用PMV- PPD模型评价伊朗某教育医院的热舒适性

Javad Sajedifar, R. Mirzaei, G. Teimori, A. Mehri, F. Azadbakht, A. Choupani, M. Taheri
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摘要

背景:考虑到技术的进步和各种电器在工作场所的应用,当前在工业和非工业化工作场所最重要的讨论之一是热舒适。由于医院雇用人员的多样性及其关键作用,医院工作人员具有特殊地位。目的:调查伊斯法罕某医院员工的热舒适状况。方法:在横断面研究中,招募了Al Zahra医院在地下工作的员工。抽样方法为人口普查,共有161名工作人员参与研究。数据采集于2015年夏季,采用问卷法进行心理评估,采用湿球温度仪(WBGT)进行物理测量。预测平均投票(PMV)和预测不满意百分比(PPD)是根据员工的心理评估或个人对热舒适的感受来确定的。使用SPSS 23进行数据管理和分析。结果:数据分析结果显示,厨房、洗衣和消毒部门的温度高于其他单位。此外,结果表明,教育部门和教育班级的办公室具有符合ASHRAE(美国采暖,制冷和空调工程师协会)标准55的标准水平。各单位的生理和心理PMV调查结果显示,这两个数值的总指数分别为1.2和1.39。结论:根据研究结果,位于地下一层的单元需要合理的设计,并获得自然通风和足够的空气流量,以提供符合国际标准的最佳热舒适。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Thermal Comfort in an Iranian Educational Hospital Using PMV- PPD Model
Background: Considering the advancement of technology and application of various appliances in the workplace, one of the most significant current discussions in the industrial and nonindustrialized workplaces is thermal comfort. Hospital staff have a special status because of the diversity of people employed in hospitals and their crucial roles. Objectives: The present study aimed at investigating the staffs’ thermal comfort in a hospital in Esfahan. Methods: In this cross-sectional study, Al Zahra hospital staff working in the underground floor were recruited. The sampling method was census, and 161 staff participated in the study. Data were collected by mental assessment using a questionnaire and physical measurement using wet bulb globe temperature (WBGT) machine in the summer of 2015. The predicted mean vote (PMV) and predicted percentage dissatisfied (PPD) were determined based on mental assessment or individual feeling of the staff about thermal comfort. Data management and analyses were performed using SPSS 23. Results: The results of the data analysis revealed that kitchen, laundry, and sterilization sectors had higher temperature than other units. Moreover, the results demonstrated that the offices of educational sectors and educational classes had a standard level of thermal comfort according to ASHRAE (American society of heating, refrigerating and air-conditioning engineers) Standard 55. The investigations of physical and mental PMV in every unit showed that the total index of these 2 values was 1.2 and 1.39, respectively. Conclusions: Based on the results, the units located at the underground floor needed proper design and access to natural ventilation and enough air flow to provide optimum thermal comfort based on international standards.
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