About Geothermal Heat Pump

The first question that comes to your mind is what the exact meaning of geothermal heat pump is. Geothermal heat pump or ground source heat pump is a central heating or cooling system that transfers heat to or from the ground. It uses the earth both during the summers and the winters. During the winters the earth is used as a heat source and as a heat sink during the summer months. The best thing about the geothermal heat pump is that they use the moderate temperatures of the ground and in the process reduce the operational costs of both the heating and the cooling systems.

In case of geothermal heat pumps pipes are buried inside the ground so that heat can be easily extracted. The heat then can be used to heat radiators, underfloor, warm air heating systems or even hot air that is required in your home. Generally, there are four basic types of geothermal heat pumps. They are the horizontal, vertical, closed loop system and the open loop option. However, the type that is suitable for a residential building or a commercial set up depends on factors like climate, soil condition, availability of land and the local installation cost. Besides, these four types there is also the hybrid option which uses several geothermal resources along with outdoor air. This kind is common in areas where the cooling need is significantly higher than the heating need.

However, some of the benefits of geothermal heat pumps are the following:

• It can easily lower your electricity bills in case you have removed the conventional electric heating

• It can also lower carbon emissions depending on the kind of fuel that is being used

• It can heat the home along with the water

• Geothermal heat pumps require very less maintenance

The three most integral parts of geothermal heat pumps include the ground heat exchange, the heat pump unit and the air delivery system or the duct work. The heat exchange of a geothermal heat pump is a system of pipes called loop which is buried in the shallow ground near the building and a fluid that contains water or a mixture of water and antifreeze circulates through the pipe to absorb or release heat to and from the ground as and when required.

While cooling ground source heat pumps work like refrigerators like it cools an already cold place by transferring the heat to a region which is relatively warmer like the room. During winters the heat pump removes heat from the heat exchange and pumps it into the indoor air delivery system. This is a process where actually the heat of the ground moves into the rooms thus making it warmer. While during summers the entire process gets reversed thus making the interior of the buildings relatively cooler.

Geothermal heat pumps use very less energy as they draw heat from the ground and do not have to create it artificially. Hence, these heat pumps not only conserve energy and money but also prevents air pollution to a large extent.

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