What is a solar thermal collector?
A solar thermal collector, often referred to simply as “a collector”, is a device designed to receive solar radiation and convert it into thermal (heat) energy used to heat water. Generally, a collector is composed of a sturdy frame, an absorber (heat absorbing panel with channels for the water or a heating fluid), glazing (protective sheet of glass or plastic) on the sun-facing side, and insulation on the back and sides. A typical domestic solar hot water system uses two 4′ x 8′ flat plate “collectors” which are installed on the rooftop of a home or business (but can be located on the ground if necessary).
