Study on Engineering Design and Cost Performance of Borehole Heat Exchangers

Table 7

Operating cost of DFLBRMs system.

	Number	Electricity (gas); consumption	Running time	Energy consumption	Unit price	Operating cost per day	Operating cost per month	Operating months	Operating cost per year
		kW (m^3/h)	h	kW	¥	¥10^4	¥10^4		¥10^4
DFLBRMs	Cooling; 2	9.1	12	218.4	0.6	0.013104	0.39312	3	1.17936
	Heating; 2	9.1	12	218.4	0.6	0.013104	0.39312	4	1.57248
Cooling tower	2	25	12	600	0.6	0.036	1.08	3	3.24
Cold water pump	2	37	12	888	0.6	0.05328	1.5984	3	4.7952
Cooling water pump	2	37	12	888	0.6	0.05328	1.5984	7	11.1888
Gas cooling		267	12		2.2	0.70488	21.1464	3	63.4392
Heating		288	12		2.2	0.76032	22.8096	4	91.2384
Total									176.6534