get more solar in horrible winter days in UK to run induction cooking water heating two big fans etc. It is really hard to decide as real life scenarios cam be drastically different person to person. Thanks mate your videos are great and I am gonna watch another one now 😂
@nomadcarpenter8549 3 жыл бұрын
Neat idea
@MispronouncedAdventures 3 жыл бұрын
Thank you
@pau1phi11ips 3 жыл бұрын
Nice, I'd like to get this working all on the Victron Cerbo. There's 4 temp sensors and 2 relay outputs that you can control. I should be able to use the SOC value to trigger the relay instead of the battery voltage that way too.
@MispronouncedAdventures 3 жыл бұрын
The Cerbo Gx is something I have been thinking About. Due to its relays and I can use a SOC which would be a far more accurate way of doing it. At the moment I only have a raspberry pi running VRM so no relays . However I am planning to getting a Cerbo and likely integrate the System into that. I don’t know personally yet if the temperature input for the Cerbo can be used as triggers. so it might still need to by run via the temperature relay
@pau1phi11ips 3 жыл бұрын
@@MispronouncedAdventures There's no way to do it via menu options at the mo. I'm looking into doing via Python scripting. Control of relay 2 is kinda limited at the mo. There's a "Big" install of the Venus OS that has Node RED and apparently it should be easy with that but I haven't given it a go yet. The digital inputs on the Cerbo are kinda handy. There's a coach builders panel next to the drivers seat on the Boxer/Relay/Ducato/ProMaster. I've linked the door open on/off output there to one of the digital inputs so I can see the status of the doors in VRM.
@malcolmleick8405 3 жыл бұрын
I'd be really interested to see how you get on with this. I'm also installing a Cerbo and wondered if I could hook it up to my Whale Expanse Water Heater using a 240v relay. I'm not technical at all but I would love to capture all that wasted solar. I'll have 395w on the roof and I'm running a 300ah lithium battery. I also have the Sterling 60amp B2B charger which seems to a great job of charging the battery quickly. I'm doing a 3 week trip around England and Wales at the mo and unfortunately all. My victron kit arrived the day after I left. But the Sterling is more than dealing with the demands of my 12v system which is just the leds, usb charging, fridge. MaxAir and compost toilet fan. Roamer, my kit supplier, have just got back to and said yes this is possible with the Cerbo and a 250v relay . The Expanse can be set to 750w or 1500w so if I use the former it won't melt the EasyPlus 1600va inverter.
@willdowding3810 3 жыл бұрын
Hi thanks for getting back ,I asked wether a12 v element could be put in malalagar 5e . The answer was it would take too much current, as I’m not clever enough to put my case, I have 600w of solar and with a 100/50 controller potentially up to 50 amps, maybe I will go down the Bobil heater route ,appreciate your help thanks
@MispronouncedAdventures 3 жыл бұрын
Yeah I see what you mean. I imagine most companies don’t know the ins and outs of doing it, and how individual it needs to be for different people systems. So doing it yourself with a Bobilvans kit would be a good idea
@jeffsteinmetz7188 3 жыл бұрын
Great content! Very cool system! I have and still need to install a hydronic system that uses the fuel from the Van tank, but it also has an AC electric heating element intended for use if plugged into shore power. But I like your system as I do not plan to be plugged in much and don’t like the idea of leaving the inverter on all day. I guess if I am wasting 500 watts of solar while in “float” the overhead on from the inverter is nothing to be stressed about. With your water heated all day do you get much residual heat in the van? What size wire did you run for that 25 amps at 12V?
@MispronouncedAdventures 3 жыл бұрын
Residual heat wise not so much of an issue as the tank is heavily insulated. The cupboard it sits in gets a bit work but overall no effect on the van. Wire wise I’m using 10mm2 for the cable. I’m sure a AC electric element could be used. Just a relay or switch which can be triggered by a 12v / Dc signal
@alextop1850 Жыл бұрын
It be cool if after it heated the water tank it goes into heated floor pads , free energy keeping van warm
@GOLDVIOLINbowofdeath 11 ай бұрын
Not in the summer
@NevContractor1 Жыл бұрын
I think Im going to do this too, thx for the video. Seems churlish not to use spare energy and turn it into abundant hot water! Whats the name/manufacturer of the tank temperature trigger control please? As I intend to use the hot water tank for washing up and a normal shower (no a recirc one like yours), I need to consider how/when to fill the hot water tank. Obv I don't want to start filling the hot water tank as it's being used, as it would become cold quickly whilst being used. So I need to consider how to set an extra bit of logic to stop the charge process in case there is no water at all in the hot water tank , perhaps a float switch that will stop it charging. Any ideas/input from yourself? Thx.
@foreverventure1739 Жыл бұрын
Thanks very informative video. Quick question. If I had a 300 watt solar panel but the clouds come over and I for example get only 150 watts of power out of the panel; but don`t want to use the battery, would it still heat up or does it need the full 300 watts?
