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When will Solar Air Conditioning Have an Impact in Your House?

Using solar heat to cool a house could appear like a contradictory enterprise but nevertheless has various achievable makes use of in today's houses, most notably those situated in arid climates such as deserts.
There are each active (employing fans, pumps, or blowers) and passive employments for solar AC. Other inclusions in this category are solar powered ventilation and swamp coolers making use of solar electric energy.

ACTIVE
Solar absorption coolers use solar thermal collectors to absorb solar heat, which in turn separates a mixture containing absorbent and refrigerant fluids. As soon as separated, the refrigerant is condensed and evaporated to cool air which is then sent into the home. The refrigerant is reabsorbed and the cycle repeats. High temperatures are required to run absorption methods, which dictate the sort of solar thermal collector needed -- generally evacuated tube and concentrating collectors.

This cooled air is then sent through fans into the residence to supplement cooling loads. The desiccants are then re-dried utilizing solar heat and the method is repeated. Desiccant systems are ready to function at lower temperature levels than their absorptive counterparts.

Evaporative coolers or swamp coolers are not a new technologies. They have extended been applied to cool properties in hot and dry regions like the desert Southwest and the Middle East. Place simply, they pump warm air through moist pads, causing the water to evaporate and effectively cooling the air that passes through. Swamp coolers are not rather as helpful as conventional air conditioners, specifically in humid climates, but use much less electrical energy to run. That fact has made them a prime candidate for solar electric power, which can be employed to run the motors and fans involved.

Passive solar air conditioning is constructed into the design of the dwelling. Most generally this comes in the form of a solar cooling tower, or solar chimney. On the south face of the home you have a solar chimney, which is glazed on its south side to absorb solar radiation. This chimney will be connected to the interior of the home by way of a vent at a high point on the interior wall. The heat produced in the solar chimney, which naturally desires to rise upward, creates an updraft which draws air out of the house.

On the other finish of the residence will be a vent at a low point, typically connected to a substantial pipe that runs underground (about 6-12 feet deep) away from the house where it returns to the surface. Air is drawn into the pipe (by way of the updraft developed by the solar chimney) and is cooled by the relatively constant and cool underground temperatures before it is sucked into the home, cooling the ambient air inside.

SOLAR VENTILATION
Whilst not technically a solar air conditioning application, solar powered attic and gable vents can have a considerable impact on a home's cooling requirements. With out the want of wiring or drawing of grid electrical energy, solar vents assist maintain air flow all through the attic, stopping the trapping of warm air and thus growing air flow all through the household, as nicely as helping to extend the life of the constructing and roof.

THE Cost BARRIER
The biggest barrier, particularly to active solar cooling systems, is up-front costs. Consequently they have largely been relegated to big commercial applications simply because they can make the most difference on a significant scale. Still, as technologies and innovation improves across the solar business, expect it to have some notable and positive effect on Denver air conditioning as nicely.

About the Author

I work in LA for a marketing/pr firm and live my life to help others.

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