냉각탑 병용 하이브리드 지열 히트펌프 시스템의 냉난방 성능

This paper presents the measurement and analysis results for the performance of ground source heat pump (GSHP) system using a cooling tower as a supplemental heat rejector. In order to demonstrate the performance of the hybrid approach, we installed the monitoring equipments including sensors for measuring temperature and power consumption, and measured operation parameters from February 1, 2014 to February 28, 2015. The results showed that the entering source temperature of brine returning from the ground heat exchanger was in a range of design target temperature. Leaving load temperatures to building showed an average value of 11.5℃ for cooling and 39.5℃ for heating, respectively. From the analysis, the daily performance factor (PF) of GSHP ranged from 3.8 to 6.8, while the daily PF of hybrid GSHP system varied from 3.0 to 3.4 over the measurement period.