Using Geothermal Energy for cooling - Parametric study

Geothermal heat pump is an efficient application derived from geothermal energy. It exploits earth as a heat provenance to extract heat from it and heat space in winter, or it uses earth as heat sink to transform heat to it and cool the space during summer. This paper presents a parametric study to investigate the effects of inlet and outlet water temperatures and ground temperature on the length of the pipe of a horizontal geothermal heat pump system during cooling process. The type of the considered pipe is Poliplex - PE100 Series 1 polyethylene of 16 mm inner diameter and 20 mm outer diameter. The obtained results revealed that at 30 degrees C water inlet temperature, 27 degrees C water outlet temperature and 21 degrees C ground temperature the length of pipe needed is 716 m. Also, the results showed that higher water inlet temperature and ground temperature increases the required pipe length; however, higher water outlet temperature decreases the needed length of the pipe. (c) 2017The Authors. Published by Elsevier Ltd.