A heat pump uses natural energy from renewable sources such as air, ground or water. The pump, acquiring thermal the environment (75%) and using electricity (25%), supplies it to heated object. pump-based system consists of a source (heat is taken it), unit an upper transferred it). refrigerant transfers lower source. paper discusses types pumps in terms use technical economic analysis was carr...

Reductions in fossil fuel use and increases in system efficiency are required to make space heating more environmentally benign. Ground loop heat pumps offer an alternative heating solution that is more environmentally benign than conventional methods. Past studies of these heat pumps have usually focused on basic system arrangements, but new advanced systems are being developed. Here, energy a...

Energy crisis and environmental pollution have become major challenges in China’s economic development, which has triggered the demand for alternative energy sources and promoted the popularization of ground source heat pump technology. A ground source heat pump (GSHP) is a central heating and/or cooling system that transfers heat to or from the ground. It uses the earth as a heat source (in th...

The calculation of Ground Heat Exchanger (GHE) performance is very important for predicting the performance and estimating the initial cost of geothermal heat pump systems. In North America it is estimated that on average GHE are oversized by about 10% ~ 30%. A vertical Ground Heat Exchanger (VGHE) is most common because of its smaller environmental influence and land field requirement. This pa...