@MispronouncedAdventures Жыл бұрын
Glad it was helpful. It would still heat the water at the full 300w, if let’s so solar dropped to 150w. But the dump load really wouldn’t switch off after a few percent of the battery is drained. As I’ve built it to turn off if the battery state of charge starts and drop because the dump loaded only be on when there is an excess of power.
@koningbolo4700 Жыл бұрын
I like the system. I like to add something to the hot water system and that would be a coil which runs coolant through it to heat the water in the tank with engine heat. That way hot water is almost guaranteed, even in winter as long as the van is driven for a bit every day or every other day... I am planning such a system using a central heating hot water tank from a combination boiler which (for safety reasons) I use a copper pipe wrapped around the outside of the steel tank to get the drinking water hot. The steel tank itself contains the coolant and is heated by the electric element. Advantage of this method is that (though some heat is lost to the coolant plumbing) the toxic coolant has no chance to contaminate the drinking water and the heating element is protected from corrosion and scaling up (since it is heating coolant rather then drinking water which may contain calcium) The heating element I intend to use is based on mains power and has its own thermostat 10-65 degrees C. I could use the chinesium thermostat relay thingy like you have panel mounted but then I need to bypass the internal thermostat of the element which could help since I have the option to raise the temperature of the water in the tank (due to the dump load circuit) to the same temperature the engine coolant system is capable of heating it (about 85 degrees C)
@MispronouncedAdventures Жыл бұрын
Sounds a bit like you are after something like the Surecal calorifiers. Using the engine coolant for heating water. Opposed to using a copper pipe wrapped around the steel tank. It might be more efficient to use a plated heat exchanger as they have an extremely high rate of exchange between your safe, drinking water and coolant heater by the engine.
@koningbolo4700 Жыл бұрын
@@MispronouncedAdventures The hotwater tanks in a central heating boiler unit is basically a calorifier. Calorifiers are expensive but the hot water tanks (10L or some are about 15 L) are very cheap and made of copper or steel. Obviously the tanks are not meant for use in a vehicle but I will investigate and/or open up a steel example to see if I can stabilize the internal coil to make it usable in a bouncing around setup like a campervan. Even though I should be able to stabilize the coil and secure it so it does not develop internal leaks (where coolant can contaminate the drinking water in the coil) I will use a non toxic coolant in the system to prevent any health issues in the future. I first have to drill a 30mm hole in the steel tank to be able to weld in a G3/4 inch threaded insert so I can install a future electric heating element. This hole will also give me a visual access to the interior of the tank and if turns out (most likely it will) the coil is just hung from it's connections to the outside and not secured very well, I will cut open the tank by removing one of the end caps and do some stabilizing work (thick steel wires welded in place holding the internal coil in place so it will not move very much to prevent the coil from damage and leaks). Welding inserts in and welding back the end cap on a steel tank is no problem for me since I have a suitable welder and matching welding skills and experience to do so... I should be able to do the job of modifying the tank and internal coil in a single workday, which is fine. Buying a marine calorifier is way out of my budget and I am not very keen on getting one anyway since most manufacturers exclude warranty anyway because it will be used in a vehicle as opposed to a boat.
@koningbolo4700 Жыл бұрын
little update: turns out the tank I am planning to use as a calorifier is build with a double wall which means the hot coolant fills the tank and the space between the outer wall and the inner wall is filled with drinking water. This makes it useable in a vehicle since there is hardly any danger of mechanical stresses causing internal leaks and a risk of coolant contaminating the drinking water system. Today I welded in a G 1/2 inch threaded insert into the tank in preparation for the 300W (240V) dump load heating element. Next I have to order programmable a voltage sensitive relay and a programmable thermostat relay to make the tank function as a solar dump load...
@paulgeoghegan7565 2 жыл бұрын
Fantastic video...very informative. As always I find your videos set out the steps you have taken very clearly and concisely. Just one or two questions...am I right that the hot water tank you are using is plastic? I was searching for a suitable small metal cylinder to use as a tank, but the best I could think of was to adapt an expansion vessel (and remove the bladder). I had thought that 60'c might make a plastic tank a bit to flexible. I presume your plastic tank is holding up fine - and the connect for the element doesn't get too hot at its base?
@MispronouncedAdventures 2 жыл бұрын
The tanks are rated to 70 or 80°, The Bobil kit doesn’t recommend going over 65c I believe. That being said the tank is fully supported in a box. without the support it becomes malleable at higher temperatures I imagine with no support it made it a bit floppy. My initial worries was the sheets for the element at the mount point. It doesn’t get that hot. I imagine as a lot of the heat is dispensed into the water and the element itself is isolated via ceramic from the metal threaded body of the heating element
@paulgeoghegan7565 2 жыл бұрын
@@MispronouncedAdventures Cheers...I'll give it a go so. I was hoping for a hot water setup that would allow me to use 230v (when available) or 12v. Rather than using the batteries and then re-charging via 230v...I have a spare atx power supply that outputs 12v @ 27amps. Hoping that will allow me to run the immersion direct.
