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Building and environment v.114, 2017년, pp.96 - 105   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Performance, acute health symptoms and physiological responses during exposure to high air temperature and carbon dioxide concentration

Liu, Weiwei (School of Energy Science & Engineering, Central South University, Changsha, Hunan, China ); Zhong, Weidi ( School of Energy Science & Engineering, Central South University, Changsha, Hunan, China ); Wargocki, Pawel ( International Centre for Indoor Environment and Energy, Technical University of Denmark Denmark );
  • 초록  

    Abstract Human subjects were exposed for 3?h in a climate chamber to the air temperature of 35?°C that is an action level, at which the working time needs to be diminished in China. The purpose was to put this action level to test by measuring physiological responses, subjective ratings and cognitive performance, and compare them with responses at temperature of 26?°C (reference exposure). Moreover, CO 2 was increased to 3000?ppm (CO 2 exposure) at 35?°C to further examine, whether this change will have any effect on the measured responses. Compared with the reference exposure, exposure to 35?°C caused subjects to report feeling uncomfortably warm, to rate the air quality as worse, to report increased sleepiness and higher intensity of several acute health symptoms. Eardrum temperature, skin temperature, heart rate and body weight loss all increased significantly at this exposure, arterial oxygen saturation decreased significantly, while the percentage of adjacent inter-beat cardiac intervals differing by?>?50?m (pNN50) decreased significantly, indicating elevated stress. The performance of addition and subtraction tasks decreased significantly during this exposure, as well. Increasing CO 2 to 3000?ppm?at 35?°C caused no significant changes in responses. Present results reaffirm the selection of 35?°C as an action level, and show that concurrently occurring high CO 2 levels should not exacerbate the hazards. Highlights Subjects were exposed in a chamber for 3?h at elevated temperature and CO 2 . Physiological and subjective responses and cognitive performance were examined. Exposure to 35?°C increased health symptoms and discomfort and reduced performance. 3000?ppm CO 2 at 35?°C did not exacerbate the negative effects of high temperature. The results provide useful basis for protection of workers at high temperatures.


  • 주제어

    Temperature .   Carbon dioxide .   Physiological responses .   Acute health symptoms .   Work performance.  

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