兰州地区某地铁建筑冷负荷模拟计算研究

Study on the Simulation Calculation of a Subway Building Load in Lanzhou Area

针对兰州某地区地铁站冷负荷的计算进行研究,这对降低地铁站环控设备容量和减少运行成本有较大意义。与国内相同规模地铁车站的冷负荷相比较,模拟所得结果(最不利工况下)均在合理区间——公共区负荷549.20kW(参考值:420~570kW);设备区负荷545.19kW(参考值:404kW~581kW),表明计算方法、参数设定合理,计算结果正确。经过DeST-C模拟计算及数据分析得出以下结论:车站整体冷负荷模拟结果达到设计计算冷负荷±2%的累计时段仅占空调季(6、7、8月份)总时长的0.42%;空调季车站公共区平均冷指标模拟值为87.27W/m^(2),约占设计冷指标的73.0%;设备区平均冷指标模拟值为293.89W/m^(2),约占设计冷指标的94.7%。以上结论可作为兰州地区未来地铁车站环控设备选型、台套数匹配以及后期环控调节方案设计提供数据参考。

This paper studies the calculation of cooling load of a subway station in Lanzhou,which is of great significance to reduce the capacity of environmental control equipment and reduce the operating cost of the subway station.Compared with the cooling load of subway stations of the same size in China,the simulation results obtained in this paper(under the most adverse working conditions)are all within a reasonable range-the load in the public area is 549.20kW(reference value:420~570kW).The load of the equipment area is 545.19kW(reference value:404kW~581kW),which indicates that the calculation method and reasonable calculation result of parameter setting in this paper are correct.After DeST-C simulation calculation and data analysis,the following conclusions are drawn:the cumulative period of the station's overall cooling load simulation results reaching design calculated cooling load±2%only accounts for 0.42%of the total time of the air conditioning season(June,July and August);The simulated value of the average cooling index in the public area of the station in the air conditioning season is 87.27w/m^(2),accounting for about 73.0%of the designed cooling index.The simulated value of the average cold index in the equipment area is 293.89w/m^(2),accounting for about 94.7%of the designed cold index.The above conclusions can be used as data reference for the selection of environmental control equipment,the matching of the number of sets and the design of the later environmental control regulation scheme in Lanzhou metro stations in the future.