不同环境下个体通风服的制冷量

doi:10.13475/j.fzxb.20200908507

纺织学报 ›› 2021, Vol. 42 ›› Issue (10): 139-145.doi: 10.13475/j.fzxb.20200908507

不同环境下个体通风服的制冷量

吴国珊¹^,², 刘何清¹(), 吴世先¹^,², 游波¹, 宋小鹏²

1.湖南科技大学资源环境与安全工程学院, 湖南湘潭 411201
2.桂林航天工业学院能源与建筑环境学院, 广西桂林 541004

收稿日期:2020-09-30 修回日期:2021-06-17 出版日期:2021-10-15 发布日期:2021-10-29
通讯作者: 刘何清
作者简介:吴国珊(1980—),男,副教授,博士生。主要研究方向为矿井热害防治与人体热舒适。
基金资助:
国家自然科学基金项目(51474105);国家自然科学基金项目(51704110)

Cooling capacity of personal ventilation systems in different environments

WU Guoshan¹^,², LIU Heqing¹(), WU Shixian¹^,², YOU Bo¹, SONG Xiaopeng²

1. School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China
2. School of Energy and Building Environment Engineering, Guilin University of Aerospace Technology, Guilin, Guangxi 541004, China

Received:2020-09-30 Revised:2021-06-17 Published:2021-10-15 Online:2021-10-29
Contact: LIU Heqing

摘要/Abstract

摘要：

在不同热环境和人体新陈代谢率下,通风服的制冷量还不明确。根据人体皮肤温度与新陈代谢率、直肠温度以及环境参数之间的关系,基于通风服进出口空气焓差法的制冷量计算模型,对新陈代谢率分别为210 W/m²(重度劳动)和145 W/m²(中度劳动)下,温度为30~40 ℃、湿度为0~100%、通风量为10~40 m³/h时通风服的制冷量进行计算。根据计算结果绘制不同新陈代谢率和热环境下通风服制冷量的等值线图。研究发现:环境温度越高,湿度越大,通风服制冷量越小;在高温高湿环境下,通风服制冷量存在为0和负数的情况。通气量对制冷量的正负无影响;通气量越大,制冷量的绝对值越大,在相同环境参数和通气量时,人体新陈代谢率增加,通风服的制冷量越大。

关键词: 通风服, 制冷量, 热环境, 热舒适

Abstract:

In different thermal environment and human metabolic rate, the cooling capacity of personal ventilation system (PVS) is unclear. According to the relationship between skin temperature and metabolic rate, rectal temperature and environmental parameters, the calculation model of cooling capacity was established based on the method of enthalpy difference between the inlet and outlet air of PVS. The cooling capacity of PVS were calculated when the temperature was 30-40 ℃, the humidity was 0-100% and the air flow is 10-40 m³/h, the metabolic rate were 210 W/m² (heavy labor) and 145 W/m² (moderate labor) respectively. According to the calculation results, the contour maps of cooling capacity of PVS under different metabolic rate and thermal environment were drawn. It was found that the higher the ambient temperature and the humidity was, and the smaller the cooling capacity was. In the high temperature and humidity environment, the cooling capacity of PVS may become zero or negative. The air flow only affects the absolute value of cooling capacity. The larger the air flow was, the larger the absolute value of cooling capacity was. When the environmental parameters and ventilation were constant, the higher the metabolic rate of the human body, the greater the cooling capacity of PVS. When the metabolic rate of the human body and environmental parameters are known, the cooling capacity of PVS can be calculated according to this method.

Key words: personal ventilation system, cooling capacity, hot environment, thermal comfort

中图分类号:

TB18

吴国珊, 刘何清, 吴世先, 游波, 宋小鹏. 不同环境下个体通风服的制冷量[J]. 纺织学报, 2021, 42(10): 139-145.

WU Guoshan, LIU Heqing, WU Shixian, YOU Bo, SONG Xiaopeng. Cooling capacity of personal ventilation systems in different environments[J]. Journal of Textile Research, 2021, 42(10): 139-145.

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不同环境下个体通风服的制冷量

Cooling capacity of personal ventilation systems in different environments

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