The Eco-Advantages of Geothermal Heat Pumps
As with other methods, geothermal systems use heating pipes that induce heat or move heat to the machine from ground. The heat could be removed from any source like water or soil. However, source or temperature enables extraction of warmth. Much more energy is required to extract heat from the atmosphere when compared with the ground systems. Geothermal energy has advantages compared to other renewable resources like wind, solar or biomass as it is an exceptionally constant supply of heat, which means that it is not dependent on wind nor sun and so available all year.
Underground temperatures don’t change too dramatically, as a result of the earth’s elements although outdoor temperatures fluctuate with the changing seasons. Four to six feet below ground, temperatures remain relatively steady. A geothermal system, that normally is composed of an indoor managing unit and a buried system of pipes, known as a ground loop, and/or a pump to reinjection well, capitalizes on these continuous temperatures to provide “spare” energy. These ground heat pumps have 400 times greater efficiency than AC and 200 times that of a heating furnace.
The pipes that make up an earth loop are usually made from polyethylene and may be buried beneath the ground vertically or horizontally, depending on the site’s features. When an aquifer can be obtained, engineers may prefer to design an “open loop” method, in which a well is drilled into the underground water. Water is pumped up, run beyond a heat exchanger, then the water is returned to the same aquifer, through “reinjection.”
When installed properly, which can be critical, the loop that is buried may last for generations. Pump, and also the unit’s fan, compressor have been placed inside, protected from the weather conditions, so they tend to last for many years. Normally, filter changes and periodic checks and coil cleaning would be all the required maintenance.
HVAC systems remove four times more kilowatt-hours of use from the grid per dollar spent on ground source heat pumps. Geothermal heat pump is most the most effective method to reduce effects on the environment of conditioning spaces, although those other renewable technologies can play an important role.