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Geothermal Energy
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A sustainable, renewable energy source.
Geothermal energy is one of the greenest ways to heat and cool your home. It is an all year solution because no matter what the temperature is outside, the temperature under ground remains pretty consistent year round. Geothermal energy systems have loops that are installed (see below) that take advantage of this free, renewable energy source.How does a geothermal heat pump work?
To explain this, it helps if you understand how a normal air conditioner operates. In the summer when your air conditioning kicks on, the air conditioner (or normal heat pump) compresses the refrigerant which extracts the heat energy. The chilled refrigerant is sent back inside to your indoor coil. Your furnance fan (or air handler) pulls air from your home and forces it through the chilled indoor coil which cools and dehumidifiers the air. The refrigerant absorbs the heat energy from your indoor air, and sends it outside to the outdoor coil, or air conditioner, where the refrigerant is compressed to release the heat into the air.When using a geothermal heat pump, the refrigerant is sent into the earth loop, and the earth absorbs the heat energy instead of the heat pump having to compress it like normal. The cooled refrigerant comes back from the earth loop to the indoor coil where the process is the same as above.
For heating, the process is reversed. Since the underground has heat energy even in the dead of winter, the refrigerant instead absorbs this heat energy and brings heated refrigerant back inside to the indoor coil where air is forced through to warm it.
*Geothermal earth loops can also provide heat for radiant systems and boilers.
All Climate Geothermal Installation Pics (click the images to view)
Geothermal Loop Types
As mentioned above, geothermal earth loops can be installed in different ways depending on
Horizontal Loops
When enough land surface is available, a horizontal loop is often an ideal choice for a new geothermal installation. Trenches are dug in lengths of 100-400 feet, and the pipes are then buried in the trenches.(Click the image to enlarge)
Vertical Loops
If land surface is not available for a horizontal loop installation, a vertical earth loop is another excellent choice. Small diameter holes are bored up to 400 feet deep into the earth for the vertical loops to reside in.(Click the image to enlarge)
Pond / Lake Loops
If your home as a pond or other large body of water, a pond or lake loop is an excellent and economical way to make use of geothermal. Coils of pipe are installed at the bottom of the body of water to take advantage of geothermal energy.(Click the image to enlarge)
Well Water / Open Loops
Another economical solution is a ground water or open loop installation. Well water is a direct way to tap into the earth's constant underground temperature. Remember, when the ground or water feels cool, there is heat energy that can be extracted.(Click the image to enlarge)
