Heating Method and Heat Recovery Potential Prediction of Underground Railway Station Using Waste Heat from Equipment Room
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A great deal of waste heat is generated from the equipment room of subway station while heating demand exists in station platform, station hall, and office area. The conventional method is to use ventilation to remove the waste heat of the equipment room and use the heating system to meet the heat load of the corresponding heating area, which will cause a large amount of energy consumption and waste heat. The idea of using water-loop heat pump and multi-connected technology to recover waste heat from equipment room for heating of station is presented in this work. By analyzing the performance of the water-loop multi-connected heat pump system used in subway station, the preliminary design concept of the system is formed, the relevant mathematical model is established, and the optimal water temperature of the water loop is discussed. The simulation analyzes the operating characteristics of the system, and the variation law of auxiliary heating amount, heat recovery energy efficiency ratio, and overall energy efficiency ratio of the system are obtained. Based on this, this paper gives a prediction of the waste heat recovery potential of the subway stations in Harbin, Moscow, Montreal, and Helsinki.
KeywordsWaste heat recovery Water-loop heat pump Multi-connected heat pump Underground railway station
National Natural Fund Project (Number 51408457).
China Scholarship Council (Number 201807835013).
- 1.Gilbey, M., et al.: The potential for heat recovery from London underground stations and tuunels. CIBSE Technical Symposium, Leicester UK (2011)Google Scholar
- 2.Guan, X.Y., et al.: CFD simulation of a novel ventilation system of subway station in Harbin. In: Proceedings Building Simulation, 432–436 2007Google Scholar
- 3.Toki, Y.: District heating and cooling system utilizing the waste heat from the subway in the city of Sapporo. In: Proceedings Industrial Electronics Society, IECON’88, Singapore, 1000–1005 1988Google Scholar
- 7.Gao, H., et al.: Analysis of pipe spacing for capillary heat exchanger in metro tunnel. J. Qingdao Technol. Univ. 37(5), 106–109 (2016)Google Scholar
- 9.Yao, Y., et al.: Design of water-loop heat pump air conditioning system, pp. 32–33. Chemical Industry Press, Beijing (2011)Google Scholar
- 10.Wang, W., et al.: Study on the optimum water supply temperature in the middle loop of a new two-stage coupled heat pump system. Fluid mach. 36(1), 66–69 (2008)Google Scholar