24 June 2014
In this paper, the authors introduce the optimum operation method of the hybrid GSHP system by using a performance prediction tool for the GSHP system and an example
of operation improvement of the hybrid GSHP system with the cooling tower installed in the office building in Kitakyushu City. The result of analysis of the hybrid GSHP system showed
that the measured heating and cooling loads were smaller than the ones calculated before the construction. Also, the measured heating and cooling COPs were smaller than the ones calculated by the simulation model. The optimum operation method for the hybrid GSHP
system was calculated by using the performance prediction tool. The results show that the maximum T1in is less than 26 oC and it is better to reduce the operation of cooling tower.
Therefore, the cooling tower in the hybrid GSHP system has been not operated.