Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
권호 표지

Optimum Pumping Rates of Ground-Water Heat Pump System Using Groundwater or Bank Infilterated Water

강변여과수와 천부 지하수를 이용하는 지하수 열펌프시스템의 적정유량

  • Published : 2007.12.28
Download PDF
⟨ Previous Next ⟩

Abstract

The groundwater heat pump system(GWHP) is one of the most efficient ground source heat pump system(GSHP) which uses low grade and shallow geothermal energy for cooling and heating purpose. The GWHP system shall be designed properly based on peak block load performance and optimum pumping rate of groundwater comparable to ground coupled heat pump system(GCHP). The optimum pumping rate depends on groundwater temperature at a specific site, size of plate heat exchanger, and total head loss occurred by whole system comprising pumps and pipings. The required optimum flow rates of the system per RT are ranged from 3.8 to 9.8lpm being less than the typical building loop flow of 9.5 to 11.4lpm.

지하수열펌프시스템(GWHP)은 지원열펌프시스템(GSHP)가운데 성능이 가장 우수하며 저온의 천부지하수열을 이용하는 시스템이다. GWHP시스템은 지중연결 열펌프시스템(GCHP)에 비해 최대 블록부하와 전 시스템 성능에 부합되는 지하수유량을 기준으로 하여 설계를 하며 최적 지하수유량은 해당지역의 지하수온도, 판형열교환기의 규격과 전체펌프와 배관류의 전 양정고에 따라 결정한다. 대체적으로 전형적인 빌딩루프순환수의 필요유량은 1RT당 $9.5{\sim}11.4lpm$ 정도인데 비해 GWHP시스템이 필요로 하는 최적 지하수유량은 이보다 꿜씬 적은 $3.8{\sim}9.5lpm$정도이다.

Keywords

References

  1. ED Lohrenz, Hahn Jeongsang, Han Hyok Sang, Hahn Chan and Kim Hyong Soo (2006) A Study on An Inte­grated GEO/TES with Geothermal Heat Exchanger and Thermal Ice Storage, Economic and Environ­mental Geology, v. 38, n. 6, p. 717-729
  2. Hahn Jeongsang, Jeon Jae Soo, Kim Hyong Soo (2006) Performance and Economic Evaluation Geothermal Heat Exchanger Using Bank Infilterated Groundwa­ter(lst Annual Report), KOWACO, p.74-84
  3. Hahn Jeongsang, Hahn Kyu Sang, Han Hyok Sang and Hahn Chan (2005) Geothermal Heat Pump System for Heating and Cooling, Hanrim Publisher (2nd edi­tion) p.6-5,9-22.10-6,11-26-27
  4. Hahn Jeongsang (1983) Introduction of Groundwater, Parkyong Publishing Co, p.279-293
  5. Hahn Jeongsang (2000) Groundwater Environment and Pollution, Parkyong Publishing Co, p.156-274
  6. Hahn Jeongsang (2005) The Concept and Current Tech­nical Level Geothermal heat Pump System, Korea Jour. of Geothermal Energy, v. 1, n. 1, p. 10-18
  7. Hahn ChanJeon Jae Soo, Han Hyok Sang,Yoon Woon Sang and Hahn Jeongsang (2007) Seasonal Variation of Entrance Water Temperature(EWT) and COP of Groundwater Heat Pump System Using Bank Infil­terated Water from Stream-Alluvial Aquifer, Korea Jour. of Geothermal Energy, v. 3, n. 2, p. 39-51
  8. Hahn Jeongsang, Han Hyok Sang, Hahn Chan, and Kim Hyong Soo (2007) Optimum Distance between Pump­ing and Injection Well of the Geothermal Heat Pump System, Korea Jour. of Geothermal Energy, v. 3, n, 2, p. 60-71
  9. Kavanaugh, S.P and Rafferty,K,1997, Ground-Source Heat Pump, Design of Geothermal Systems for Com­mercial and Institutional Buildings, ASHRAE, p.77-­78
  10. Korea Material Pricing Co.,Ltd (2005) Price List Republic of Korea, p.601-612
  11. MOCT, KOWACO (2006) Annual Report of Groundwater Investigation/Republic of Korea, http://gims.go.kr
  12. MOCT (2005) Revised groundwater Law-Article 30-3 and Presidential Decree 40-3, p.87 -88
  13. Rafferty, K. (2003) Well Pumping Issues of Commercial Ground Water Heat Pump System Geo-Heat Center, p.1-10