Whether you’re building a new house or considering a new heating and cooling system for your present one, consider the economical and environmental advantages of Geoexchange technology. It is the world’s most advanced, most cost-efficient heating, ventilating and air conditioning (HVAC) System for a new or existing home.
Geoexchange is an increasingly popular choice, especially for new home construction, but it’s as old as the earth itself. By tapping into the relatively constant temperature of the earth below the frost line, Geoexchange heats and cools your home at significant savings – 25% to 50% savings when compared with traditional systems.
Geoexchange technology also offers you greater levels of home comfort and control. A lot less maintenance, enhanced home value, and the endorsement of the US Department of Energy (DOE) and the Environmental Protection Agency (EPA).
Geothermal - The highest Efficiency Method of Heating and Cooling Your Home
Geothermal Heat Pump technology is based on the abundance of heat that is stored in the earth. The earth remains at a constant temperature year-round. This constant thermal source is extracted from the earth via indoor heat pump linked to an external heat exchanger that is buried in the ground. In the winter, the heat pump circulates water through a series of ground loops constantly heated by the earth's temperature, and the heat is then extracted as the water is passed through the evaporator of the heat pump. It is then compressed to a higher temperature and released into the structure. In the summer, the reverse process takes place; heat is pulled from the structure and returned to the water and ultimately back into the ground. There are two types of earth connections; the Closed Loop System, requiring excavating to bury a series of pipes in the ground or the Open Loop System, in which water is extracted from an existing source such as
a well or lake and then returned.
The American Geothermal System
Geothermal technology has many names, all of which are correct, only the process may have slight variants according to application. The Heat Pump Systems are sometimes referred to as; Ground Source, Water Source, Earth Coupled, Water to Water, and Water to Air. There are also Hybrid Systems that combine several of the technologies. The American Geothermal Systems is an Earth Coupled, self-contained packed unit that
is water-cooled and has a double- wall plate and frame heat exchanger.
In the Heating Mode
Winter Operation: The American Geothermal System utilizes the thermal properties of the water supply. The thermal source is transferred to the double-wall plate and frame heat exchanger, and is then carried to the coaxial heat exchanger that is located in the heat pump. The heat is then amplified and delivered throughout the building via the air distribution system.
In the Cooling Mode
Summer Operation: In warm weather the process is reversed. Heat inside the building is extracted by the heat pump. The heat is then transferred to the evaporative coil containing the cool refrigerant and is then delivered throughout the building as cool air.
Domestic Hot Water
An added benefit of using a geothermal heat pump is the ability to produce domestic hot water as a by-product. This is accomplished by connecting a second heat exchanger to a section of the hot refrigerant loop, then circulating water from the heat exchanger to the hot water unit and back to the heat exchanger (the hot water tank is then used as a reservoir). A heating element in the hot water tank is used to make up for the times of the year when air conditioning or heating is not required.