Simulation of hybrid ground-coupled heat pump with domestic hot water heating systems using HVACSIM+ |
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| Authors: | Ping Cui Hongxing Yang Jeffrey D Spitler Zhaohong Fang |
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| Affiliation: | 1. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China;2. School of Mechanical Engineering, Oklahoma State University, USA;3. Ground Source Heat Pump Research Center, Shandong University of Architecture and Engineering, Jinan, China |
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| Abstract: | A hybrid ground-coupled heat pump (HGCHP) with domestic hot water (DHW) supply system has been proposed in this paper for space cooling/heating and DHW supply for residential buildings in hot-climate areas. A simulation model for this hybrid system is established within the HVACSIM+ environment. A sample system, applied for a small residential apartment located in Hong Kong, is hourly simulated in a typical meteorological year. The conventional GCHP system and an electric heater for DHW supply are also modeled and simulated on an hourly basis within the HVACSIM+ for comparison purpose. The results obtained from this case study show that the HGCHP system can effectively alleviate the imbalanced loads of the ground heat exchanger (GHE) and can offer almost 95% DHW demand. The energy saving for DHW heating is about 70% compared with an electric heater. This proposed scheme, i.e. the HGCHP with DHW supply, is suitable to residential buildings in hot-climate areas, such as in Hong Kong. |
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| Keywords: | Hybrid ground-coupled heat pump Domestic hot water Ground heat exchanger Thermal storage water tank |
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