Novel Design of a Personal Liquid Cooling Vest for Improving the Thermal Comfort of Pilots Working in Hot Environments

IF 4.3 2区环境科学与生态学 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Indoor air Pub Date : 2023-02-23 DOI:10.1155/2023/6666182

Jingxian Xu, Guilin Chen, Xinxin Wang, Zhong Chen, Jinjin Wang, Yehu Lu

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引用次数: 1

Abstract

Wearing a liquid cooling garment (LCG) that offers near-zone cooling improves the thermal comfort of pilots working in hot environments. Four LCG samples with different arrangements of tubes for distributing liquid were developed. Based on the analysis of the overall and local cooling efficiency of the four LCG samples using manikin tests, another novel LCG with a horizontal-vertical combined tube was proposed to achieve optimal cooling performance. Human trials were conducted to check the novel LCG for improving the thermal comfort of pilots in a hot indoor environment (40°C, 40% RH). The mean skin temperature of the subjects wearing the novel LCG was reduced by 1.9°C in the 120-minute-duration flying simulation work compared to the no-cooling scenario, and the greatest decrease in skin temperature (i.e., 5.7°C) was exhibited at the back waist. The thermal sensation at the upper body was improved to nearly neutral, and the heat stress level was reduced from moderate to slightly. The findings provide a guideline for designing personal LCG, thus benefiting the comfort and safety of pilots in hot cockpits.

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为提高飞行员在高温环境下工作的热舒适性而设计的新型个人液冷背心

穿着提供近区域冷却的液体冷却服(LCG)可以改善在炎热环境中工作的飞行员的热舒适性。研制了四种不同排液管的LCG样品。在对四种LCG样品整体和局部冷却效率进行仿真分析的基础上，提出了另一种具有水平-垂直组合管的新型LCG，以达到最佳的冷却性能。研究人员进行了人体试验，以检验新型LCG在高温室内环境(40°C, 40% RH)下是否能改善飞行员的热舒适性。在120分钟的飞行模拟工作中，佩戴新型LCG的受试者的平均皮肤温度比未佩戴LCG的受试者降低了1.9°C，其中背部腰部皮肤温度下降幅度最大，为5.7°C。上半身热感觉改善到接近中性，热应激水平由中度降低到轻度。研究结果可为驾驶员在高温驾驶舱内的舒适性和安全性设计提供指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indoor air 环境科学-工程：环境

CiteScore

10.80

自引率

10.30%

发文量

175

审稿时长

3 months

期刊介绍： The quality of the environment within buildings is a topic of major importance for public health. Indoor Air provides a location for reporting original research results in the broad area defined by the indoor environment of non-industrial buildings. An international journal with multidisciplinary content, Indoor Air publishes papers reflecting the broad categories of interest in this field: health effects; thermal comfort; monitoring and modelling; source characterization; ventilation and other environmental control techniques. The research results present the basic information to allow designers, building owners, and operators to provide a healthy and comfortable environment for building occupants, as well as giving medical practitioners information on how to deal with illnesses related to the indoor environment.