Parametric Study of the Ground-Air Heat Exchanger (GAHE): Effect of Burial Depth and Insulation Length

A parametric study of a ground-to-air heat exchanger (GAHE) using numerical models based on computational fluid dynamics with the finite volume method to evaluate thermal potential GAHE is presented. After validation code developed published experimental data, it proceeded geometric parameters define those that have greatest impact application GAHE. Climatological variables such as relative humidity, air flow velocity, and inlet temperature are analyzed, well increase in conductivity soil due its humidity content. In addition, optimal installation depth length insulation outlet pipe The results reveal there higher exchange for an burial 4 m 15 m, 30% moisture content heating 32% cooling, diameter 0.15 m. use insulating recommended only last 2