Evaluation of heat exchange rate for different types of ground heat exchangers

Abstract

This paper presents experimental results on the evaluation of thermal performance of U, W, 2U and coil type ground heat exchangers (GHEs). These GHEs were installed partially saturated landfill ground which was composed of silt and clay in the runway area of Incheon International airport. Thermal performance tests (TPTs) were conducted for 100 hours under the continuous operation condition. Heat exchange rates of individual GHEs are evaluated from TPT results, and the optimized GHE was suggested based on the thermal performance and construction cost as well, especially in the vertical ground source heat pump system (GSHP). Copyright © 2013 by the International Society of Offshore and Polar Engineers (ISOPE).