Influence of long-term thermal history on thermal comfort and preference

2020 ◽  
Vol 210 ◽  
pp. 109685 ◽  
Author(s):  
Mina Jowkar ◽  
Richard de Dear ◽  
James Brusey
Keyword(s):  
Thermal Comfort ◽  
Thermal History

scholarly journals Outdoor Thermal Comfort at a University Campus: Studies from Personal and Long-Term Thermal History Perspectives

2020 ◽  
Vol 12 (21) ◽  
pp. 9284
Author(s):  
Jiao Xue ◽  
Xiao Hu ◽  
Shu Nuke Sani ◽  
Yuanyuan Wu ◽  
Xinyu Li ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Thermal History ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Cold Climate ◽  
Outdoor Thermal Comfort ◽  
Climate Index ◽  
University Campus ◽  
Winter Climate

Thermally comfortable outdoor spaces have contributed to high-quality urban living. In order to provide a further understanding of the influences of gender and long-term thermal history on outdoor thermal comfort, this study conducted field surveys at a university campus in Shanghai, China by carrying out microclimatic monitoring and subjective questionnaires from May to October, 2019. The analysis of collected data found that, during our survey, 57% of the occupants felt comfortable overall and 40–60% of them perceived the microclimate variables (air temperature, humidity, solar radiation, and wind speed) as “neutral”. The universal thermal climate index (UTCI) provided a better correlation with occupant thermal sensation than the physiologically equivalent temperature (PET). Females were more sensitive to the outdoor thermal environment than males. Older age led to lower thermal sensation, but the thermal sensitivities for age groups of <20, 20–50, and >50 were similar. Occupants who had resided in Shanghai for a longer period showed higher overall comfort rating and lower thermal sensation. Interviewees who came from hot summer and cold winter climate regions were less effected by the change of UTCI than those from severe cold or cold climate regions.

A tropical field study on outdoor bioclimatic comfort of people with different thermal histories

2020 ◽  
pp. 1420326X2095123
Author(s):  
Chunjing Shang ◽  
Yanxi Chen ◽  
Jianhong Cai ◽  
Zhongjun Zhang
Keyword(s):  
Thermal Comfort ◽  
Field Study ◽  
Thermal History ◽  
Environmental Changes ◽  
Thermal Sensation ◽  
Physiological Equivalent Temperature ◽  
Cold Regions ◽  
Bioclimatic Comfort ◽  
Thermal Histories

Several studies reported that the long-term thermal history of the human body affects its thermal comfort and preferences. We conducted a tropical field study in Sanya city, China; 1512 questionnaires were collected from tourists. The tourists had five thermal histories associated with five different climate regions (cold, severely cold, hot summer, cold winter, hot summer and warm winter and temperate regions). Our results showed that the human body's long-term thermal history had distinct influences on their thermal sensation, thermal comfort and preferences at their destination. Greater difference in a subject's thermal history from that of the tourist destination showed greater difference in the bioclimatic comfort and thermal preference. The neutral physiological equivalent temperature (nPET) of tourists with thermal histories in the severely cold and cold regions was 25.6°C and 25.9°C, respectively. The nPET was 1.4°C and 1.7°C higher than that of the temperate regions, respectively. The relationship between thermal acceptability vote and thermal comfort vote showed that the tourists with thermal histories in the severely cold and cold regions were more sensitive to environmental changes than those with histories from the other regions.

Effect of long-term thermal history on physiological acclimatization and prediction of thermal sensation in typical winter conditions

2020 ◽  
Vol 179 ◽  
pp. 106936 ◽  
Author(s):  
Yuxin Wu ◽  
Hong Liu ◽  
Baofan Chen ◽  
Baizhan Li ◽  
Risto Kosonen ◽  
...  
Keyword(s):  
Thermal History ◽  
Thermal Sensation ◽  
Winter Conditions

Effect of Long-Term Storage and Thermal History on the Gas Content of Natural Gas Hydrate Pellets under Ambient Pressure

2015 ◽  
Vol 29 (8) ◽  
pp. 4827-4834 ◽  
Author(s):  
Hiroko Mimachi ◽  
Masahiro Takahashi ◽  
Satoshi Takeya ◽  
Yoshito Gotoh ◽  
Akio Yoneyama ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Hydrate ◽  
Thermal History ◽  
Ambient Pressure ◽  
Gas Content ◽  
Natural Gas Hydrate ◽  
Long Term Storage ◽  
Term Storage

Long-term dynamics of thermal comfort in the territories of the Krasnoyarsk region climate belts

2021 ◽  
pp. 38-45
Author(s):  
Rofail Salykhovich Rakhmanov ◽  
Denis Alekseevich Narutdinov ◽  
Elena Sergeevna Bogomolova ◽  
Natalya Nikolaevna Potekhina ◽  
Sergey Aleksandrovich Razgulin
Keyword(s):  
Risk Assessment ◽  
General Population ◽  
Health Risk ◽  
Thermal Comfort ◽  
Effective Temperature ◽  
Climate Zones ◽  
Climate Zone ◽  
Subarctic Climate ◽  
Continental Climate

Health risk assessment in the general population in different climate zones of the Krasnoyarsk Territory by the equivalent effective temperature (EET). The average monthly EET according to Missenard was calculated, their dynamics and health risk were assessed within two periods of determining climate norms for the last 10 years of each period (1961–1990 and 1991–2020). Within the period of 1991–2020 compared with the previous period in the subarctic climate in the summer months, EET had positive values (in opposition of 2 months in 1961–1990), increased in April by 7.87 °С (p = 0.0004), in June by 5.56 °С (p = 0.019) and October by 3.2 °С (p = 0.038); in continental climate zone — in April at 5.23 °С (p = 0.0001), in June at 3.88 °С (p = 0.0009) and in August at 1.32 °С (p = 0.023). Living conditions of the population have become more favorable, the nature of the health risk has changed. In the subarctic climate, the changes in uncomfortable conditions occurred according to the criteria of «frostbite threat» — «cold» (5 months against 6 months in the first period), «cool» — «moderately cool» (2 months against 3 months), «comfort, moderately warm. «In the continental climate zone, the changes were noted according to the criteria of «moderately warm» — «very cool» (7 months against 5 months). In both climate zones, positive changes have caused a decrease in health risk according to two criteria («the threat of frostbite»; «very cold»); there was a shift from the risk assessed as «cold»towards «comfort, moderately warm».

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