@MispronouncedAdventures 2 жыл бұрын
That should work out in the same heating element available in 230v and 12v, 24v and so on. There are a few different sizes of wattage elements as well if need be
@stevebrown6665 2 жыл бұрын
Do you think that voltage sensing relay would be a good way to prevent on over voltage error between my Renogy B2B/MPPT combined charger and my 200w solar panel? It is over by about 2 volts I would need a decent relay too
@baked.9nion Жыл бұрын
I use an 'intelligent charge relay' and its great for siphoning off excess volts... mines wired to a travel freezer on one set of panels n my second set to a 12v immersion
@forresteralex 3 жыл бұрын
At last somone has done it i been talking about this for ages how did you link up the load on victron couldnt see in the vid i have a similar mppt
@MispronouncedAdventures 3 жыл бұрын
Most version of the Victron mppts have a controllable load output some way or another. But it’s different between the 75, 100 & 150 models. Hopefully you’ll get it working for you. I think it’s well worth it
@bazailzb4737 3 жыл бұрын
Hiya im in Glasgow and have followed and got a lot of great ideas from your channel,its now time to fit my windows and I was going to do it myself but not its come to it I’ve gotten cold feet,can I please ask what was the name of the company that fitted your windows in East kilbride? Thanks for all your amazing tips and build Brian
@MispronouncedAdventures 3 жыл бұрын
Yeah. Glad you have found my channel helpful. The company is “Northview customs”
@damianclarke3519 Жыл бұрын
Nice, do you think you could use the load output to dump excess solar into a portable battery bank like the ecoflow delta or similar. It sounds like the mppt controller is a smart way to charge the battery bank without damaging the van batteries.
@MispronouncedAdventures Жыл бұрын
Yes. The “dump” can be anything. I personally use the EcoFlow powerbank and I also thought of this application. However I still might run if via relay. As the Dc input of a EcoFlow unit might be higher than the max output of a load output on a Mppt
@stevedon4257 10 ай бұрын
just a question so if I was wanting to heat water from a dump load of power I would connect the battery to a charge controller to the heating element?
@heroesandzeros7802 6 ай бұрын
I am not sure why they call this a dump. I call it a redirect. Charge controllers stop charging when the battery is full, but if the sun is still out, they can still produce power. If the charge controller does not use that power, the power is wasted. You can design a simple circuit to "Redirect" that wasted power to another load such as a water heater, air heater, fan, or to a separate Inverter. While the charge controller may turn off at 12V, another voltage switch may turn on a relay diverting that power.
@MispronouncedAdventures 6 ай бұрын
You can see it classed / name a dump or redirection in a lot of places. The idea of dumping excess energy, but it’s only a name. You can also redirect excess energy.
@christianwinkelmann8477 3 жыл бұрын
Super clever, thanks… I would like to use the bmv 712 , but my hot water heater is 230 v , is that possible with the inverter as well? Try to understand…
@MispronouncedAdventures 3 жыл бұрын
The bmw-712 relay you could yes the SOC alarm / trigger feature as the signal. I don’t see why a AC one can’t be used. You would just need to find some time of AC switch which van be triggered by a 12v dc signal
@evil17 Жыл бұрын
@@MispronouncedAdventuresthere are 12vdc - up to 240ac solid state type relays you can buy to control ac voltage from a dc source, I bought a number of these about 8 yrs ago for a mobile truck mounted seed grading machine I had built to control certain machine operations from inside the cab. I think they have a fairly wide operating dc & ac voltages you can control.
@jha5301 Жыл бұрын
for lead acid normal battery how much would you set it?
@TheHiveOffGride Жыл бұрын
dont suppose you would have a wiring diagram for how you wired the heat element to run the way it runs please. including the relays please.
@michaelb2388 Жыл бұрын
Am I correct in thinking you can only do this using a 12v (or DC) immersion direct from the controller? Or is the immersion wired into the 12v system?
@MispronouncedAdventures Жыл бұрын
The 12v dc immersion is wired too a large relay, which in turn is wired to the 12v systems. I’m using the controller/ temperature controlled relay to give a signal to the large relay to turn on. The element is too power to run direct from the controller
@terrynewey5313 2 жыл бұрын
Very interesting Alex but not a clue what you were on about apart from having hot water 🤔
@fergusmoloney 3 жыл бұрын
Alex is there any danger with this immersion setup if there is no water in the tank? How hot does the element get? I don’t have a recirculating system. I have a manual feed from the cold supply to fill the hot water tank which I refill after a shower (to avoid lowering the tank temperature during use). I currently just have the bobil system connected. I’m asking in case I was to forget to top off the hot tank after use. Thanks.
