HEAT TRANSFER QUANTITY CALCULATION OF GROUND HEAT EXCHANGER CONSIDERING LOAD CHARACTERISTICS OF ENERGY UNDERGROUND STATIONS

Hu Shuaijun; Kong Gangqiang; Zhong Guo; Wang Zhongtao; Dai Guohao; Yang Qing

doi:10.19912/j.0254-0096.tynxb.2022-0788

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 510-517. DOI: 10.19912/j.0254-0096.tynxb.2022-0788

HEAT TRANSFER QUANTITY CALCULATION OF GROUND HEAT EXCHANGER CONSIDERING LOAD CHARACTERISTICS OF ENERGY UNDERGROUND STATIONS

Hu Shuaijun¹, Kong Gangqiang¹, Zhong Guo², Wang Zhongtao³, Dai Guohao¹, Yang Qing³

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Abstract

In order to improve the load calculation accuracy of underground subway station and solve the design problem of buried pipe heat transfer in energy underground station, three load calculation methods (DeST simulation, Standard algorithm and Hourly algorithm) were used to calculate the annual load of underground subway stations in Dalian Metro Line 4, and the annual load characteristics of the equipment management housing area were analyzed and discussed. Further determine the heat transfer capacity of underground station ground heat exchanger. The results show that the energy demand of subway stations has obvious hourly fluctuation and correlation with environmental parameters, and the annual load obtained by hourly load calculation method is about twice as accurate as the standard method and DeST simulation. There is a great difference in the load of different rooms. The heating demand of offices is greater than the cooling demand. The equipment rooms and substation rooms need no heating all year round, and the cooling load of substation rooms is more than that of equipment rooms. The heat transfer obtained by the Hourly algorithm method can accurately reflect the annual heat transfer demand, and it is found that the unbalance rate of buried pipe heat transfer is as high as 7.14.

Key words

subway station / underground heat transfer / geothermal heat pumps / heat exchange quantity / equipment management rooms

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Hu Shuaijun, Kong Gangqiang, Zhong Guo, Wang Zhongtao, Dai Guohao, Yang Qing. HEAT TRANSFER QUANTITY CALCULATION OF GROUND HEAT EXCHANGER CONSIDERING LOAD CHARACTERISTICS OF ENERGY UNDERGROUND STATIONS[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 510-517 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0788

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