Application Of Ground Source Heat Pumps Air Conditioning System In Metro Station

At present,the shortage of energy in China is serious,and the low efficiency of resource utilization and the serious waste are urgent problems to be solved.The development of our country basically takes the extensive development road of high input,high pollution and low efficiency.Energy consumption in various regions of the country is not optimistic.Energy conservation and emission reduction has become the primary concern of governments at all levels.Ground source heat pump system uses renewable energy and has significant environmental benefits.It can replace the traditional chiller to control the station temperature.So as to achieve the purpose of reducing the energy consumption of railway stations and achieve the national energy strategy of energy conservation and emission reduction.The application of ground source heat pump system in railway station is an inexorable trend in the utilization and extension of renewable energy.In this paper,the application of ground source heat pump system can make investors better understand the application scope and economic benefit of ground source heat pump system,and lay a good foundation for the development and promotion of the ground source heat pump system in the field of urban rail transit.In this paper,the TRNSYS model system was established to model the train station,and the maximum cooling load and the cumulative cold load of the ChangZhou Railway Station in the hot summer and cold winter area were obtained.The soil temperature curve of ground source heat pump system,the fluid temperature of the buried pipe outlet and the energy consumption of the system are studied through the TRNSYS model,and the control scheme for the ground source heat pump system for the train station in hot summer and cold winter area is obtained.Besides,the ground source heat pump system and the traditional chiller are used in ChangZhou Railway Station respectively,and the economic and environmental benefits are analyzed.The results show that the use of ground source heat pump system in Changzhou Railway Station can reduce the energy consumption of air conditioning system by 22.9% annually and save 19.7 million yuan in annual operating investment.At the same time,when the carbon trading mechanism is fully established,it has the potential to bring 715,000 yuan of carbon trading income every year,and the economic and environmental benefits are significant.