How Geothermal Heating and Cooling Works

Basically, geothermal heating/cooling systems operates via sub-surface conductive heat transfer, using the naturally renewable temperature of the earth's crust as a heat source in the winter, and as a heat sink in the summer.

 

Cooling Mode Operation

In the cooling mode, the hot refrigerant (well over 100 degrees F) exiting ETA's compressor is sent directly into the approximate 50 to 60 degree F range deep earth, which now absorbs and takes the heat away. The cooled refrigerant fluid is then circulated through the air handler where it absorbs and removes unwanted heat from the interior air. The heated refrigerant travels to the ETA system's compressor unit where the process is repeated. Thus, in the cooling mode, the ground removes your heat for free.

 


Heating Mode Operation

In the heating mode, approximate 50 to 60 degree F range naturally occurring heat from deep within the earth travels to, and is absorbed by, a much colder refrigerant fluid that is circulated within the copper tubing inside a deep well/borehole. Such naturally occurring heat is transported by the refrigerant fluid to the system's compressor where the fluid is compressed, thereby raising its pressure and temperature, transforming the 55 degree F temperature into a temperature well over 100 degrees F. The hot refrigerant is then circulated through the finned tubing within an air handler, where the cold return interior air absorbs the heat. The heated air is supplied, via a fan, to the interior air space. With the heat now removed from the refrigerant fluid, it becomes very cold and is re-circulated into the ground to absorb more naturally occurring and renewable heat. Thus, the ground supplies your heat for free.

 

Hot Water Heating

Utilizing the ETA geothermal system's optional Hot Water Pre-Heater (HWPH), the system can also produce virtually free hot water. Capturing excess heat in the refrigerant, this module can typically provide about 50% of the total hot water needs for an average home or business. Additionally, the ETA system can be designed to solely provide heat for low-cost hot water generation for hot tubs, swimming pools, or for in-floor hydronic heating purposes.

ETA units can be specifically designed to solely heat water for residential, commercial, and industrial applications at a fraction of the cost of conventional methods.

 
Source: http://www.earthtoair.com/how-geothermal-heating-and-cooling-works.php

17 comments:

  1. Heating Indianapolis handles all geothermal process and all you need to do is just relax. They can install geothermal heaters and air conditioners perfectly.

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  2. One of the biggest and most obvious benefits of geothermal is that you can achieve significant savings on your electricity bills and on your bills for heating and cooling your home. Geothermal is far more energy efficient- some estimates suggest as much as 400 times more energy efficient than other heating and cooling systems. This can give you yet another source of money and energy savings, since hot water heaters are a major contributor to raising the monthly utility bill.

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  3. Hello there! This is a good read. I will be looking forward to visit your page again and for your other posts as well. Thank you for sharing your thoughts about geothermal heating in your area. I'm glad to stop by your site and know more about geothermal heating.
    Closed loop geothermal heat pumps circulate a carrier fluid (usually a water/antifreeze mix) through pipes buried in the ground. Single-home systems can be "vertical loop field" systems with bore holes 50–400 feet deep or, if adequate land is available for extensive trenches, a "horizontal loop field" is installed approximately six feet subsurface. As the fluid circulates underground it absorbs heat from the ground and, on its return, the now warmer fluid passes through the heat pump which uses electricity to extract the heat from the fluid. The re-chilled fluid is sent back into the ground thus continuing the cycle. The heat extracted and that generated by the heat pump appliance as a byproduct is used to heat the house. The addition of the ground heating loop in the energy equation means that more heat is generated than if electricity alone had been used directly for heating.
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  4. Heating and cooling with the geothermal way is a great and efficient way to save energy and money both on heating and cooling bills.

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