An Evaluation of Seasonal Performances Evaluation of a Vertical-type Geothermal System applied for R&D and Office Building
A geothermal heat pump system of 400RT cooling capacity has been measured and evaluated 3 times through a year. Followings are the results. The inlet temperature into the GHEX (Geothermal Heat EXchanger) is lower than outlet in winter, but in summer it reversed. Even the average heat conductivity is evaluated as 3.09W/m℃, because of the heat conductivity differences between borehole ＃2 and # 1 (#2 is higher than #1), the temperature differences between inlet and outlet of GHEX of heat pump zone #2 is measured higher than zone #1. The maximum temperature of the 1st winter was 15℃, but it was increased to 17.5℃ at next winter, one of the major reasons is assumed that the exhausted heat might be spread less effectively and accumulated into the ground during cooling operation in summer. The geothermal system COP was calculated as 4.3 at 1stwinter measurement, 3.8 at 2nd-summer, and 3.4 at 3rd-winter.
Geothermal Energy Geothermal System Geothermal Heat Exchange(GHEX) Season Performance Evaluation
Kwang-il Hwang Joong-hun Kim Seung-ho Shin
Dev. of Mechanical and Information Engineering, Korea Maritime Univ., Busan, Korea, 606-791 Sustainable Technology Research Team, Samsung Corporation, Seoui, Korea, 137-857
国际会议
The 6th International Symposium of Asia Institute of Urban Environment(亚洲城市环境学会第六届国际会议)
长春
英文
295-300
2009-09-20（万方平台首次上网日期，不代表论文的发表时间）