@fergusmoloney 3 жыл бұрын
I guess I could try and ensure the outflow from the tank is above the element to ensure it always remains submerged…
@MispronouncedAdventures 3 жыл бұрын
Good question, in the way I have set it up it would not be possible to drain the tank below the level of the element as the outflow pipes are above the height of the element. As for how hot does the Element get? I don’t know. but since the element is always in the water it doesn’t really matter in that sense as the water would stop the element from overheating because the heat energy from the element is going into the tanks . And the tanks water is controlled by the temperature relay which turns element off when it reaches my preset 60°. If the tank was empty and The element exposed you would have the issue of overheating and something would fail
@HorseboxCamper 3 жыл бұрын
Great stuff Alex, time to run some more cables I think! So that other dump load controller from Bimble allows you to mimic the relay on the BMV712 to say when voltage hits 13.6 v it would engage the relay and set off the heating element? Very cool. Is there a reason you set the temp to 60 degrees, is it to kill bacteria as this system is on constantly? Your Bobil is set lower isn’t it?
@pau1phi11ips 3 жыл бұрын
Keeping it on for a long time at 30-40 degrees would be pretty bad for nasties living/growing in the tank I think. 60 degrees kills pretty much everything you'll likely get in the tank.
@MispronouncedAdventures 3 жыл бұрын
My Bobil is also set to 60c. As the recirculating the shower requires a pre heat to 60° as the initial starting it flushes unheated water for the filters into the tank and drops system temperature very quickly to 40 where it stabilises. Byproduct is 60° is also a safe temperature to keep a hot tank at killing any potential nasties
@MispronouncedAdventures 3 жыл бұрын
If you’re using the BMV-712 I would actually use the SOC trigger over a voltage trigger. It would be a far more accurate way of doing it to not having to take into account voltage drop and increase from charging.
@selabucovetsky5691 Ай бұрын
Amazing! Where did you get the water temperature relay?
@MispronouncedAdventures Ай бұрын
Amazon, there’s quite a few models around.
@chriscameron5873 3 жыл бұрын
Sounds like free hot water! Great idea, so with my 160w panel and my Victron 75/15 MPPT I could do the same, using my output connections into a temperature relay using a smaller element? I dont have a shower, but it would be nice to have hot/warm water on tap for the pots or a face wash in the morning.
@MispronouncedAdventures 3 жыл бұрын
Yes. That should work with the 75/15 model. As you have the “Load terminals” from my understanding you can those on and off using “User def. algorithm” under load output in settings, same as I did to a degree. Which should work for you to use the load output as a signal / to turn on a for a temperature relay.
@MispronouncedAdventures 3 жыл бұрын
Wish a 160w of panel I would look at probably a 100w heat element
@chriscameron5873 3 жыл бұрын
@@MispronouncedAdventures Many thanks Alex, where did you buy your temp relay from?
@MispronouncedAdventures 3 жыл бұрын
Amazon or eBay “12v temperature relay” should bring up loads of models
@matthewnorris1005 3 жыл бұрын
Any recommendation for a decent 12v solenoid valve or ball valve? ...bough the cheep and cheerful and it leaks when closed.I saw you mentioned one in one of yours Vids. Cheers am
@MispronouncedAdventures 3 жыл бұрын
What your planned application? If it’s pressurised then a solenoid is a better bet ( filling the tank for example ) but if it’s for gravity fed ( draining the hot tank for example ) then you need a ball valve would be a better idea
@matthewnorris1005 3 жыл бұрын
@@MispronouncedAdventures it's for a pressure fed emptying of of my grey water tank, got a small pump 1/2'' connections
@alicurran1743 3 жыл бұрын
Clever idea! Early doors in my van but I reckon this could work for me too. Sitting from 9:00 with a full battery on a Sunny day always feels wasteful lol! 270w solar and 200aH lithium. 150w element feels about right?
@MispronouncedAdventures 3 жыл бұрын
Yeah that’s should like a good option for you. 150w heater or 300w ( which is just 150w x 2 in parallel, just split the parallel and use a single one )
@alicurran1743 3 жыл бұрын
@@MispronouncedAdventures great idea! I can’t see a UK stocked 150w anywhere. Bimble Solar have a 300w presume that’s the one you used? I’ll order one and see how fiddly it is to bypass the parallel. Well worth a try for £20!
@MispronouncedAdventures 3 жыл бұрын
Yes I used the 300w from Bimble. Really simple to split the parallel is actually just two bars which join the top it’s just unbolt them and take them off it’s designed to be done that way. If you have Instagram messenge me on there and I’ll send you a photo
@alicurran1743 3 жыл бұрын
@@MispronouncedAdventures Sounds easy, many thanks Alex, I’m Alijcurran on Instagram (I think..) I’ve just followed you.
@dellawrence4323 2 жыл бұрын
Sorry, I may be misunderstanding what you said, but what tells the element to turn off when the water is at 40c? Otherwise on a very sunny day would it not just keep getting hotter and hotter?
@MispronouncedAdventures 2 жыл бұрын
The temperature controlled relay. When the dump load turned on ( via the mppt built in relay), that powers the temperature controlled relay, that checks the water temperature and turned the element on or off
@johnhelbergreligionandarch3878 Жыл бұрын
Do you think i can do it with a wind turbine the dumb load idea.? Awesome
@MispronouncedAdventures Жыл бұрын
Yeah, you can do a dump loads with anything,
@johnhelbergreligionandarch3878 Жыл бұрын
@@MispronouncedAdventures Thank you buddy.
