Sat, May 27, 2017
Text Size

Solar Hot Water

There are two types of solar water heating systems: active, which have circulating pumps and controls, and passive, which don't.

The typical solar water heater is comprised of solar collectors and a well-insulated storage tank.

The solar collector is a network of pipes that gathers the sun's energy, transforms its radiation into heat, and then transfers that heat to either water or a heat-transfer fluid.

The sun's heat is collected through one of three types of solar collectors: Flat-plate Collectors, Integral Collector-Storage Systems (ICS) or "batch systems, and the Evacuated-Tube Solar Collectors. These collectors either preheat water before it enters a storage tank, or, in the case of a heat-transfer fluid, the fluid acts as a heat exchanger and transfers the heat from the fluid to the potable water in the storage tank.

The final component of a solar water heating system is the mounting system. The three most common mounting types are the roof mount, ground mount, and attached or awning mount.

Solar Hot Water Basics

Additional information: