A novel rainwater–ground source heat pump – Measurement and simulation |
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| Affiliation: | 1. School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia;2. CSIRO Mineral Resources Flagship, Clayton, Victoria 3169, Australia;3. School of Mathematical Sciences, Monash University, Clayton Victoria 3800, Australia;1. HVAC Technology, Department of Energy Efficiency and Systems, School of Mechanical Engineering, Aalto University, P.O. Box 14400, FI-00076 Aalto, Finland;2. Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, Finland;1. School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China;2. State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou, Jiangsu, 221008, PR China;3. Key Laboratory of Thermo-Fluid Science and Engineering (Xi''an Jiaotong University), Ministry of Education, Xi''an, 710049, PR China |
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| Abstract: | This paper presents the results of experimental measurement and numerical simulation of the performance of a heat pump system designed to make use of rainwater and ground as heat sources/sinks. The system was tested under laboratory conditions. A refrigerant was circulated through a closed loop heat exchanger to transfer heat between the heat pump and rainwater in a storage tank and another heat exchanger made of solid bars or heat pipes to transfer heat between the stored rainwater and surrounding soil. Physical and thermal properties of soil such as water content, density, specific heat, thermal diffusivity and thermal conductivity were determined. Numerical simulations were also carried out for a rainwater storage tank installed under ground for domestic application of the heat pump with different operating modes, heating loads and the sizes and types of heat exchanger. |
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