@AboveGroundLevel. Жыл бұрын
For the smaller Victron charge controllers with the +/- load output ; would the wiring from the load plug straight into a generic relay? As I see your charge controller has just a positive running in / out. Thanks
@MispronouncedAdventures Жыл бұрын
Yes, on the smaller units with a load output, you could use the load as your signal for the large relay / power on a temperature relay. And then have load output operation set in settings with a “user def algorithm”
@AboveGroundLevel. Жыл бұрын
@@MispronouncedAdventures Thank you for the speedy reply. Currently working on something similar for my van and working on the wiring now. Would you have a guess at the correct trigger settings for a 12v lead acid battery. (100 amp hrs). Thanks again.
@MispronouncedAdventures Жыл бұрын
For this it’s important to test yourself, voltage will be different on different systems. But a voltage just below your “bulk” charge voltage on your solar Mppt will be a good start.
@AboveGroundLevel. Жыл бұрын
Do you have a basic wiring diagram you could email me or offer any pointers. Be much appreciated and congratulations on reaching 11k subs - myself being happily one 👍 Many thanks.
@sun-sea-solar Жыл бұрын
Is it possible to do a solar dump with out a relay. Just using the streetlight function?
@MispronouncedAdventures Жыл бұрын
I don’t think so but I haven’t looked too deeply. Yes the “streetlight” function does work in conjunction with the load out, so it could be used to turn things on and off. I’m not sure it would worked as in settings for “streetlight” the triggers seem to be only based around sunrise and sunset times. Whilst dumpload you would ideally want the trigger to be battery SOC. but I guess you could make a hot water tank heat up pre sunrise or after sunset if you wanted
@sun-sea-solar Жыл бұрын
@@MispronouncedAdventures thank you 👍
@daveleeparry3603 Жыл бұрын
Is the heating element connected to the stock tank from bobil ? I am thinking of doing this , great idea , many thanks 😎❤️👍
@MispronouncedAdventures Жыл бұрын
Yes, it is attached to the generation one Bobilvans kit tank. I just drilled an extra hole and used a bulkhead fitting to bolt it on
@daveleeparry3603 Жыл бұрын
Many thanks ❤️😎👍
@Fattrucker Жыл бұрын
Hi Alex It's been a while since you fitted this system . Have you made any modifications to the system since ? I'm particularly interested to hear if you did upgrade to the 600w heating element ? And if you changed the way the system senses voltage ? I'm trying to get my head around this sort of system for my next build . You did an admirable job of explaining how to implemented it here for your needs and use case . Well done sir . Speak soon . Take care. Fattrucker
@MispronouncedAdventures Жыл бұрын
It’s great, I haven’t upgraded in the end, a lot of effort. I did saw the voltage sense to SOC with some Victron kit
@Fattrucker Жыл бұрын
@MispronouncedAdventures Thanks buddy . Catch ya soon . Fattrucker
@sexysean2444 Жыл бұрын
If you use busbars and run straight from pv this stops the batteries from cycling many times during heating. They can fully cycle upto one whole one per day lessening the life of your batteries. You would need a larger volt and amp relay to load. Take the voltage feed straight from batteries. This way bypasses the batteries and just uses pv.
@sexysean2444 Жыл бұрын
Take voltage feed from battery to voltage relay. From voltage relay to temp relay. From temp relay to dump relay. Dump relay is connected to busbars. Bypass batteries automatically.
@MispronouncedAdventures Жыл бұрын
I do understand what you are saying and the version you bring up is more of a true dump load using the directly PV. This version doesn’t really see a battery cycle. As it only comes on at the top of the charge. As far as the battery would know it’s just getting less solar Charging when the heating element comes on.
@acapulcogolovorez Ай бұрын
Please give us the wiring diagram of the solar dumping system! How to connect it?
@WizzRacing Жыл бұрын
People miss out on these functions. As once the batteries are full. You can still use the watts being produced...
@MispronouncedAdventures Жыл бұрын
Definitely! My case batteries are usually full by 11am in the morning in the summer. Might as well put the rest of the day to good use.
@firstclassmaleuk 3 жыл бұрын
I’ve been trying to get my head around doing this for a while now. I only have a PWM controller with the battery output only to batteries and load output going to what loads the van needs. So I want to take the excess without affecting the load. If I connected a second PWM to the load output of PWM, could I then power my priority loads from its battery out and anything left over go from PWM2 to the dump?
@opera5714 3 жыл бұрын
Yes it can. It does take some custom electronics. When the PWM is on charging, panel voltage drops to battery voltage. When off it jumps above power point voltage. A diode directs that to a storage capacitor. A circuit pulses the heater till that power drops below power point voltage. Are you in US?
@firstclassmaleuk 3 жыл бұрын
@@opera5714 extra electronics scares me a little. If Alex describes his set up as analogue, then I’m even more analogue. If I can connect a red and a black wire to a box that does it all, that’s my idea of advanced! I’m in the UK
@opera5714 3 жыл бұрын
@@firstclassmaleuk There is a lot to be said for the theory, if you can't buy it on amazon you don't need it. I'm pretty surprised China hasn't come out with these modules. I've talked about a board I made for years and I almost can't give it away. After 50 years in electronics I still hook things up backwards. Enjoy the road!
