Fang L, Wyon D P, Clausen G, Fanger P O
International Centre for Indoor Environment and Energy, Technical University of Denmark.
Indoor Air. 2004;14 Suppl 7:74-81. doi: 10.1111/j.1600-0668.2004.00276.x.
Perceived air quality (PAQ), sick building syndrome (SBS) symptoms and performance of office work were studied in a real office space at three levels of air temperature and humidity and two levels of ventilation rate (20 degrees C/40%, 23 degrees C/50%, 26 degrees C/60% RH at 10 l s(-1) p(-1) outside air, and 20 degrees C/40% RH at 3.5 l s(-1) p(-1) outside air). Thirty female subjects participated in the experiment. They were exposed to each environmental condition for 280 min. Thermal comfort was maintained at different thermal environments by self-adjustment of clothing. The subjects performed simulated office work throughout each exposure and repeatedly marked a set of visual-analog scales to indicate their perception of environmental conditions and of the intensity of SBS symptoms at the time. The study confirmed the previously observed impact of temperature and humidity on perceived air quality and the linear correlation between acceptability and enthalpy. The impact on perceived air quality of decreasing the ventilation rate from 10 to 3.5 l s(-1) per person could be counteracted by a decrement of temperature and humidity from 23 degrees C/50% RH to 20 degrees C/40% RH. Performance of office work was not significantly affected by indoor air temperature and humidity. However, several SBS symptoms were alleviated when the subjects worked at low levels of air temperature and humidity, which implies that a longer term exposure to low indoor air temperature and humidity might help to improve the performance of office work.
The findings of this study indicate the importance of indoor air temperature and humidity on perceived air quality and SBS symptoms. In practice, the required ventilation rate for comfort and health should no longer be independent of indoor air temperature and humidity.
在一个实际办公空间中，研究了三种气温和湿度水平以及两种通风率（室外空气为10升每秒每人时，温度20摄氏度/湿度40%、23摄氏度/湿度50%、26摄氏度/湿度60%；室外空气为3.5升每秒每人时，温度20摄氏度/湿度40%）下的感知空气质量（PAQ）、病态建筑综合征（SBS）症状及办公工作表现。30名女性受试者参与了实验。她们在每种环境条件下暴露280分钟。通过自行调整衣物在不同热环境中保持热舒适。受试者在每次暴露期间全程进行模拟办公工作，并反复标记一组视觉模拟量表，以表明他们当时对环境条件的感知以及SBS症状的强度。该研究证实了先前观察到的温度和湿度对感知空气质量的影响以及可接受性与焓之间的线性相关性。将通风率从每人10升每秒降至3.5升每秒对感知空气质量的影响可通过将温度和湿度从23摄氏度/50%湿度降至20摄氏度/40%湿度来抵消。办公工作表现未受到室内气温和湿度的显著影响。然而，当受试者在低气温和低湿度环境下工作时，一些SBS症状有所缓解，这意味着长期暴露于低室内气温和湿度可能有助于提高办公工作表现。
本研究结果表明室内气温和湿度对感知空气质量及SBS症状的重要性。在实际中，舒适与健康所需的通风率不应再独立于室内气温和湿度。
