The shallow ground, the upper ten feet of the Earth, maintains a nearly constant temperature among 50° and 60°F (10°-16°C). Like a cave, this ground temperature is warmer than the air above it in the winter and cooler than the air in the summer season. Geothermal heat pumps take benefit of this resource to heat and cool buildings.
There is a lot of heated debate over what climates are optimal for earth-coupled climate manage systems, but in researching our recent book Geothermal HVAC , we talked to folks with a lot of productive installations all more than the planet, from chilly Alaska to the scorched Southwest, and from tropical islands to the Middle East. A appropriately constructed geothermal method can readily offer 20 years of dependable heating and cooling, with minimal maintenance. You require only a little amount of electricity to run fans and controls, so you slash your carbon footprint.
The refrigerant gas, which includes energy gained from the earth loop, travels from the heat exchanger to the compressor. In the compressor, the refrigerant temperature rises to 160ºF. From the compressor, the superheated refrigerant travels to the air heat exchanger. Here, the heat pump’s blower circulates air across the air coil, rising the temperature of the air, which is blown by means of ductwork to heat the home. After refrigerant releases its heat energy to the air, it then flows to the earth loop heat exchanger to begin the cycle once again.
The International Ground Supply Heat Pump Association , based in Stillwater, Oklahoma, said geothermal is 50 percent to 70 percent much more effective for heating than other systems. The U.S. Department of Power says that a ground-supply heat pump uses 25 percent to 50 percent much less electricity than traditional heating and cooling systems.
This is part of the nature of the Solar CITIES ethos: when experimenting, try to make every thing modular and re-usable (re-purposable) so that if one particular thought fails the net loss is low. Because we are really poor relative to Western Requirements (yet relatively wealthy by the requirements of the Egyptain poor) we are learning to understand how these significantly less wealthy in this planet believe although getting the flexibility to do experimentation.