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A Study on the Monitoring Methods for Energy Production in Ground Source Heat Pump System

지열원 열펌프 시스템의 에너지 생산량 모니터링 신뢰도 향상 방안 연구

  • Kang, Shin-Hyung (Department of Mechanical Engineering, Konyang University) ;
  • Lee, Kwang Ho (Department of Architecture, Korea University) ;
  • Do, Sung Lok (Department of Building and Plant Engineering, Hanbant National University) ;
  • Choi, Jong Min (Department of Mechanical Engineering, Hanbant National University)
  • 강신형 (건양대학교 기계공학과) ;
  • 이광호 (고려대학교 건축학과) ;
  • 도성록 (한밭대학교 설비공학과) ;
  • 최종민 (한밭대학교 기계공학과)
  • Received : 2019.05.08
  • Accepted : 2019.05.28
  • Published : 2019.06.01

Abstract

In this study, the present regulation of heat metering for the ground source heat pump was investigated. The ground source heat pump has been adopting the heat metering system used in the district heating system for estimating the heating and cooling energy production amount. The accuracy of the present heat metering systems for a water to water ground source heat pump is low, because the system for district heating has a relatively high temperature range comparing with the ground source heat pump operating conditions. Even though the heat amount for the building side should be measured, the heat absorption and extraction amount from or to the ground was measured for the water to air ground source heat pump due to the difficulty of estimating the air side heating and cooling capacity in the present regulation. It is highly recommended to validate the heat metering system to have reliability for the ground source heat pump and develop the system to be applicable water to air ground source heat pump.

Keywords

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Fig. 1. Integrating heat meter structure.

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Fig. 2. Schematic diagram of air enthalpy test facility.

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Fig. 3. Schematic diagram of water-enthalpy calorimeter [20].

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Fig. 4. Schematic diagram of refrigerant-enthalpy calorimeter [20].

Table 1. Heat pump type [13]

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Table 2. Requirement of measuring devices

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Table 3. Items of measurement and monitoring

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Table 4. Classification and Environmental conditions of heat meter

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Table 5. Sensor and device to obtain the capacity of the heat pump

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