NDLI: Experimental Study and Application Analysis on Ground-Water Source Heat Pump In North China

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Yu, Zhun Jing, Youyin Xie, Yingbai Zhang, Xutao
Copyright Year	2006
Abstract	To describe the economical performance and operational characteristic of ground-water source heat pump system (GWSHPS) in North China, GWSHPS was compared with traditional central air-conditioning system (TCACS) for their total investments based upon a GWSHPS demonstration project in Beijing (88000 m2 covered area, 4572 kW heat exchange amount). At the same period, an experimental system of GWSHPS in Hebei was investigated with its operational data such as coefficient of performance (COP). The results of the demonstration project showed that the total investment for GWSHPS was 15.2% lower than TCACS, while annual operating cost for GWSHPS was 42.2% lower than TCACS. The test data of the system in Hebei showed that heating coefficient of performance of the heat pump and primary energy ratio (PER) were raised while heating water temperature was decreased. The entering water temperature to the unit ranged from 13.1°C to 17.4°C, with an average value of 15 °C, the heating water temperature varied from 40°C to 50°C, with the standard work condition of 45°C. The COPHP was about 4.12 at the minimum of heating water temperature, while it was about 3.47 at the maximum of heating water temperature and fluctuated between these values in other temperature. The results of the present work implies that GWSHPS is favorable for North China. However, buildings in North China have high heat load in winter, consequently, GWSHPS designed upon heat load will cause a waste in summer, thus, the solar-assisted ground-water source heat pump system (SAGWSHPS) which combines heat pump with solar water heater can be suggested as the best solution in North China.
Sponsorship	Solar Energy Division
Starting Page	325
Ending Page	329
Page Count	5
File Format	PDF
ISBN	0791847454
DOI	10.1115/ISEC2006-99021
Volume Number	Solar Energy
Conference Proceedings	ASME 2006 International Solar Energy Conference
Language	English
Publisher Date	2006-07-08
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Air conditioning Water Heat Temperature Heat pumps Groundwater Heating China Solar energy Structures Water temperature Stress
Content Type	Text
Resource Type	Article

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