Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, 400045, China.
Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, 400045, China.
J Therm Biol. 2019 Dec;86:102448. doi: 10.1016/j.jtherbio.2019.102448. Epub 2019 Nov 1.
Human thermal adaptation is an important factor of indoor thermal comfort and energy conservation. To study the effect of indoor thermal history on cold adaptation in the early winter, climate chamber tests were conducted in cold environments at 16 °C with two different thermal experience groups. The groups are divided as follows: the natural ventilation (NV) group consisted of subjects living in naturally ventilated buildings (approximately 11.8 ± 3.4 °C in winter (Liu, H., Wu, Y., Li, B., Cheng, Y., Yao, R., 2017. Seasonal variation of thermal sensations in residential buildings in the Hot Summer and Cold Winter zone of China. Energy and Buildings 140, 9-18)) and the air conditioning (AC) group consisted of subjects living in air-conditioned buildings for at least one year before the climate chamber experiments. The experiments on the NV and AC groups were conducted between December 1-13 and December 15-25, respectively. Each group consisted of 20 subjects wearing winter clothes (1.15 ± 0.05 clo). The thermal sensation votes (TSVs) and thermal comfort votes (TCVs) in both groups were investigated and the subjects' skin temperatures were monitored during the experiments. The results showed that the mean TCV and TSV of both groups were not significantly different in the early winter. However, differences were observed in the subjects' localized body parts. The skin temperatures of the chest and arms of subjects in the NV group were higher than those in the AC group after exposure for 60 min at 16 °C, while calves skin temperatures of subjects in the NV group were lower. In addition, subjects in the AC group were found to feel colder compared to those in the NV group in cold environments at the same skin temperature. Thus, this study provides information about thermal comfort based on thermal experience in early winter.
人体热适应是室内热舒适和节能的一个重要因素。为了研究初冬室内热历史对冷适应的影响，在 16°C 的寒冷环境中进行了气候室测试，分为两组具有不同的热经验：自然通风 (NV) 组由居住在自然通风建筑中的受试者组成（冬季约为 11.8±3.4°C（Liu, H., Wu, Y., Li, B., Cheng, Y., Yao, R., 2017. Seasonal variation of thermal sensations in residential buildings in the Hot Summer and Cold Winter zone of China. Energy and Buildings 140, 9-18）），空调 (AC) 组由在气候室实验前至少一年居住在空调建筑中的受试者组成。NV 和 AC 组的实验分别在 12 月 1 日至 13 日和 12 月 15 日至 25 日进行。每组有 20 名受试者穿着冬季服装（1.15±0.05 clo）。在实验过程中，对两组的热感觉投票（TSV）和热舒适投票（TCV）进行了调查，并监测了受试者的皮肤温度。结果表明，初冬两组的平均 TCV 和 TSV 没有显著差异，但在受试者的局部身体部位观察到差异。暴露在 16°C 环境 60 分钟后，NV 组受试者的胸部和手臂皮肤温度高于 AC 组，而 NV 组受试者的小腿皮肤温度较低。此外，在相同皮肤温度下，处于寒冷环境中的 AC 组受试者比 NV 组受试者感觉更冷。因此，本研究提供了初冬基于热经验的热舒适信息。
