EXPERIMENTAL STUDY ON THE GROUND SOURCE HEAT PUMP SYSTEM WITH STEEL PIPE PILES

Abstract

 A series of the demonstration tests were conducted by synchronized operation between the ground source heat pump(GSHP) system and the air source heat pump(ASHP) system at the existing building to verify efficiency of the GSHP system using the steel pipe piles as the ground heat exchangers. The GSHP system achieved the energy conservation of 30-40% in the cooling period.
 However, it declined in the heating period because the temperature difference between the circulating water and the outer temperature was smaller than the cooling period. It was also confirmed that the ground temperature recovered in one year cycle.