Solar Heaters - Economical and Environmentally Friendly Heating

Solar heaters are economical and environmentally friendly. Think about it - not electricity or propane needed, you basically don't pay for anything except the unit itself. But are there any disadvantages?

Solar heat travels to Earth through space via photons, or “packets” of energy. Our Earth’s atmosphere and clouds absorb much of this heat, and the energy varies with the time of day and the season. 1.4 kilowatts per square meter is considered to be the "solar constant" any substantial change in this wattage would alter or even end life on Earth.

There is no reason why solar energy should not be used instead of being wasted. Primarily, we can tap into solar power stored in water by directing the flowing water through turbines, thus creating hydroelectric power. Since plants are living solar heaters via the process of photosynthesis, we can use a plant’s stored solar energy through natural fuels such as wood, alcohol and methane.

The magic of solar heaters

To make solar energy work for us, we’ve devised two ways of capturing and using this source of power. “Flat plate collectors” and “concentrating collectors” need large surfaces exposed to the sun to create solar heaters of any purpose. For example, to use the sun’s energy to power a home solar heater for one day requires a collector surface as big as a two-car garage. And of course solar heaters work best in arias with a lot of sunlight.

Flat plate collectors are just that: flat, thin boxes with transparent covers that are mounted on rooftops facing the sun. To empower solar heaters, the sun’s heat absorbs into the plate and heats either air or water in tubes running within the collector. This type of solar heater is an excellent, predictable way of heating water or a structure, where collectors are concentrated in the roof.

Industrial solar heaters

For many industrial heat requirements, flat plate collectors aren’t sufficient. Concentrating collectors in large areas provide much more efficient solar heaters. These collectors actually move to follow the sun, unlike fixed flat plate collectors. They also power solar heaters by using curved mirrors with aluminum or silver reflecting surfaces that gather much more of the sun’s energy than flat plates.

The future of solar heaters is exciting indeed! As we grow more proficient in using the sun as an energy source, we could eliminate the need for gasoline-powered automobiles. We could also generate solar heaters on a large scale. Solar heaters have a great future - unlike all other energy sources, they don't do any harm to the environment. If solar heaters were used more widely, we would have much less pollution problems in the big cities.

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