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基于暖体假人的环境热舒适评价技术研究

         

摘要

The subjective evaluation and objective test are the main methods to study the thermal comfort sensa-tion of the environment. For objective test,the predicted mean vote ( PMV) is calculated by thermal environment pa-rameters which are obtained from test points arranging in the test room. However,using the traditional method in an unsteady thermal environment,the unstable factors of indoor thermal environment leads to the difficulty to describe and predict the thermal comfort comprehensively and accurately. Through the thermal manikin is developed to evaluate thermal comfort of environment. Chinese adult human database are used to obtain the physical and physiological char-acteristics of Chinese population,50 percentile male adults' three dimensional physical data is selected to establish the thermal manikin model. The control strategy is formulated according to the thermal balance equation of the human body under the comfortable condition. It can test the heat exchange between human body and environment in an un-steady and heterogeneous thermal environment. A specific heat and humidity environment is built in an artificial envi-ronment laboratory,the PMV is obtained by the thermal manikin test system,which is -0. 8 in the current environ-ment. At the same time,the subjective evaluation test is conducted in the same environment and the thermal sensation vote (TSV) is -0. 65. The relative error is only 2. 1% between the subjective evaluations and the objective test re-sults of the manikin. It can be seen that the thermal manikin can describe and predict the environment thermal comfort comprehensively and accurately.%主观评价和客观测试是研究环境热舒适性的主要方法,一般的客观测试是通过布置测点测试室内热环境参数计算预计平均热感觉指数(PMV——Predicted Mean Vote),室内热环境的非稳态影响因素使得该方法很难综合描述并准确预测非稳态热环境下人的热舒适程度.本文通过中国成年人体数据库获取我国人群的体貌及生理特征,选取50百分位成年男性人体三维数据建立暖体假人模型,根据舒适状态下的人体热平衡方程制定控制策略,开发了一套可用于测试非稳态、非均匀热环境下人体与环境之间热量交换的暖体假人测试系统,在人工环境实验室营造特定的热湿环境,利用暖体假人测试系统测试了当前环境的预计平均热感觉指数(PMV)为-0.8,并对该环境进行被试者主观评价测试,得到热感觉投票值(TSV——Thermal Sensation Vote)为-0.65,被试者主观体验结果与暖体假人客观测试结果的相对误差仅为2.1%.

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