[논문]이중 열원 히트펌프 시스템의 난방 성능과 운전 특성

임효재; 손병후

doi:10.17664/ksgee.2021.17.2.030

이중 열원 히트펌프 시스템의 난방 성능과 운전 특성
Heating Performance of Heat Pump System Using Dual Heat Source and Its Operation Characteristics 원문보기

한국지열에너지학회논문집 = Transactions of the Korea Society of Geothermal Energy Engineers, v.17 no.2, 2021년, pp.30 - 41

임효재 (호서대학교 지열인력양성센터) , 손병후 (한국건설기술연구원 녹색건축연구센터)

Abstract ▼ AI-Helper

This paper presents the heating performance analysis results of a heat pump system using a dual heat source. In this paper, a dual heat source refers to the ground-coupled heat exchanger using both a surface water heat exchanger (SWHE) and a vertical ground heat exchanger (VGHE). In order to evaluate the system performance, we installed a monitoring system to measure the temperature and power consumption of a heat pump and then collected operation data with 4 different load burdened ratios of the dual heat source heat exchanger. During the whole measurement period, the average heating capacity of a water-to-water heat pump unit was 37.3 kW. In addition, the compressor of the heat pump consumed 9.4 kW of power, while the circulating pump of the dual heat source heat exchanger used 6.7 kW of power. Therefore the average heating coefficient of performance (COP) for the heat pump unit was 4.0, while the entire system including the circulating pump was 2.7. Finally, the parallel use of SWHE and VGHE was beneficial to the system performance; however, further researches are needed to optimize the design data for various load ratios of the dual heat source heat exchanger.

주제어

표/그림 (14)

그림 Fig. 1. Installed capacity and geothermal energy utilization trend of ground-source heat pump sector in Korea.
그림 Fig. 2. Main components of the experimental system including heat pump unit, shallow pond, and slinky coils.
표 Table 1. Operation modes of dual heat source heat exchanger and their capacity ratios of SWHE and VGHE
표 Table 2. Operation conditions with temperature ranges of hot water and EST_sw
그림 Fig. 3. Slinky coils for SWHE and schematic diagram for experimental heat pump system [18].
그림 Fig. 4. Daily average temperatures on source (EST) and load (LLT) sides of heat pump and pond water.
표 Table 3. Parameters and uncertainties
그림 Fig. 5. Daily average heating COP of heat pump unit and system over the entire measurement period.
그림 Fig. 6. Heating operation characteristics of a heat pump system on the coldest day during entire measurement period.
그림 Fig. 7. Temperature variations on source (EST) and load (LLT) sides with different operation conditions.
그림 Fig. 8. Capacity and flow rate variations with different operation conditions.
그림 Fig. 9. Representative operation modes for different operation conditions.
그림 Fig. 10. Heating COP of heat pump and system with different operation conditions.
그림 Fig. 11. Capacity, power consumption, and heating COP of heat pump with EST.

참고문헌 (21)

Cabeza, L., and Chafer, M., 2020, Technological options and strategies towards zero energy buildings contributing to climate change mitigation: A systematic review, Energy and Buildings, Vol. 219, pp. 1-46.
Kavanaugh, S. and Rafferty, K., 2014, Geothermal Heating and Cooling: Design of Ground-Source Heat Pump Systems, ASHRAE, Atlanta.
Javadi, H., Ajarostaghi, S., Rosen, M. A., and Pourfallah, M., 2019, Performance of ground heat exchangers: A comprehensive review of recent advances, Energy, Vol. 178, pp. 207-233.
Lund, J. W., and Toth, A. N., 2021, Direct utilization of geothermal energy 2020 worldwide review, Geothermics, Vol. 90, 101915.

상세보기
Korea Energy Agency, 2021, New & Renewable Energy Statistics 2020(2019 Edition), pp. 34-37.
Mitchell, M., and Spitler, J., 2014, Open-loop direct surface water cooling and surface water heat pump systems-A review, HVAC&R Research, Vol. 19, pp. 125-140.
Hattemer, B., and Kavanaugh, S., 2005, Design temperature data for surface water heating and cooling systems, ASHRAE Transactions, Vol. 111, pp. 695-701.

상세보기
Chiasson, A., Spitler, J., Rees, S., and Smith, M., 2000, A model for simulating the performance of shallow pond as a supplemental heat rejecter with closed-loop ground-source heat pump systems, ASHRAE Transactions, Vol. 106, pp. 107-121.
Do, S. L., and Haberl, J., 2016, Development and verification of a custom-built ground heat exchanger model for a case study building, Energy and Buildings, Vol. 119, pp. 242-255.
Lv, N., Zhang, Q., Chen, Z., and Wu, D., 2017, Simulation and analysis on the thermodynamic performance of surface water source heat pump system, Building Simulation, Vol. 10, pp. 65-73.
Zou, S., and Xie, X., 2017, Simplified model for coefficient of performance calculation of surface water source heat pump, Applied Thermal Engineering, Vol. 112, pp. 201-207.

상세보기
Chen, X., Zhang, G., Peng, J., Lin, X., and Liu, T., 2006, The performance of an open-loop lake water heat pump system in south China, Applied Thermal Engineering, Vol. 26, pp. 2255-2261.

상세보기
Schibuola, H. and Scarpa, M., 2016, Experimental analysis of the performances of a surface water source heat pump, Energy and Buildings, Vol. 113, pp. 182-188.

상세보기
Luo, J., Luo, Z., Xie, J., Xia, D., Huang, W., Shao, H., Xiang, W., and Rohn, J., 2018, Investigation of shallow geothermal potentials for different types of ground source heat pump systems (GSHP) of Wuhan city in China, Renewable Energy, Vol. 118, pp. 230-244.

상세보기
Sohn, B., 2016, Preliminary analysis on design parameters and application effects of surface water heat exchanger (SWHE), Transactions of the Korea Society of Geothermal Energy Engineers, Vol. 12, No. 3, pp. 24-32.
Lim, H. J., Kong, H. J., and Sohn, B. 2017, Cooling performance of geothermal heat pump using surface water heat exchanger, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 29, No. 6, pp. 316-326.
Sohn, B., 2018, Cooling performance analysis of ground-source heat pump (GSHP) system with hybrid ground heat exchanger (HGHE), Transactions of the Korea Society of Geothermal Energy Engineers, Vol. 14, No. 4, pp. 43-52.
Sohn, B., 2020, Heating performance analysis of ground-source heat pump (GSHP) system using hybrid ground heat exchanger (HGHE), Transactions of the Korea Society of Geothermal Energy Engineers, Vol. 16, No. 3, pp. 8-16.
DesignBuilder, 2019, DesignBuilder V6 Simulation Documentation, DesignBuilder Software Ltd.
Gaia Geothermal, 2017, Ground Loop Design (GLD) Manual, Gaia Geothermal.
Kline, S. J., 1985, The purpose of uncertainty analysis, J. Fluids Engineering, Vol. 107, pp. 153-160.

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