Solar thermal power is simply the technique for capturing the sun's heat and use it to heat water. As the sun is the most abundant source of energy available to all of us on earth, it makes sense to use this energy to heat the water to our homes. Solar thermal systems are becoming increasing popular in comparison to other "green" solutions, because they are designed to capture the energy as heat. Solar PV uses the sun to generate electricity where as solar thermal uses the heat to heat water only.
What is needed? In order to use solar energy in this way, to have to heat water collectors, a storage tank, expansion tank, solar station with pump, controller, solar fluid, fittings and piping. The storage tank can be combined with existing heating systems and solar station includes the pump and valves needed to operate entire system.
How does it work? The sun heats the solar fluid that is in the solar collector on the roof. For a typical house, two or three panels are put on the roof. These are of glass, which can withstand all types of weather are made. The controller monitors the system temperature and detects when the heat transfer is hotter than the water in the hot water tank. The pump in the solar pump station heat transfer fluid from the collectors to the hot water tank. This heat transfer medium flows through a pipe, the inside of the hot water tank heating the water in the tank winding. Then this water can be used in the home. The solar fluid is then pumped back to the collector on the roof further heated by the sun again.
Is it possible to work in the winter? Because it takes to heat it up the same amount of energy or sun, to the water in the tank, what time of year it is less good when it so in the winter there is limited daylight available not work as well, but it will still give you savings on your winter heating bills. It will provide you with hot water for about 70-80% of the year. To get the best benefits your solar roof panels must be placed on a south facing roof with a 45 degree tilt toward the sun in an un-shady location.
You can also cool the solar to your home. You can use a solar thermal chimney, which is a device that simply pushes the heat out of the house during the summer. The chimney is to be heated during the day, and warm air inside will rise and find out which in turn will draw cooler air into the house.
Other benefits include the cost of installation. Solar thermal plants are much safer and easier to install than PV modules. This means that installation costs are much lower, and they could also be installed by a handyman....
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