The comfort range of inhaled air temperature is meaningful to the design of air conditioning parameters at breathing zone. In summer, eight college students and eight middle-aged people were recruited to conduct a thermal comfort study in the natural and air-conditioning environment respectively. The subjects were exposed to different inhaled air temperatures from 18 °C to 34 °C at an interval of 2 °C. The study found that the perceived air quality and thermal pleasure of warm inhaled air is better in the surrounding of natural environment than that of air-conditioning environment. The neutral temperature of inhaled air is 28 °C and 26 °C, respectively. The thermal sensation vote has no significant difference between middle-aged and young people, while the thermal pleasure, air freshness and perceived air quality of middle-aged people are better than that of the young people. When the temperature of the inhaled air is 2 °C higher than the ambient temperature, the SBS symptoms are significantly increased. Therefore, the comfort range of temperature of heated air in winter is worth to be further studied.
Breathing zone Inhaled air Thermal environment Thermal comfort Air quality
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This study was supported by the National Key Research and Development Program of China (2017YFC0702700), the Graduate Scientific Research and Innovation Foundation of Chongqing, China (No. CYB18000), and the 111 Project (Grant No. B13041).
Zhang H, Arens E, Zhai YC (2015) A review of the corrective power of personal comfort systems in non-neutral ambient environments. Build Environ 91:15–41CrossRefGoogle Scholar
Vesely M, Zeiler W (2014) Personalized conditioning and its impact on thermal comfort and energy performance—a review. Renew Sustain Energy Rev 34:401–408CrossRefGoogle Scholar
Wu Y, Liu H, Li B, Cheng Y, Tan D, Fang Z (2017) Thermal comfort criteria for personal air supply in aircraft cabins in winter. Build Environ 125:373–382CrossRefGoogle Scholar
Parkinson T, de Dear R (2015) Thermal pleasure in built environments: physiology of alliesthesia. Build Res Inf 43(3):288–301CrossRefGoogle Scholar
Fang L, Clausen G, Fanger PO (1998) Impact of temperature and humidity on the perception of indoor air quality. Indoor Air 8(2):80–90CrossRefGoogle Scholar
Toftum J, Jorgensen AS, Fanger PO (1998) Upper limits of air humidity for preventing warm respiratory discomfort. Energy Build 28(1):15–23CrossRefGoogle Scholar
Fang L, Wyon DP, Clausen G, Fanger PO (2004) Impact of indoor air temperature and humidity in an office on perceived air quality, SBS symptoms and performance. Indoor Air 14(Suppl 7):74–81CrossRefGoogle Scholar
Lan L, Wargocki P, Wyon DP, Lian Z (2011) Effects of thermal discomfort in an office on perceived air quality, SBS symptoms, physiological responses, and human performance. Indoor Air 21(5):376–390CrossRefGoogle Scholar
Brager G, Zhang H, Arens E (2015) Evolving opportunities for providing thermal comfort. Build Res Inf 43(3):274–287CrossRefGoogle Scholar
Fanger PO (1970) Thermal comfort: analysis and applications in environmental engineering. Danish Technical Press, CopenhagenGoogle Scholar
Karjalainen S (2012) Thermal comfort and gender: a literature review. Indoor Air 22(2):96–109CrossRefGoogle Scholar
Mishra AK, Ramgopal M (2013) Field studies on human thermal comfort—an overview. Build Environ 64:94–106CrossRefGoogle Scholar
Bischof W, Brasche S, Kruppa B, Bullinger M Do building-related complaints reflect expectations?Google Scholar
Choi J, Aziz A, Loftness V (2010) Investigation on the impacts of different genders and ages on satisfaction with thermal environments in office buildings. Build Environ 45(6):1529–1535CrossRefGoogle Scholar
Hong L, Yuxin W, Heng Z, Xiuyuan D (2015) A field study on elderly people’s adaptive thermal comfort evaluation in naturally ventilated residential buildings in summer. J HV&AC 6(45):50–58Google Scholar
de Dear RJ, Brager GS (2002) Thermal comfort in naturally ventilated buildings: revisions to ASHRAE Standard 55. Energy Build 34(6):549–561CrossRefGoogle Scholar
Schweiker M, Fuchs X, Becker S, Shukuya M, Dovjak M, Hawighorst M, Kolarik J (2016) Challenging the assumptions for thermal sensation scales. Build Res Inf 45(5):572–589CrossRefGoogle Scholar
Li B, Yu W, Liu M, Li N (2011) Climatic strategies of indoor thermal environment for residential buildings in Yangtze River Region, China. Indoor Built Environ 20(1):101–111CrossRefGoogle Scholar
ASHRAE (2013) ASHRAE standard 55-2013: thermal environmental conditions for human occupancy. ASHRAE, AtlantaGoogle Scholar
Parkinson T, de Dear R, Candido C (2016) Thermal pleasure in built environments: alliesthesia in different thermoregulatory zones. Build Res Inf 44(1):20–33CrossRefGoogle Scholar