power of the air-conditioning system(Fig. 10). (1)For the geother-
mally assisted heat exchanger:The building’s semiannual averaged
electricity expense was NT$1,559,559,where the air-conditioning
system contributed 30% of the expense,which was NT$467,868,and
the air-host contributed 60% of the expense of the air-conditioning
system, which was NT$280,720.(2)For the boiler air-conditioning
system:
The total electricity expense of the building: