地铁车站公共区通风空调系统空调负荷计算
Calculation of air conditioning load for public area of underground railway station
摘要：
基于焓湿图分析，提出了地铁大系统空调负荷计算的一种新思路。结合设计规范及相关手册，探讨了单位人员新风量的合理取值，并给出了建议值；认为对车站大系统应进行逐时空调负荷计算。以某地铁全线为例，根据室内含尘浓度计算了最小换气次数，结果显示一般均低于5 h-1。分析了机器露点对空调负荷计算结果的影响，并给出了机器露点的取值建议。
Abstract：
Based on psychrometric chart, presents a new thought of air conditioning load calculation for public area of underground railway station. Combined with design codes and related manuals, discusses the reasonable value of outdoor air rate per person, and presents the suggested value. Puts forward that hourly air conditioning load should be calculated for public area. Taking all stations of one underground railway line as an example, calculates the minimum air change rate according to indoor dust concentration. The result shows that the calculated values are lower than 5 h-1 on average. Analyses the influence of apparatus dew point on calculation result of air conditioning load, and presents the suggested method of determining apparatus dew point.
Keywords:loadcalculation,psychrometricchart,outdoorairrate,CO2concentration,specificenthalpyofoutdoorair,airchangerate,apparatusdewpoint,undergroundrailwaystation