One of the biggest uses of electricity, gas and oil is the heating of water in the home, and in offices, schools and hospitals etc. Solar water heating is a very simple and efficient way to grab energy from the sun and use it. Solar water heaters concentrate diffused solar radiation into thermal energy.
With the price of electricity rising at extraordinary pace the need of solar water heating is greater it is becoming a standard installation in new housing development projects. A good system can lower power bills up to 50%.
Solar water heating also decreases the carbon dioxide (CO2) emissions; a standard household will produce an average of 8 Tons of carbon dioxide per year if powered by standard electric water heater.

Advantages of Solar Water Heating
Conventional Water Heaters Use Energy
According to mechanical engineers at the University of Wisconsin’s Solar Energy Laboratory, an average four-person household with an electric water heater needs about 6,400 kilowatt hours of electricity per year to heat their water. Assuming the electricity is generated by a typical power plant with an efficiency of around 30 percent, it means that the average electric water heater is responsible for about eight tons of carbon dioxide (CO2) annually, which is almost double that emitted by a typical modern automobile.
The same family of four using either a natural gas or oil-fired water heater will contribute about two tons of CO2 emissions annually in heating their water.
Conventional Water Heaters Pollute
Surprising as it may seem, analysts believe that the annual total CO2 produced by residential water heaters throughout North America is roughly equal to that produced by all of the cars and light trucks driving around the continent.
Another way of looking at it is: If half of all households used solar water heaters, the reduction in CO2 emissions would be the same as doubling the fuel-efficiency of all cars.

 
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