Effects of ambient temperature steps on thermal comfort requirements
Effects of ambient temperature steps on thermal comfort requirements
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DOI：
10.1007/s00484-005-0265-3
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发表时间：
2005-04
影响因子：
3.2
通讯作者：
Kazuo Nagano;Akira Takaki;Megumi Hirakawa;Y. Tochihara
中科院分区：
文献类型：
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作者：
Kazuo Nagano;Akira Takaki;Megumi Hirakawa;Y. Tochihara
本研究的目的是确定温度阶梯的热舒适性要求。30名男性受试者在34或37摄氏度的条件下暴露50分钟，然后迅速转移到31、28、25和22摄氏度的较凉爽环境中50分钟。连续测量平均皮肤温度，受试者每隔2分钟报告一次他们的热感和舒适感。步态改变后，平均皮肤温度立即下降，而热感超调并逐渐回升。皮肤温度和热感似乎都在大约20分钟内达到了恒定水平。然而，由于温度变化前的热环境条件，即使在台阶后50min，由于热环境条件的影响，由环境温度与热感觉的相关性得出的平均皮肤温度和中性温度也存在差异。中性温度随时间的变化可表示为两个衰减方程。这些方程表明，由于阶跃变化之前的热条件，中性温度与阶跃变化后的>；50分钟达到稳定状态之间存在着明显的差异。期望这些方程能够定量地预测给定实验条件下的热舒适性要求。
The purpose of this study was to determine the thermal comfort requirements for steps in temperature. Thirty male subjects were exposed for 50 min to a 34 or 37°C condition, and then quickly transferred to a cooler environment of 31, 28, 25, and 22°C for 50 min. Mean skin temperature was continuously measured, and the subjects reported their thermal sensation and comfort sensation every 2 min. Just after the step changes, the mean skin temperature immediately decreased, while the thermal sensation overshot and gradually rose again. Both the skin temperature and the thermal sensation seemed to reach a constant level within about 20 min. However, there were differences in the mean skin temperature and the neutral temperature derived from the correlation between the ambient temperature and the thermal sensation even 50 min after the steps, due to the thermal environmental condition before the changes of temperature. The change in the neutral temperature with time was expressed as two attenuating equations. These equations indicate that there is an obvious difference between the neutral temperatures due to the thermal condition before step changes, and that it takes >50 min after the step changes to reach the steady state. It is expected that these equations predict in quantitative terms the thermal comfort requirements within a given experimental condition.