mtnDon Miller wrote:
As far as PV modules goes, you hit the nail on the head. Concentrators can overheat the modules and damage them. As it is PV module output falls as the temperature goes up. Using a concentrator could make that worse.
mtnDon Miller wrote: I believe that a tracker makes more sense, they have been proven to function well. A concentrator also would need tracking through the day to make it most effective. Even then with the way PV module prices have fallen a tracker is often more expensive than adding PV modules to the system.
Are there any temperature vs efficiency charts for PV's and are there PV's designed to be efficient at higher temperatures. The idea is to maximize energy capture by circulating a cooling fluid, water for example, that keeps the cells at or about optimum temperature but collects that otherwise wasted heat for CHP purposes. Even if somewhat more expensive the fewer cells needed reduce costs and you have the added benefit of heating your home in cold climates.
mtnDon Miller wrote: A concentrator also would need tracking through the day to make it most effective. Even then with the way PV module prices have fallen a tracker is often more expensive than adding PV modules to the system.
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