Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Heat exchanger: solar/store?

April 26, 2017exchanger heat solar store

0

Posted

Heat exchanger: solar/store?

1 Answer

0

Posted

• Solar water store stratification – excellent • Solar absorber coating – matt black (to allow LW IR emission) • Solar water overheat control – heat export (pump on) if store >65C • Solar plumbing pressures always low. Open vented. Back to the top What are these new solar panels made of? The main metal in the solar panels is hydro-electrically made aluminium, with a lower environmental impact than aluminium made using fossil fuel. For durability, external screws / bolts are stainless steel. The absorber coatings are matt black. Double glazing is UV-stable polycarbonate. Double, rather than single glazing optimises winter performance. Insulation is zero-ODP pentane-blown rigid foam. Back to the top The solar pump specification? The 11 volt (peak) photovoltaic panel powers a self-regulating, variable speed, long life brushless DC motor. This drives Solartwin’s positive displacement pump. Valves in it stop “reverse thermosyphon” at night, and a bypass valve protects against “frozen by day