wrote in message
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Doctor Drivel wrote:
wrote in message
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Also any solar generated heat can be used for CH too.

not really hot enough.

You are only guessing here.

no, as explained he

CH runs at close to flat panel
stagnation temp, making efficiency
close to zero.

The solar section is at the bottom
with the DHW top, CH middle and solar
bottom.


DHW is usually not as hot as CH, 65 versus anything upto 82, so an
unusual choice. Why choose to heat dhw to above its use temp, to extend heat
capacity?


It is clear you don't understand the principle of heat banks.thermal stores.
the DHW stored water is between 70-85C to instantly heat the incoming water.

No CH return to the solar section,
only the middle CH section.
Using a plate heat exchanger the
return from the DHW can be directly into
the bottom of the cylidner in the solar section.

return from DHW? whats that?
where does the plate exchanger
connect in your scheme (it has 4
connections)


It is clear you need to understand how they work. See
http://www.heatweb.com That gives good explanations. No se sens ein
continuing until you understand, you think about it and then form questions.