An oxygen supply and humidification method suitable for task air supply in high-altitude hypoxia and dry regions

IF 7.6 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Building and Environment Pub Date : 2025-07-24 DOI:10.1016/j.buildenv.2025.113481

Yang Li , Haiguo Yin , Mingming Zhai , Chenxu Zhang , Yifan Jia , Tiantian Shang , Yuanzhe Li , Zhenghui Shi , Chi Tang , Angui Li

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引用次数: 0

Abstract

This study proposed an oxygen supply and humidification method suitable for task air supply, aiming to improve the oxygen and humidity environment of the breathing zone in oxygen-deficient and dry high-altitude areas. The problem of hypoxia and dryness is solved by delivering oxygen-rich, humidified air directly to the human breathing zone through personalized air supply. Numerical simulations and field experiments were conducted to evaluate the effects of supply air velocity, oxygen concentration, and humidity level on air flow distribution and environmental optimization. The results of the study showed that an air supply velocity of 0.9 m/s, an oxygen concentration of 39% and a relative humidity level of 70% achieved the best balance between oxygen delivery, humidification efficiency and user comfort. Ergonomic evaluations showed that Oxygen supply and humidification device (OSHD) significantly improved cognitive abilities, lowered heart rate, and increased SpO₂. Memory, attention, and reaction time improved by 9.22%, 8.56%, and 8.12%, respectively, while HR decreased by 2 bpm and SpO₂ increased by 5.6%. The proposed approach provides an effective solution for mitigating the challenges of high-altitude environments, improving workplace air quality, and supporting human health and productivity.

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一种适用于高海拔缺氧干燥地区任务送风的供氧加湿方法

本研究提出了一种适用于任务送风的供氧加湿方法，旨在改善缺氧干燥高海拔地区呼吸区氧湿环境。通过个性化送风，将富氧、加湿的空气直接输送到人体呼吸区，解决了缺氧和干燥的问题。通过数值模拟和现场试验研究了送风速度、氧气浓度和湿度水平对气流分布和环境优化的影响。研究结果表明，送风速度为0.9 m/s、氧气浓度为39%、相对湿度为70%时，供氧量、加湿效率和用户舒适度达到最佳平衡。人体工效学评价显示，供氧加湿装置（OSHD）显著改善认知能力，降低心率，提高SpO2。记忆、注意力和反应时间分别提高了9.22%、8.56%和8.12%，HR降低了2 bpm， SpO2提高了5.6%。拟议的方法为减轻高海拔环境的挑战、改善工作场所空气质量和支持人类健康和生产力提供了有效的解决方案。

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来源期刊

Building and Environment 工程技术-工程：环境

CiteScore

12.50

自引率

23.00%

发文量

1130

审稿时长

27 days

期刊介绍： Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.