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Four basic types of geothermal energy sources |
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 Horizontal loops are often considered when adequate land surface is available. Pipes are placed in trenches, in lengths that range from 100 to 400 feet. More...
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 Vertical loops are the ideal choice when available land surface is limited. Drilling equipment is used to bore small-diameter holes from 75 to 300 feet deep. More...
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 Pond loops are very economical to install when a body of water is available, because excavation costs are virtually eliminated. Coils of pipe are simply placed on the bottom of the pond or lake.
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 Open
loop systems are the fourth type and utilize ground water as a direct energy source. In ideal conditions, an open loop application can be the most economical type of geothermal system.
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Four times the efficiency |
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A geothermal system uses the Earth's thermal properties in conjunction with electricity to provide unprecedented efficiency. For every unit of electricity the system uses, it provides four units of heating energy, giving a geothermal system a 400% efficiency rating on average. These numbers can translate into real savings on your utility bills year-round.
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Geothermal system unit in heating/cooling mode |
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| Heating Mode |
Cooling Mode |
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