矿用通风服微空间环境变化特征研究

doi:10.16265/j.cnki.issn1003-3033.2022.05.0819

摘要/Abstract

摘要：

为揭示矿用通风服微空间传热特征,探讨通风服对着装人体的局部降温效果,研究服装微空间热量来源,分析通风服局部传热机制,通过数值模拟与真人受训试验分析环境温度、进气管通风量、进气管路结构对人体皮肤温度及微空间气候环境的影响。结果表明:工作环境温度对人体皮肤温度和微空间环境温度的影响显著,而进气管通风量对人体皮肤温度及微空间环境温度影响不敏感,但对微空间内部环境的风速影响较大;入口风量每增加5 m³/h,人体皮肤温度及微空间环境温度仅降低0.1~0.2 ℃,随着入口风量的增加,服装微空间内风速加大,人体皮肤吹风感加强,热舒适性增加。通过试验发现通风量为10 m³/h,降温效果最优。

关键词: 矿用通风服, 微空间, 传热特征, 数值模拟, 受训试验, 局部降温

Abstract:

In order to reveal the heat transfer characteristics of mine ventilation suits in microspace, explore the local cooling effect of ventilation clothing on the human body, the heat source of ventilation clothing microspace was studied, and the local cooling mechanism of the ventilation clothing was analyzed through comparing numerical simulations with real person training test. The influences of ambient temperature, air intake pipe ventilation rate and intake pipe structure on human skin temperature and microspace climate environment were analyzed. The research results show that the working environment temperature has a significant impact on the human skin temperature and the microspace environment temperature, while the air intake duct ventilation is not sensitive to the human skin temperature and the microspace environment temperature, but it has a great influence on the wind speed of the microspace internal environment.When the inlet air volume increases by 5 m³/h, the skin temperature and microspace environment temperature only decrease by 0.1-0.2 ℃. With the increase of inlet air volume, the wind speed in the clothing microspace increase, the human skin blowing feeling strengthens, and the thermal comfort increases. It is found that the cooling effect is the best when the ventilation rate is 10 m³/h

Key words: mine ventilation suit, microspace, heat transfer characteristics, numerical simulation, training test, local cooling

游波, 毛聪, 施式亮, 刘何清, 鲁义, 李敏. 矿用通风服微空间环境变化特征研究[J]. 中国安全科学学报, 2022, 32(5): 185-193.

YOU Bo, MAO Cong, SHI Shiliang, LIU Heqing, LU Yi, LI Min. Research on change characteristics of environment in micro space of mine ventilation suits[J]. China Safety Science Journal, 2022, 32(5): 185-193.

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比例	39%	61%

部位	微环境Q/ (m³·h^-1)	30 ℃			32 ℃			34 ℃
部位	微环境Q/ (m³·h^-1)	5	10	15	5	10	15	5	10	15
前'	温度/℃	30.82	30.66	30.43	31.95	31.89	31.77	32.89	32.74	32.63
前'	风速/(m·s^-1)	0.148	0.381	0.428	0.175	0.365	0.441	0.139	0.349	0.413
后'	温度/℃	31.01	30.89	30.91	32.11	31.73	31.95	32.94	32.65	32.79
后'	风速/(m·s^-1)	0.114	0.342	0.411	0.129	0.344	0.427	0.156	0.358	0.431
左'	温度/℃	31.13	30.88	30.69	32.15	32.02	32.14	33.11	32.92	32.75
左'	风速/(m·s^-1)	0.154	0.357	0.465	0.134	0.382	0.459	0.141	0.381	0.455
右'	温度/℃	31.33	31.25	31.12	32.22	31.83	32.03	33.28	33.13	32.71
右'	风速/(m·s^-1)	0.118	0.298	0.381	0.124	0.301	0.414	0.112	0.285	0.389
平均温度/℃		30.93	30.79	30.68	32.04	31.82	31.87	32.93	32.71	32.71
平均风速/(m·s^-1)		0.131	0.359	0.419	0.151	0.354	0.434	0.146	0.352	0.422

部位	微环境Q/ (m³·h^-1)	30 ℃			32 ℃			34 ℃
部位	微环境Q/ (m³·h^-1)	5	10	15	5	10	15	5	10	15
前'	温度/℃	30.88	30.64	30.49	32.09	32.16	31.83	32.78	32.87	32.66
前'	风速/(m·s^-1)	0.106	0.269	0.372	0.115	0.244	0.361	0.099	0.256	0.381
后'	温度/℃	30.95	30.91	30.73	32.21	32.14	31.97	33.03	32.96	32.91
后'	风速/(m·s^-1)	0.081	0.251	0.353	0.093	0.253	0.359	0.086	0.255	0.367
左'	温度/℃	31.21	31.15	31.01	32.15	31.93	32.01	33.19	33.01	33.14
左'	风速/(m·s^-1)	0.088	0.214	0.357	0.075	0.237	0.345	0.088	0.237	0.363
右'	温度/℃	31.19	31.02	30.88	32.11	32.02	31.94	33.07	32.97	33.11
右'	风速/(m·s^-1)	0.101	0.229	0.335	0.113	0.275	0.328	0.095	0.261	0.337
平均温度/℃		30.93	30.79	30.63	32.15	32.14	31.90	32.92	32.92	32.81
平均风速/(m·s^-1)		0.094	0.258	0.362	0.103	0.378	0.359	0.092	0.255	0.373