@MispronouncedAdventures 2 жыл бұрын
Cheers for the reply to this question guys I missed the original comment
@Simon_f32 Жыл бұрын
Which temperature controller did you use Alex? I can’t find one that states the probe is fully submersible and don’t fancy just chancing it.
@MispronouncedAdventures Жыл бұрын
I’m using a W3230 ( or a look alike copy of one. ) pretty cheap off Amazon and been working without issue for 2+ years now.
@Simon_f32 Жыл бұрын
@@MispronouncedAdventures awesome, thanks Alex. Have you just dropped it into the tank then or did you drill and seal it in?
@MispronouncedAdventures Жыл бұрын
As this is an pressurised tank, drilled a hole in the top, so I could run the temperature sensor through it, and then a bit of sealant to then seal the hole around the wire
@Simon_f32 Жыл бұрын
@@MispronouncedAdventures That’s another job added to the list then. Thanks again 👍🏼
@ervinstark1354 Жыл бұрын
Nice! Is it possible to do this with a Renogy MPPT too? Or just with Victron?
@MispronouncedAdventures Жыл бұрын
I don’t know if they’re Renogy units have a built-in relay. But if they don’t you can buy standalone “Solar dump relays” / “ voltage sensitive relays “ and use it to the same effect
@ervinstark1354 Жыл бұрын
@@MispronouncedAdventures thank you! Btw going to visit Nordkapp this december with our self built Transit, watched and learned a lot from you!:) So hope it will go OK ! Cheers!
@MispronouncedAdventures Жыл бұрын
I’m heading up there at the start of January. All the best
@ervinstark1354 Жыл бұрын
@@MispronouncedAdventures oo nice! We will spent our NYE there, lets grab a beer :)
@timbirkenbach5092 11 ай бұрын
Hey man, your videos are incredible, have watched several multiple times! There is some questions I have tho. First one would be.. Do you have a relay preventing the continuous switching on and off of the relay if you're just on the verge of having enough solar? Also, what pressure are you running in your water system and ist it a good pressure for a shower. Reason for the question is that John guest for example has a much lower pressure on warm water pipes and I was thinking if I should use shark bite instead?! Your hot water tank is not pressurized.. Would you do it again, or considering a pressurized tank to save a pump? Thanks again for the great effort with your videos. If you're feeling like some warm weather and some sun, come for a visit to Australia
@MispronouncedAdventures 11 ай бұрын
Thanks for watching. Your first question. The trigger has a on voltage value and a different off voltage value My system run of a 45psi pump. Which is well within the JG operating specifications. I would use 15mm JG fittings again shark bite isn’t a option in the UK. My hot tank is unpressurised as that was the nature of the kit at the time. I like it being unpressurised because I use it as the recirculating shower tank and serviceability for cleaning is important. If I didn’t have the recirculating shower I would use a pressurised, so I have one less pump. Not yet been to Australia, I would like to visit at some point!
@timbirkenbach5092 11 ай бұрын
Thanks soooo much for the recommendation this answers some long contemplated questions. If you wouldn't mind,.. one more.. A lot of people talking about the filters of the recirc shower and that they glogg up quick and that you can only use them without shower gel. What is your experience? So your hot water tank is also your shower grey tank? Have you considered using the coolant as heat transfer medium as well?
@MispronouncedAdventures 11 ай бұрын
I spent quite a time varying different types of shower gel/shampoo, I found shower gels, get screened out less because they’re dissolved in the water more so the filters last longer, but the water needs to be replaced quicker. Natural soaps or ones with more natural oils. Get removed by the filters easier but clog filter them up quicker. Next van, I would look at a hydronic or heating system, which uses coolant from the engine
@timbirkenbach5092 11 ай бұрын
Thanks again for your great help! Looking forward to your next video!!
@djunknown... Жыл бұрын
This is what I have been trying to do for a year I live on a narrowboat I have a 1600w victron inverter and 1kw of solar and a calorifer that is heated by engine only I know I can put a 300w 12v element in I just don't know where to go from there for the dump I understand the 200 relay to up the resistance what is the grey panel the 3 you have? And are you triggering it off the victron relay that tells a generator to kick In in voltage is low ? Thanks T .
@MispronouncedAdventures Жыл бұрын
Originally it was more dump, and I used Voltage as a trigger. But yes, I’m using reverse logic on the generator on / off triggered SOC now
@djunknown... Жыл бұрын
@MispronouncedAdventures so what's the grey pannle in the cupboard that was flickering when you were filming it sorry just trying to explain what,I saw
@MispronouncedAdventures Жыл бұрын
The one with the red and blue numbers on? That a temperature controlled relay. When the dump load is “on” that powers the temp relay, which checks tank is below my preset max temperatures ( 80c ), if blow the temperature relay triggers the big 200a relay which runs the element
@djunknown... Жыл бұрын
@MispronouncedAdventures yes where do I get that from maybe a link to buy that is the only thing I'm missing
@MispronouncedAdventures Жыл бұрын
Amazon has many different models under the name “temperature relay 12v” mine is a “W3230” type one
@DaveWatts_ejectamenta 10 ай бұрын
18 litres of water is barely enough to have a 5 minute shower in the morning, and the flow rate must be quite slow. Still, better than nothing! But you would be better to replace some of the PV with solar water panels since they are about 4 times more efficient than PV panels.
