Research on the Effects of the High Temperature and Humidity Environment on Human Comfort in Coal Mine Emergency Refuge System

Jing Li,Lei Yang,Tianbao Song,Ruikang Qi

doi:10.3390/safety5020028

Jing Li, Lei Yang + Show 2 more

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https://doi.org/10.3390/safety5020028

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Abstract

A high temperature and humidity environment can be easily formed in a confined refuge system, which has a significant effect on the safety of refugees. Human survival experiments in a closed simulation chamber were carried out under high temperature and humidity conditions (the temperature was above 27 °C and the relative humidity was above 70%). The asymmetrical five-grade scale method was used first, and human comfort voting data were collected from 35 groups under different temperature and humidity conditions. A non-linear trend of the effects of different temperature and humidity conditions on human comfort was obtained through analysis, and the boundary curves for different human comfort conditions in a closed refuge chamber were determined. At the same time, a function prediction model of the apparent temperature was established, which had instructive meaning for the study and design of the environment controls and life support system in a closed rescue space for different fields.

Highlights

A coal mine emergency refuge system is a type of hermetic space that provides an airtight safe rescue station in which trapped miners may go into in case of a coal mine emergency for protection against explosion, fire, floods and other disasters
Food, water, adjust the ambient temperature, remove toxic and harmful gases, and create basic conditions for survival, which can improve the chances of survivors receiving emergency rescue [1,2,3,4,5] (Figure 1).The relevant standards for the coal mine emergency refuge system require that the survivors have a life expectancy of more than 96 h [6] without power or fresh air after the disaster and that they have a reserve factor of no less than 1.1
Humidity on Comfortinside the chamber was below 27 C, the curves for human comfort at different temperatures tended to be consistent, which indicated that the humidity

Summary

Introduction

A coal mine emergency refuge system is a type of hermetic space that provides an airtight safe rescue station in which trapped miners may go into in case of a coal mine emergency for protection against explosion, fire, floods and other disasters. The ECLSS includes five systems for oxygen supply, air purification, temperature and humidity regulation, environmental monitoring and power supply It can provide oxygen, food, water, adjust the ambient temperature, remove toxic and harmful gases, and create basic conditions for survival, which can improve the chances of survivors receiving emergency rescue [1,2,3,4,5] (Figure 1).The relevant standards for the coal mine emergency refuge system require that the survivors have a life expectancy of more than 96 h [6] without power or fresh air after the disaster and that they have a reserve factor of no less than 1.1 (i.e., survivors have no less than 106 h of an appropriate living environment).

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