Flowing With The Tide

Ground source heat pumps provide a somewhat inexpensive and eco friendly way to use waste heat from the ground for heating and cooling both residential and business buildings. Initial set-up costs can be quite a lot higher than regular air-source systems, but geothermal heat pumps present significantly lower ownership costs over the long run. Ground source heat pumps (GSHPs) are solutions that work with the earth?s temperature to provide heating, cooling and hot water for commercial organisations and houses. The systems are designed to make use of the fact that temperatures stay at a near constant level of amongst 7 C and 21 C just a few feet under the ground, irrespective of geographic location or surface air temperatures. In the course of winter, the units essentially draw out heat from the ground and shift it to a commercial building or home, while in summer the systems extract heat from building interiors and transport it to the ground. Ground source heat pumps are electrically powered and are often referred to as geothermal heat pumps, or geo-exchange pumps, or just as earth-coupled heat pumps. A full-fledged GSHP device is made up of a heat pump, a ground loop system for taking in heat from the ground or rejecting it back to the earth, and air ducts or radiant floor systems for giving the hot or cold air. The ground loop system normally is composed of numerous loops of plastic tubing loaded with antifreeze liquid or water, hidden underground in horizontal or vertical fashion. During winter, the liquid in the loops accumulates heat from the earth and shoves it to the heat pump when a compressor lifts the temperature even more before circulating it through the building. The flow of the liquid inside the loops is reversed in the course of summer. This results in the warmer air being drawn out from the building and shifted to the ground while cooler liquid is distributed back to the heat pump and then all the way through the building. An open loop system functions in about the same style, but in this instance the liquid in the loops is usually ejected into the earth. Ground source heat pumps have been in use since the 1940s and are deemed a more environmentally-friendly and cost-efficient option to regular air-transfer based heating and cooling systems. Tests have proven that GSHP systems have heating efficiencies up to 70% higher than conventional systems and cooling efficiencies of nearly 40% more than air-conditioners. The primary cost of setting up a geothermal heat pump can be quite steep compared to conventional heating and cooling systems. Even so, over the long-term the pumps are less costly to own and to preserve. They also can deliver up to 50% savings on energy use. In most cases, a geothermal heat pump is fitted along with an air-source heat pump as a way to minimize initial installation costs. Discover more information and facts about Ground Source Heat Pumps

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