@MispronouncedAdventures 10 ай бұрын
I have a recirculating shower. so high pressure and high flow rate. in the context of an individual shower it’s “infinite water” as it’s a closed looping system
@patrickconrad396 Жыл бұрын
I'm trying to build a recirculating shower and want to wrap piping close around the heating element hoping it heats the pipe for when the shower drain runs through it. Anyone think this is a safe idea and will it work at all?
@MispronouncedAdventures Жыл бұрын
It’s can be done. There is 12v heating wire which I’ve seen wrapped around pipes. But I’d want to switch to a metal / copper pipe over a plastic one. My worries there water would be moving so fast in the pipe there wouldn’t be much energy transfer
@patrickconrad396 Жыл бұрын
@@MispronouncedAdventures thanks for replying so fast! Yea I was thinking metal but wasn't sure how much heat it would be. But I'm also not sure how much heat is lost either since it recirculates. I'll probably have to run tests first. But just trying to maximize the time with as minimal footprint as possible.
@AboveGroundLevel. 2 жыл бұрын
Hi. Great build content. I am thinking of doing something similar. Would a 275w panel be sufficient enough powering a 300w 12v water element like the one you use on your set up? I understand it's 25w short of the 300w element so may take longer to reach temperature but wouldn't have the worry of burning out the element anytime soon. It would be immersed in tank controlled with relay / thermostat running off the dump load of the charge controller. I understand you mention perhaps going for a smaller element such as 150w but seeing as I already had a 300w 12v element knocking about from a old project I thought why not upcycle it to a new purpose for heating water when solar dump occurs. ATB
@MispronouncedAdventures 2 жыл бұрын
It could well work, The main reason I mention a smaller element for a small amount of solar is when a lot of the time you’re not running at 100% solar output. But if you’re prepared for the solar dump is probably going to use some battery as well. It was just me and you reach your solar dump cut-off voltage quicker. But go for it specially if you already got one lying around
@AboveGroundLevel. 2 жыл бұрын
@@MispronouncedAdventures many thanks for the comment. I will look to fit it in the coming weeks and monitor the battery output when the solar dump takes effect. I will potentially switch to 150w if the fluctuations between float / dump are to great for the element to work effectively heating water. Keep up the great content 👍 ATB
@MispronouncedAdventures 2 жыл бұрын
@@AboveGroundLevel. What type of 300w element have you got? As the one I use has the two bars which are 150W and just have two plates at the end which join them in parallel make it into 300w. you can remove the plates and just run a single part of it
@AboveGroundLevel. 2 жыл бұрын
@@MispronouncedAdventures yes that's bang on. Same element as your one (I remember correctly as it's sitting in the shed awaiting digging out) so yes that would be ideal way of dropping the draw 🙂
@MispronouncedAdventures 2 жыл бұрын
Fantastic easy way for you to test!
@SignatureEdits 2 жыл бұрын
This is the version of this with the raspberry pi you mentioned! kzfaq.info/get/bejne/ldtgiLWm2LLcnp8.html (around the 22:30 mark)
@MispronouncedAdventures 2 жыл бұрын
Yes I originally learned about the whole concept from the fantastic videos everlander makes. His videos are amazing
@trevortrevortsr2 4 ай бұрын
There is a guy on the canals who has a similar system
@MispronouncedAdventures 4 ай бұрын
Yes, solar dump Loads are more popular in quite a few different areas.
@TheHiveOffGride Жыл бұрын
Hi, ive have tride messaging you several time but no answer, i want to do with the heating element like how you have done it, could you please explain how you fitted it and how you did the setting for it on the victron please. if anyone else has done this i would like to know, thank you in advance.
@MispronouncedAdventures Жыл бұрын
Heating element is fitted by drilling a hole in the water tank and then using a bulkhead fitting to screw the heating electric in via the threads on it. Electronically originally are used voltage sensing. On an off point. Later on I switched use a SOC value to trigger a relay as a signals, which, in turn turns on a temperature sensitive relay, to check tank temperature, which triggers a high amp relay, which turns on the element
@TheHiveOffGride Жыл бұрын
@@MispronouncedAdventures thank you for the reply, i love your videos. it took me a while to fully understand how you did the shower with the two tanks lol, ive just brought a horse lorry that im going to be converting. what was the cost of all the victron stuff btw.
