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EFFECTS OF AIR MOVEMENT ON PERSPIRATION AND THERMAL COMFORT IN SUMMER IN A CLIMATE CHAMBER

夏季气候室中空气流动对排汗和热舒适度的影响

基本信息

批准号：
09650651
负责人：
UMEMIYA Nohko
金额：
$ 1.86万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650651/
关键词：
Sensation of Air Movement Electric Fan Secretion of Perspiration Thermal Comfort Climate Chamber Method of Voltingson Comfort Sweat Rate Non-Uniform air movement field around the human body 局所発汗量主観申告

项目摘要

In a climate chamber controlled at 30℃ and 60%, an electoric fan attached 1.5m above the floor and 2.0m forward the sitting subject was run and stopped for 30 minutes each in the daytime in summer. The responses of local sweat rates and thermal comfort votes to the change of air movement were analysed. The results were, (1) Mean air velocity and turbulent intensity 30 cm forward the face was 0.71m/s and 37.1% respectively for the running and 0.043m/s and 46.5% respectively for the stopping, (2) For both conditions, thermal sensation votes were at the warmer side than neutral and sensation votes of perspiration were at the side of not-sweating than neutral, (3) The air movement were evaluated 'too little' significantly for the stopping and evaluated 'cool', 'refreshing', 'making cool', and 'making comfortable' for the running, (4) The sensation except for 'sweltering' were improved after the running but 'sweltering' got the worst for the second stopping, (5) The local sweat rates were between 0.00 and 0.20(mg/cm2/min.) for the all experiments but fluctuated differently among the experiments, (6) The cumulative sweat rates for the running and the stopping in the same experiment were correlated each other with coefficients of 0.71-0.96, (7) The sensation of perspiration did not always reflect the sweat rate when voted, (8) In some eases for the larger sweat rate, the larger the sweat rate was, the hotter the thermal sensation was, (9) In some cases for the running, the larger the sweat rate was, the more comfortable the thermal comfort sensation was, (10) In some cases for the stopping, the larger the sweat rate was, the less comfortable the thermal comfort sensation was, (11) The survey on the literatures on evaluation of thermal environment shows that the subjective sensation of perspiration was regarded as important at the beginning of the field.

夏季在30℃、60%恒温的人工气候室中，将电风扇置于离地1.5m、坐位受试者前方2.0m处，白天开、停各30 min。分析了局部出汗率和热舒适性对空气流动变化的响应。结果表明：（1）跑步时，面部前方30 cm处的平均风速和湍流强度分别为0.71m/s和37.1%，而停止时分别为0.043m/s和46.5%。（2）两种状态下，热感觉票都比中性偏暖，出汗感觉票都比中性偏不出汗。（3）停站时空气流动"太少“，跑时空气流动”凉爽“、”清爽“、"凉爽”、"舒适“。（4）除”闷热“外，跑后感觉均有所改善，但第二次停站时”闷热“最差。（5）局部出汗率在0.00 ~ 0.20 mg/cm ~ 2/min之间。（6）同一实验中跑和停的累计出汗率之间的相关系数为0.71-0.96;（7）出汗感觉并不总是反映出汗率;（8）在某些情况下，出汗率越大，出汗率越大，热感觉越热，（9）在某些情况下，对于跑步，出汗率越大，热舒适感越舒适，（10）在某些情况下，对于停止，出汗率越大，热舒适感越不舒适，（11）对热环境评价文献的调查表明，出汗的主观感觉在该领域开始时被认为是重要的。