A geothermal cooling system may be defined as a process whereby the topmost layer (up to 10 feet) of the ground is used to control and regulate temperature. Geophysical research reveals that the topmost layer of earth retains a temperature between 50 to 61 degrees Fahrenheit. This temperature is exploited with the aid of a geothermal device, to extract heat energy and send the cool temperatures into a pre-determined warm area.
How Does Geothermal System Work?
A circulating type of pump is set up under the ground that extracts the cool stable temperature from the surface of the ground. Scientists say that the ground absorbs nearly 50 percent of the solar energy and maintains a steady temperature of 50 degrees. Loops of copper or polyethylene tubing are interred in the ground in any convenient position—either horizontal or vertical—and connected to this pump.
The tubing has a refrigerant (either water or more preferably an anti-freeze liquid) that is ejected through the pipe, bartering the warm energy in the building with the cooler energy in the ground. This method of direct exchange facilitates sustaining a stable cool temperature.
The components used for geothermal cooling are incredibly durable. The pump has a life span of nearly 25 years and the copper/polyethylene loop buried in the ground can last up to 50 years.
Two Types of Systems
Geothermal cooling used for creating the cooling process is of 2 types: water-to-air systems and water-to-water systems. Water-to-air system is a substitute for central air conditioning. This process uses a liquid coolant to shift the energy into the air which subsequently is blasted throughout a structure.
The water-to-water type makes use of a heavy quantum of liquid spread all over the building, keeping the area at a constant temperature. The water-to-water system has twin purposes as it is also capable of effective heating.
Advantages of Geothermal Cooling System
- Naturally renewable
- Environment-friendly as CO2 emissions are negligible
- Huge savings as initial costs are low
- Highly economical as both operational and maintenance costs are meager
- Extremely flexibility as the system can be simply fragmented or enlarged to suit changing requirements
- Absolutely safe as there will be no leakage of gas or any possibility of carbon monoxide poisoning.
- Significant reduction in bills when compared with traditional cooling systems
- Authorities confirm that once the system is put in place, it will last for more than 100 years.
- The user can save up to 70% of the standard cooling bill.
- There is zero carbon foot print as no fossil fuels will be burnt.
Simply stated, a geothermal cooling system is an alternate and energy-efficient way to cool any particular location. This system has several advantages over the conventional systems that are available in the market.
The enormous savings makes geothermal cooling the right choice for any location. The Geothermal technology has become hugely popular and is successfully functioning in more than 38 countries across the globe and it is reported that in USA alone, there are nearly one million installations.
To crown it all, the Environmental Protection Agency (EPA) deems geothermal cooling as an extremely energy-efficient and cost effective space conditioning system