@MispronouncedAdventures Жыл бұрын
Realistically the shower system only uses one tank, the shower tank. The smaller one is more just a way of collecting all the drain pipes together in one spot. Victron kit is pretty expensive, but you get what you pay for, I don’t know a full cost up off the top of my head but plenty of site offer it
@TheHiveOffGride Жыл бұрын
@@MispronouncedAdventures so i dont have to have two tank, ok, however i do like the way that you set it up and if its ok id want to set it up like yourself. Thanks again sir and thank you for all your help.
@chrisb5839 6 ай бұрын
Just watched this video again and wanted to run an idea past you to see if it would work.. To prevent the system drawing any battery power, would it work with a dedictaed panel (say 100w) which is solely used to heat water? Lets say you had the 100w panel with a 12v regulator to give a constant 12v supply to the temperature relay, which is then connected to a 12v heating element inside a small insulated tank. Would it then just heat the water anytime there is sun on the panel within the temperature ranges set on the relay? 🤔 This could then be a standalone system you could leave running without it draining any battery power. The only downside is that it wouldnt heat overnight, or when there is not enough sun, so the temperature inside the tank would fall much lower then yours. I'm thinking on a small scale, (lets say to heat water for a small kitchen sink rather than a shower) in a small campervan. Would this be viable? Would you still need a pwm or mmpt controller between the panel and voltage regulator? Intruiged to hear your thoughts! 🙂
@MispronouncedAdventures 6 ай бұрын
With a dedicated panels you have just feed direct PV from the panel into the right element, many dump loads are done like that. The 12V regulator would also work.
@chrisb5839 6 ай бұрын
@@MispronouncedAdventures in your video you stated the element draws 300w regardless. How would it work directly connected to the PV, would it just not turn on until enough wattage was coming through?
@thenoworriesnomad 2 жыл бұрын
What size is the table top on the Lagun mount?
@MispronouncedAdventures 2 жыл бұрын
67cm x 34cm
@thenoworriesnomad 2 жыл бұрын
@@MispronouncedAdventures Do you find it an ok size?
@MispronouncedAdventures 2 жыл бұрын
For me by myself yes. plenty of space to eat food or have the laptop on with external hard drives plugged in and drinks on
@thenoworriesnomad 2 жыл бұрын
@@MispronouncedAdventures perfect
@David_11111 3 жыл бұрын
where you been lol !
@MispronouncedAdventures 3 жыл бұрын
Very busy working for Bobilvans down near Bristol. Had almost no time to film, let alone edit video!
@David_11111 3 жыл бұрын
@@MispronouncedAdventures :) so I hear LOL
@stephenhill2009 3 жыл бұрын
Hi Alex , I am based in the Republic of Ireland but I would like to buy some of the stuff on your Amazon shop however there is a duty / tax issue. Would you ship to an address in the North of Ireland ( technically still in the UK ) where a friend lives and I can collect from there. Thank you. Stephen Hill.
@pau1phi11ips 3 жыл бұрын
The Amazon shop is just a bunch of links he gets royalties on if you buy from them to help him out. He doesn't have an actual shop with stock ;)
@fergusmoloney 3 жыл бұрын
They are just affiliate links. Just buy the same products on Amazon.de so you don’t have to worry about taxes and charges. I can’t understand why Irish people are still looking on Amazon.co.uk.
@karlsanderson8127 3 жыл бұрын
So is this now registered as a campervan or a van with windows because i know dvla are being dicks with diy conversion
@MispronouncedAdventures 3 жыл бұрын
Nope this isn’t registered with the DVLA. Unlikely to get it past and to be honest it makes no difference. My insurance company insure it as a conversion regardless of what the V5 says under body type. The increase speed limit which people believe they get change it to a campervan under the DVLA also don’t apply here as well
@ulf5738 Жыл бұрын
The water should be at least 65 degrees to kill of the nasty stuff. 60 is a bit to low for legionella bacteria. 70 is a guaranteed kill for that bacteria.
@MispronouncedAdventures Жыл бұрын
Higher the better yes. But some recommendations even only holding above 50c
@itsnotlevel2 Жыл бұрын
Bruh... How in the F do you get 590 watts out of 500 watts of panels....?? 🤔
@MispronouncedAdventures Жыл бұрын
Solar panels ratings are a ideal conditions rating not a max output rating
@itsnotlevel2 Жыл бұрын
@@MispronouncedAdventures That's not how that works there's something else you're leaving out..... I'm not arguing with you I'm just trying to figure out if there's a way you boosted your output.
@itsnotlevel2 Жыл бұрын
@@MispronouncedAdventures what was the outside temp and where was the sun on days you exceeded your rating..... Does that happen every day?
@MispronouncedAdventures Жыл бұрын
Nope, that’s how its work. The rated “wattage” of many solar panels is not its absolute max. Solar panels rating are based on a standardise testing criteria. But real world can most of the time you hit lower than the rated, but you can his higher. Example, solar panel output is massively related to efficiency, which is related to temperature. Low temperature can increase efficiency
@MispronouncedAdventures Жыл бұрын
Not sure the temperature that does, panels can also be cooled via driving and the wind over the top. Most clear summer days I’ll see 510-520w. My max ever has been 624w
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