Free 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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