共查询到19条相似文献,搜索用时 78 毫秒
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关于"热舒适"的讨论 总被引:33,自引:4,他引:33
指出了人体热反应研究中关于热舒适的一些模糊概念及对热舒适与热感觉关系的含混认识。分析了热舒适与热感觉的不同含义、现有的不同解释及两者的稳态和动态条件下的差别。 相似文献
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为研究上海地区人体热感觉和适应性热舒适现状,通过环境参数测量和问卷调查结合的方式来分析和探讨室内外气候条件、服装热阻、热感觉等关系。本文主要涉及自然通风建筑内人体热感觉和热中性温度随季节变化的关系。结果表明:在适应性热舒适研究中,人体中性温度与室外环境温度具有较强的相关性,得到的上海地区适应性热舒适模型可为适合我国自身特点的热舒适研究提供依据。 相似文献
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关于"热感觉"与"热舒适"的讨论 总被引:8,自引:0,他引:8
王昭俊 《建筑热能通风空调》2005,24(2):93-94,102
对哈尔滨市居民的热感觉与热舒适状况的调查结果表明:热感觉投票值分布频率与热舒适投票值分布频率是有差异的。对新加坡现场调查结果的分析数据也表明:热感觉与热舒适是不同的,热感觉和热舒适既仔在于稳态热环境中又存在于动态热环境中。 相似文献
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采用受试者主观实验的方法,分析了头部、前胸、后背、胳膊、手、腿和脚部单独进行局部送风冷刺激条件下,对整体和非刺激部位热感觉的影响,发现各部位热感觉之间存在多重共线性,采用主成分回归的方法分析了各部位对整体热感觉的影响。探讨了非均匀环境下整体热可接受度与整体热舒适及局部热可接受度之间的关系。结果表明,肢体末端的局部刺激仅能对其周围部位产生明显影响,对其他部位影响不大;躯干部位局部刺激能影响全身各个部位,从而导致身体热感觉的区域化差异;整体热舒适和整体热可接受度密切相关,局部热不可接受度在一定范围内时,不会影响整体热舒适性。 相似文献
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哈尔滨市住宅环境热舒适测试结果分析 总被引:2,自引:0,他引:2
王昭俊 《建筑热能通风空调》2004,23(3):5-8
对哈尔滨市冬季居民热舒适现场研究结果做了进一步分析和总结,重点讨论了不同性别的人体热感觉和热中性温度及预测不满意百分数PPD的最小值问题,并与寒冷地区及其他热舒适现场研究结果进行了对比分析。 相似文献
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低气压环境下空气流速对人体热感觉影响的研究 总被引:2,自引:0,他引:2
通过问卷调查的形式,研究了20名处于不同大气压力环境中受试者的热感觉和风速期望随空气流速变化的情况,进而分析了不同大气压力环境中,空气流速对用风速期望进行评价的吹风感和人体平均热感觉(MTS)的影响.研究表明:低气压环境下人体对空气流速变化的感觉不如常压下敏感,人体在较高温度下对风速变化的感觉不如较低温度下敏感.在20~22 ℃时,低气压环境下微风速(<0.2 m/s)范围内的风速变化对身着厚重衣物的受试者的热感觉影响十分微小. 相似文献
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人体吹风感影响因素的总结与分析 总被引:2,自引:0,他引:2
吹风感是评价热环境的常用指标。介绍了ASHRAE 55-2010标准中规定的室内允许最大空气速度,分析了热感觉、气流紊流强度、气流方向、性别、活动水平、年龄、疲劳程度和暴露部位等对吹风感敏感性的影响,并总结了5种常用吹风感预测模型及其适用条件。 相似文献
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为考察冬季非空调环境下人体热感觉,对厦门某高校教室的热舒适度进行了现场测试.在测量室内外热舒适参数的同时,通过问卷调查得到了人体热反应样本.分析样本得出厦门高校教室冬季非空调工况下人体热中性温度和热期望温度分别为19.3和19.4℃.综合考虑温度、相对湿度、平均辐射温度、风速及服装热阻对坐姿轻度活动状态人体的热舒适影响,使用MATLAB软件进行非线性回归,得到非空调工况下热舒适预测方程.该预测方程与实测得到的人体热舒适投票两者结果有较高相关度,同时较大程度上反映了冬季非空调环境下人体热感觉的变异. 相似文献
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对30名受试者采用问卷调查的方式,研究了均匀热环境和不均匀热环境下人体全身热感觉、热可接受度和热舒适的关系。结果显示,在均匀热环境下,全身热感觉、热可接受度和热舒适具有较强的线性相关关系,可接受范围涵盖了(0,1.5)的热感觉投票和"舒适"与"稍有不适"标度范围内的热舒适投票;在不均匀热环境下,全身热可接受度与热舒适密切相关,而全身热感觉与热可接受度和热舒适出现分离,热感觉不均匀度是其原因。综合考虑全身热感觉和热感觉不均匀度的影响,提出了综合评价模型。经验证,该模型适用于全身热状态为中性偏热的均匀和不均匀热环境。 相似文献
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A comparative analysis of urban and rural residential thermal comfort under natural ventilation environment 总被引:1,自引:0,他引:1
The paper presents a field study of occupants’ thermal comfort and residential thermal environment conducted in an urban and a rural area in Hunan province, which is located in central southern China. The study was performed during the cold winter 2006. Twenty-eight naturally ventilated urban residences and 30 also naturally ventilated rural residences were investigated. A comparative analysis was performed on results from urban and rural residences. The mean thermal sensation vote of rural residences is approximately 0.4 higher than that of urban residences at the same operative temperature. Thermal sensation votes calculated by Fanger’s PMV model did not agree with these obtained directly from the questionnaire data. The neutral operative temperature of urban and rural residences is 14.0 and 11.5 °C, respectively. Percentage of acceptable votes of rural occupants is higher than that of urban occupants at the same operative temperature. It suggests that rural occupants may have higher cold tolerance than urban occupants for their physiological acclimatization, or have relative lower thermal expectation than urban occupants because of few air-conditioners used in the rural area. The research will be instrumental to researchers to formulate thermal standards for naturally ventilated buildings in rural areas. 相似文献
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The relationships between overall thermal sensation, acceptability and comfort were studied experimentally under uniform and non-uniform conditions separately. Thirty subjects participated in the experiment and reported their local thermal sensation of each body part, overall thermal sensation, acceptability and comfort simultaneously. Sensation, acceptability and comfort were found to be correlated closely under uniform conditions and acceptable range ran from neutral to 1.5 (midpoint between ‘Slightly Warm’ and ‘Warm’) on thermal sensation scale and contained all comfortable and slightly uncomfortable votes on thermal comfort scale. Under non-uniform conditions overall thermal acceptability and comfort were correlated closely. However, overall thermal sensation was apart from the other two responses and non-uniformity of thermal sensation was found to be the reason for the breakage. Combining the effects of overall thermal sensation and non-uniformity of thermal sensation, a new thermal acceptability model was proposed and the model was testified to be applicable to uniform and non-uniform conditions over a wide range of whole body thermal state from neutral to warm. 相似文献