DEVELOPMENT OF A SPIRAL TYPE HEAT EXCHANGER FOR GROUND SOURCE HEAT PUMP

Abstract

The spiral type heat exchanger using for ground source heat pump system is developed. The aim of the heat exchanger is to intensive heat exchange in the aquifer layer near the ground surface. It is often observed that the areas in which rich underground water exist, the flow rate of groundwater is relatively high in shallow underground. In order to use the flow to intensive heat exchange, length of the heat exchanger is planned between ten to twenty meters to insert the top aquifer from the surface. Performance of heat exchange is simulated in various flow rate and soil condition. Based on the simulation and construction cost study, cost effectiveness of the spiral type is made clear.