SET Proceedings

2978-4387

Caravel Press

10.65582/set.2008.249

2008.249

Heating performance of a ground source heat pump system installed in a school building

Koo

Kyoungmin

koo@pusan.ac.kr Hwang

Yujin

Jeong

Youngman

Lee

Jaekeun

jklee@pusan.ac.kr Kim

Inkyu

Lee

Yeongho

Lee

Donghyuk

School of Mechanical Engineering, Pusan National University, San 30, Jangjeon 2 Dong, Geumjeong Gu, Busan 609-735, Korea LG Electronics, 391-2 Gaeumjeong-dong, Changwon City, Gyeongnam, Korea

24082008

7 1 978-1-995850-08-5 1795 1802

24 August 2008

2008

This paper presents the heating performance of a water-to-refrigerant type ground source heat pump system (GSHP) installed in a school building. The evaluation of the heating performance has been conducted under the actual operating conditions of GSHP system in the winter. Ten units with the capacity of 10 HP each were installed in the building. Also, a closed vertical typed-ground heat exchanger with 24 boreholes of 175 m in depth was constructed for the GSHP system. For analyzing the heating performance of the GSHP system, we monitored various operating conditions, including the outdoor temperature, the ground temperature, and the water temperature of inlet and outlet of the ground heat exchanger. Simultaneously, the heating capacity and the input power were evaluated for determining the heating performance of the GSHP system. The average heating coefficient of performance (COP) of the heat pump was found to be 5.1 at partial load of 47%, while the overall system COP was found to be 4.2.

Ground source heat pump(GSHP) Water-to-refrigerant Heating performance Coefficient of performance(COP) Air source heat pump(ASHP)

24 to 27 August 2008

7th International Conference on Sustainable Energy Technologies

SET2008

Seoul, Korea

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