Comparative evaluation of measured and perceived indoor environmental conditions in naturally and mechanically ventilated office environments
Comparative evaluation of measured and perceived indoor environmental conditions in naturally and mechanically ventilated office environments
复制标题
自然通风和机械通风办公环境中测量和感知的室内环境条件的比较评估
DOI：
10.1007/s12273-020-0675-5
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发表时间：
2020
影响因子：
5.5
通讯作者：
Gupta R
中科院分区：
文献类型：
--
作者：
Gupta R
本文采用基于案例研究的方法，对位于英国南部的两座办公大楼的室内环境条件测量值与感知值之间的关系进行了比较评估，其中一座是自然通风，另一座是机械通风。在2017年3月至2018年9月的19个月期间，每隔5分钟连续监测环境参数（室内外温度和相对湿度、室内二氧化碳浓度）。在此期间，居住者满意度调查（横向和纵向）记录了居住者对其工作环境的看法，包括热舒适，这两个案例研究总共产生了大约5700份调查回复。在NV办公室，二氧化碳浓度很高（通常为100 - 2000 ppm），室内温度既高（100 - 27°C）又多变（工作日变化高达8°C）。相比之下，MV办公环境被发现在更窄的温度、相对湿度和二氧化碳波段内工作。这一点在MV办公室观测到的二氧化碳水平的微小季节性变化中尤为明显（很少高于1200 ppm）；而在NV办公室，在采暖季，12%的工作日二氧化碳浓度超过2000ppm，而在非采暖季，这一比例不到1%。尽管测量的室内环境条件存在差异，但两栋建筑中居住者对环境的总体满意度是相似的。研究发现，NV建筑的居住者更能忍受较高的室内温度，而中性热感觉对应于较高的室内温度，这表明了适应的作用。这对管理室内环境的能源使用具有重要意义。
This paper uses a case study-based approach to comparatively evaluate the relationship between measured and perceived indoor environmental conditions in two office buildings, one naturally ventilated and one mechanically ventilated, located in south England. Environmental parameters (indoor and outdoor temperature and relative humidity, and indoor CO2concentration) were continuously monitored at 5-minute intervals over a 19-month period (March 2017 to September 2018). During this time, occupant satisfaction surveys (both transverse and longitudinal) recorded occupant perceptions of their working environment, including thermal comfort, resulting in approximately 5700 survey responses from the two case studies combined. In the NV office, CO2 levels were high (often >2000 ppm) and indoor temperature was both high (>27 °C) and variable (up to 8 °C change in a working day). In contrast, the MV office environment was found to operate within much narrower temperature, RH and CO2bands. This was particularly evident in the little seasonal variation observed in the CO2levels in the MV office (rarely above 1200 ppm); whereas in the NV office, CO2concentrations exceeded 2000 ppm on 12% of working days during the heating seasons and less than 1% in the non-heating season. Despite these differences in measured indoor environmental conditions, occupants’ overall satisfaction with their environment was similar in both buildings. Occupants of the NV building were found to be more tolerant of higher indoor temperatures while neutral thermal sensation corresponded to a higher indoor temperature, indicating the role of adaptation. This has important implications for energy use in managing the indoor environment.
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DOI：
--
发表时间：
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期刊：
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影响因子：
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