Direct And Indirect Solar Water Heaters

They can reduce energy cost to some extent.

Direct and indirect solar water heaters.

Indirect systems water is heated directly into solar collectors and circulating in your home it is best suited for cold or freezing conditions where the absence of heat exchangers means that cold cold water cannot be heated effectively. Only rust can damage the metal. It doesn t use a heating solution and copper coils like the indirect. Direct solar water heating systems pass potable water through the thermal collector that eventually flows directly to the desired application the faucet the showerhead etc.

Direct or open loop systems in which potable water is heated directly in the collector. Indirect solar water heating systems circulate a fluid typically a mixture of water and glycol in a circuit between the rooftop thermal collector and a heat exchanger that actually warms the potable water. Two types of solar water heating systems are available. Lastly we have the guardian dhw direct solar water heater which is the most straightforward and simple solar water heater available.

Before you get a product check the power consumption capacity. They produce indirect water heaters which consume less power. Active solar heaters are primarily of three types direct indirect and drain. But some of the manufacturers take care of the issue.

Indirect solar water drainback systems are also a indirect design that use a heat exchanger to separate the collector loop from the potable water. Instead of relying on glycol for freeze protection this system allows all the water in the array to drain back from the array and into a storage vessel in the solar loop when the pump is turned off.