A STUDY ON THE EXERGY AND ENERGY ANALYSIS OF GEOTHERMAL HEAT PUMPS FOR HIGH-RISE OFFICE BUILDINGS
This paper analyzes an air-conditioning system of an existing project in Tianjin, China which uses geothermal and water loop heat pumps (GWLHP) in winter. The concept of exergy has been introduced to establish a universal efficiency evaluation standard for this kind of geothermal heat pump system. In this paper, the energy and exergy analysis of the GWLHP system in the whole winter were conducted together. We compared its primary energy consumption with other systems that using hot water from the city heating network. An exergy assessment and modeling of the geothermal heat pump system were studied as well. Basing on the analysis above, the exergy efficiency value of the GWLHP is 48.45％,and the geothermal heat pump system can save more energy enormously than normal heating system with heating network. This study also analyzed its economical and technical feasibilities by using geothermal heat as the sole heating source.
Shusen LIU Junjie LIU Neng ZHU
School of Environmental Science and Technology, Tianjin University, Tianjin, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）