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中南大学学报(自然科学版)

Journal of Central South University

第46卷    第5期    总第249期    2015年5月

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文章编号:1672-7207(2015)05-1900-09
铁路客运站候车厅冬季供暖系统优化分析
喻李葵1,余雷模1,马卫武1,何列波2,李立清1,张翼1,张泠3

(1. 中南大学 能源科学与工程学院,湖南 长沙,410083;
2. 深圳市建筑设计研究总院有限公司,广东 深圳,518031;
3. 湖南大学 土木工程学院,湖南 长沙,410082
)

摘 要: 建立铁路客运站候车厅的数学物理模型,并采用实测数据对物理模型进行验证;运用数值模拟的方法,对比分析候车厅冬季最不利工况下,采用分层空调、地板辐射结合喷口送风和地板辐射结合通风柱送风共3种供暖方案下候车厅的室内热舒适性和空气品质。研究结果表明:单独使用分层空调系统时,候车厅室内出现了严重的“热气上浮”现象,非空调区域囤积有大量热量,难以满足室内舒适性要求,并造成能源的大量浪费;采用辐射地板与送风相结合的供暖系统,能得到较均匀的温度场分布,人员活动区垂直方向温差较小,有利于改善冬季空调“头暖脚凉”的不舒适感,并且大大减少了因对流换热造成的热损失,其供暖能耗可降低20%左右。

 

关键词: 铁路客运站;热舒适性;地板供暖;分层空调;室内空气品质

Optimization of radiation floor system and stratified air conditioning system in winter heating mode at passenger railway station
YU Likui1, YU Leimu1, MA Weiwu1, HE Liebo2, LI Liqing1, ZHANG Yi1, ZHANG Ling3

1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Shenzhen General Institute of Architectural Design and Research Co. Ltd., Shenzhen 518031, China;
3. College of Civil Engineering, Hunan University, Changsha 410082, China

Abstract:A mathematical physics model of a railway waiting room was established, which was confirmed by experimental data later. Numerical simulation was used to analyze indoor thermal comfort and air quality of the waiting room in the worst operating condition in winter. Three different heating systems i.e., stratified air conditioning system, radiation floor heating system combined with ejector nozzle air supply and radiation floor heating system with artificial pillar air supply were researched. The results show that relatively hot air goes upward in stratified air conditioning system, which results in heat accumulation, uncomforting and enormous loss of energy. Combined with stratified air conditioning system, radiation floor heating system contributes to more uniform temperature field and less temperature difference in perpendicular direction of occupied zone, which is beneficial to ameliorating the feeling of “warm feet and cool head”. Moreover, it can reduce the heat loss of heat convection and decrease energy consumption of heating by 20 percent.

 

Key words: railway station; thermal comfort; radiation floor heating; stratified air conditioning; indoor air quality

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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