辐射供冷空调系统下的人体热舒适性研究

发布时间：2018-03-01 07:23

本文关键词： 辐射供冷空调系统人体热舒适性人体热平衡显热散热量　出处：《西安交通大学学报》2017年09期 　论文类型：期刊论文

【摘要】：为了深入研究辐射供冷空调系统下的人体热舒适性,对辐射供冷空调系统的传热机理进行了分析,合理简化了人体热平衡方程,获得了人体显热散热量、辐射对流散热量比与热舒适性的关系。实验及数值模拟结果表明:在辐射供冷空调系统下,人体热舒适性指标(PMV)与人体显热散热量之间具有较好的线性关系,利用该线性关系,可从人体热平衡的角度直接对人体热舒适性进行评价;人体辐射对流散热量比与热舒适性指标之间没有明显的相关关系,即人体辐射对流散热量比对热舒适性没有影响。因此,在保证人体热舒适性的基础上,可以通过提高人体辐射对流散热量比,即使辐射供冷空调系统具有较大的辐射末端面积、较低的辐射末端温度或较高的送风温度,从而达到建筑节能的效果。此项研究可为辐射供冷空调系统的热舒适性评价及系统设计提供参考。
[Abstract]:In order to deeply study the thermal comfort of human body under radiation cooling air conditioning system, the heat transfer mechanism of radiation cooling air conditioning system is analyzed, the heat balance equation of human body is reasonably simplified, and the sensible heat dissipation of human body is obtained. The relationship between radiation convection heat transfer ratio and thermal comfort. The experimental and numerical simulation results show that there is a good linear relationship between the thermal comfort index (PMV) of human body and the sensible heat dissipation of human body under the radiation cooling air conditioning system. The thermal comfort of the human body can be evaluated directly from the point of view of human body thermal balance. There is no obvious correlation between the radiation convection heat transfer ratio and the thermal comfort index, that is, the radiation convection heat transfer ratio of the human body has no effect on the thermal comfort. On the basis of ensuring the thermal comfort of the human body, we can improve the radiation convection heat transfer ratio of the human body, even though the radiative cooling air conditioning system has a larger radiation end area, a lower radiation end temperature or a higher air supply temperature. This study can be used as a reference for the evaluation of thermal comfort and system design of radiative cooling air conditioning system.
【作者单位】：西安交通大学人居环境与建筑工程学院;陕西省建筑环境与能源工程技术研究中心;华中科技大学能源与动力工程学院;
【基金】：陕西省自然科学基础研究计划资助项目(2014JZ2-002) 陕西省科技统筹创新工程计划资助项目(2015KTCQ01-99) 陕西省重点科技创新团队资助项目(2016KCT-16)
【分类号】：TU831

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