低壓環(huán)境不同代謝水平下人體熱感覺的探究
發(fā)布時間:2018-02-11 13:58
本文關(guān)鍵詞: 低氣壓環(huán)境 不同活動水平 不同環(huán)境溫度 散熱量 人體熱感覺 出處:《青島理工大學(xué)》2013年碩士論文 論文類型:學(xué)位論文
【摘要】:隨著經(jīng)濟(jì)和社會的發(fā)展,人們越來越注重室內(nèi)環(huán)境的舒適性,而熱環(huán)境是影響人體舒適程度的主要因素,因此人體熱舒適的研究近年來得到了迅猛的發(fā)展。人們室內(nèi)工作、生活的活動水平由靜坐為主的輕度活動,逐步變得多樣化,代謝量有了顯著增加,由輕度活動增加到了中等、重度活動水平。我國海拔高度大于1000米的陸地面積約占全國陸地面積的60%,并且是世界上高原人口數(shù)量最多的國家,另外航空領(lǐng)域也涉及到低氣壓環(huán)境,使得低壓領(lǐng)域的人體熱舒適日漸的成為研究熱點(diǎn)。因此本文結(jié)合以上的現(xiàn)狀對低壓下輕度、中等、重度三種活動水時的人體熱感覺展開了研究。 低氣壓環(huán)境下人體的熱感覺、熱舒適、散熱量及生理參數(shù)會較常壓時發(fā)生變化,進(jìn)而會影響人體對熱環(huán)境的評價,因此熱感覺的評價模型也會發(fā)生變化。本文在分析以上變量的基礎(chǔ)上建立適用于0.8atm內(nèi)不同大氣壓力下不同活動水平的熱感覺預(yù)測模型。 實(shí)驗(yàn)中首先通過對大氣壓力研究范圍的細(xì)化,探究了人體熱感覺、熱舒適、皮膚溫度及新陳代謝率隨壓力的變化情況;其次通過增大環(huán)境溫度的變化范圍、設(shè)置不同的活動強(qiáng)度,研究了不同大氣壓力不同環(huán)境溫度不同活動水平時人體熱感覺的變化規(guī)律。 對實(shí)測熱感覺TSV進(jìn)行了分析,對比不同活動水平下TSV與PMV,研究TSV與PMV隨壓力的變化率;從皮膚溫度和皮膚濕潤度的角度提出了綜合皮膚指標(biāo)的概念,探討其熱可接受范圍。此外,通過分析皮膚溫度、出汗感與熱感覺的關(guān)系,獲得了不同大氣壓力和活動水平時的中性皮膚溫度,與前述綜合皮膚溫度指標(biāo)結(jié)果進(jìn)行對比;進(jìn)一步地,,對不同大氣壓力、活動水平和環(huán)境溫度下人體散熱量進(jìn)行解析、研究顯熱散熱與潛熱散熱的相對變化,并以(1-Q/M)作為控制變量來研究其與人體熱感覺TSV的關(guān)系。
[Abstract]:With the development of economy and society, people pay more and more attention to the comfort of indoor environment, and thermal environment is the main factor that affects the degree of human body comfort, so the research of human thermal comfort has developed rapidly in recent years. The level of activity in life has gradually become diversified from a mild activity dominated by sit-ins, and the amount of metabolism has increased significantly, from mild activity to moderate activity. Heavy activity level. China's land area above 1000 meters above sea level accounts for about 60 percent of the country's land area, and is the country with the largest population on the plateau in the world. In addition, the aviation field also involves a low-pressure environment. The thermal comfort of human body in the field of low pressure has become a research hotspot. Therefore, this paper studies the thermal sensation of human body under low pressure under mild, medium and heavy water. The thermal sensation, thermal comfort, heat dissipation and physiological parameters of the human body under low pressure will change compared with the normal pressure, which will affect the human body's evaluation of the thermal environment. Therefore, the evaluation model of thermal sensation will also change. Based on the analysis of the above variables, a prediction model of thermal sensation with different activity levels under different atmospheric pressure in 0.8atm is established in this paper. In the experiment, the changes of thermal sensation, thermal comfort, skin temperature and metabolic rate with pressure were investigated by refining the research scope of atmospheric pressure; secondly, by increasing the range of environmental temperature, With different activity intensity, the changes of human body thermal sensation under different atmospheric pressure, different ambient temperature and different activity level were studied. In this paper, we analyzed the measured thermal sensory TSV, compared TSV with PMV at different activity levels, studied the change rate of TSV and PMV with pressure, put forward the concept of integrated skin index from the angle of skin temperature and skin wettability. In addition, by analyzing the relationship among skin temperature, sweating sensation and thermal sensation, the neutral skin temperature at different atmospheric pressure and activity level was obtained, and the results were compared with the results mentioned above. Furthermore, the relative changes of sensible heat dissipation and latent heat dissipation are studied under different atmospheric pressure, activity level and ambient temperature, and the relationship between heat transfer and human thermal sensation TSV is studied by using 1-Q / M as the control variable.
【學(xué)位授予單位】:青島理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:R126.8;TU111
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