湿热地区室外动态热环境中二节点模型的验证及修正
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TU111.2

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十三五国家重点研发计划(2016YFC0700205);国家自然科学基金(51878288)


Validation and revision of two-node model in outdoor unsteady environment in hot and humid region
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    摘要:

    快速城镇化和全球变暖使城市室外环境的热不舒适加剧,热安全风险提高。为了解湿热地区室外动态热环境中人体生理量的变化规律,为快速评价室外热环境提供依据,开展了室外人体热反应观测实验。基于实测数据,对二节点模型进行了模拟精度分析和吻合度检验,研究得到了人体在室外受风速、MRT和自身调节的作用下,皮肤温度和体核温度呈现不同的变化规律及二节点模型修正方法。在室外动态热环境中应用二节点模型,需从皮肤、体核调定温度、人体标准模型、肌体启动体温调节的环境温度值及人体与室外环境的对流换热系数4个方面对人体二节点模型进行修正,相关参数和调节过程应写成可赋值的变量或数学表达式,修正后的二节点模型对室外人体热反应预测具有通用性和适用性。

    Abstract:

    Rapid urbanization and global warming aggravate the thermal discomfort of urban outdoor environment and increase the risk of thermal security. In order to find out the physiological parameters changes of human body in outdoor thermal environment, provide a basis for rapid urban thermal environment evaluation, an outdoor experiment was carried out to observe the thermal response of human body. Based on the measured data, the simulation precision analysis and coincidence test of the two-node model were carried out. It is found that human skin temperature and body core temperature show different trends under the influence of outdoor wind speed, MRT and self-regulation, in order to ensure the simulation accuracy, the two-node model of human body needs to be modified from the following four aspects:skin and core temperature, standard human model, temperature of regulation starting, convective heat transfer coefficient, relevant parameters and calculation process shall be written as assignable variables or mathematical expressions, the revised two-node model is universal and applicable to the prediction of outdoor human thermal response.

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蒋毅,赵立华,孟庆林.湿热地区室外动态热环境中二节点模型的验证及修正[J].土木与环境工程学报(中英文),2020,42(1):168-179.

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  • 收稿日期:2019-06-28
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  • 在线发布日期: 2020-03-07
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