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You can do this without any electrical parts at all. Use a solar thermal tank and Thermosyphon flow from the solar thermal panels to the tank. The panel arrangement in B will tend give a lower higher temperature compared to A but more hot water... With thermosyphon flow all the pipe runs have to be sloping, up for hot and down for cold. I had a 1280 ...


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Photovoltaic plus tankless water heaters plus counterflow heat exchangers (there are youtube videos how to build inexpensive shower heat exchangers) would be also an option. Heat exchangers may cut the needed power by 25 to 45%. Rentability depends on the relation of the feed-in vs. feed-out tariff, and of course of the installation and procurement costs. ...


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I see 5 questions: 1) Solar hot water in the morning and on cloudy days. Your usage pattern is worst-case since maximum solar energy availability is soon after your usage. So you will need a storage tank that can keep the water hot until you need it. Lots of variables here so your best bet is to consult an insulated tank supplier in your area. As far as ...


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