地下风道传热凝湿计算方法  

Calculation method of heat transfer and condensation humidity for underground air inlet tunnel

作　　者：渠永通 苟红松 曾臻[1,2] 吴炜[1] 刘伊江[1] 肖益民[2] Qu Yongtong;Gou Hongsong;Zeng Zhen;Wu Wei;Liu Yijiang;Xiao Yimin(China Railway Eryuan Engineering Group Co.,Ltd.;Chongqing University)

机构地区：[1]中铁二院工程集团有限责任公司 [2]重庆大学

出　　处：《制冷与空调》2025年第2期53-60,共8页Refrigeration and Air-Conditioning

摘　　要：指出了现有地下风道热湿传递计算方法存在的问题,结合现场实测情况,分析得出空气流过地下风道降温减湿会依次经历干冷却、结露凝湿和起雾凝湿三个阶段,并以此为基础提出了一种新的传热凝湿计算模型。通过对多个工程大量风道实测数据的分析拟合,分别得到了空气起始凝湿相对湿度和凝湿温湿比随运行工况变化的关系图,并将对应结果程序化,嵌入改进后的动态隐式计算模型中。用2组工程实测数据进行了比较验证,结果表明,改进后的程序计算结果与实测数据更吻合,且当风道长度较小时,误差改善效果十分显著。This paper points out the problems existing in the existing calculation methods of heat and moisture transfer in the underground air duct. Combined with the field measurement, it is analyzed that the cooling and dehumidification of the air flowing through the underground air duct will successively go through three stages: dry cooling, dewing and condensation, and fogging and condensation. Based on this, a new calculation model of heat and condensation is proposed. Through the analysis and fitting of a large number of measured data of air ducts in several projects, the relationship diagrams of the initial relative humidity of air condensation and the temperature humidity ratio of air condensation with operating conditions are obtained respectively, and the corresponding results are programmed and embedded in the improved dynamic implicit calculation model. The results show that the calculated results of the improved program are more consistent with the measured data, and the error improvement effect is very significant when the length of the air duct is small.

关 键 词：地下风道 数据拟合 动态计算 起雾 凝湿 

分 类 号：TU962[建筑科学]