Performance Analysis of a Ground Source Heat Pump System Using Mine Water as Heat Sink and Source
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- CDH Energy Corp., Cazenovia, NY (United States)
- Montana Tech of the Univ. of Montana, Butte, MT (United States)
This paper summarizes a case study of an innovative ground source heat pump (GSHP) system that uses flooded mines as a heat source and heat sink. This GSHP system provides space conditioning to a 56,000 sq ft2(5,203 m2) newly constructed research facility, in conjunction with supplementary existing steam heating and air-cooled chiller systems. Heat transfer performance and overall efficiency of the GSHP system were analysed using the available measured data from January through July 2014. The performance analysis identified some issues with using mine water for cooling and the integration of the GSHP system with the existing steam heating system. Recommendations were made to improve the control and operation of the GSHP system. These recommendations, in conjunction with the available measured data, were used to predict the annual energy use of the system. Finally, the energy and cost savings and CO2 emission reduction potential of the GSHP system were estimated by comparing with a baseline scenario. This case study provides insights into the performance of and potential issues with the mine-water source heat pump system, which is relatively under-explored compared to other GSHP system designs and configurations.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1328278
- Journal Information:
- ASHRAE Transactions, Vol. 122, Issue 2; ISSN 0001-2505
- Publisher:
- ASHRAECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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