A Solar thermal controller can be seen as the brains of a solar water heating system. It controlles and regulates the transport of heat between the storage vessel (geyser) and the solar collector.

There are really only two basic types of solar pumps; positive displacement and centrifugal and these can both be subdivided into surface mount and submersible categories. Your water source will dictate whether you need to use a surface mount or submersible pump while your daily volume requirement and total dynamic head (TDH) will determine if you need a positive displacement pump or centrifugal pump.

The distilling of water by means of  a solar still is achieved by means of 2 very basic principles, evaporation and condensation. Impure water gets inserted into the solar still where it is evaporated by the sun. The pure water vapor then condensates, gets collected and are then ready for use.

The Difference between conventional and a solar hot water cylinders mostly lies with the amount of entry and exit points to and from the cylinders. Solar hot water cylinders should be very well insulated and be made from non-corrosive materials as they are commonly mounted outside.

 

At the heart of a solar thermal system is the solar collector. It absorbs solar radiation, converts it into heat, and transfers useful heat to the solar system. There are a number of different design concepts for collectors such as flat-plate collectors and evacuated-tube collectors.

One of the most cost-effective ways to include renewable technologies into a building is by incorporating solar water heating. A typical solar water-heating system reduces the need for conventional water heating by about two-thirds, minimizes the expense of electricity or fossil fuel and reduces environmental impact.