Direct Circulation Solar Water Heater

Swhs are widely used for residential and some industrial applications.

Direct circulation solar water heater.

Whereas indirect systems rely on another liquid to transfer heat to the water used in the house direct systems heat the very water coming in from the cold water intake. Solar water heaters also called solar domestic hot water systems can be a cost effective way to generate hot water for your home. Two types of solar water heating systems are available. Direct circulation solar hot water systems are one of two types of active solar water heaters the other being indirect.

In this system potable water is drawn directly from the storage tank and circulated through the array to be heated and returned to a recirculation port in the tank. Of the two types of circulation systems for solar water heaters direct systems or active systems are easier to understand. A variety of configurations is available at varying cost to provide solutions in different climates and latitudes. The direct open loop solar water system freeze recirculation is both the simplest and most efficient type of solar heating system.

They have automatic controllers that sense when sunlight is available. They can be used in any climate and the fuel they use sunshine is free. Direct circulation systems pump household water through collectors which is then delivered to where needed in the house. 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.

These come in two forms. The system is essentially a closed loop that water flows through. The mechanicals for this type of system is almost identical to a boiler application except that the solar array is the heat source. On average if you install a solar water heater your water heating bills should drop 50 80.

Direct circulation water heaters generally work well in climates where they rarely freeze. From a tank the water flows up through solar collectors and back down to that tank once again and this is the water that you ll use for bathing or for heating your home. Indirect solar water drainback systems are also a indirect design that use a heat exchanger to separate the collector loop from the potable water. It is one category of active solar water heating systems in which pumps being used to circulate household water through the collectors and into the home.

However a solar water heater can usually save you money in the long run. Here are a few unique perks of home solar water heating products that may convince you to upgrade your home. Direct or open loop systems in which potable water is heated directly in the collector.