对位于佐治亚州奥古斯塔的一座现有小学教学楼的供暖、通风和空调（HVAC）系统进行了翻新，以提高室外空气通风率，并提供更好的湿度控制。这项翻新工程是大量室内空气质量投诉以及室内表面持续存在霉菌的结果。按照ANSI/ASHRAE 62-1989（ASHRAE 1989）中的建议，每个学生的通气量增加到15 cfm。在翻修之前，屋顶暖通空调机组的间歇运行提供了室外空气，每名学生约5 cfm。采用全能量回收轮系统供应室外空气，将相对湿度控制在30%至60%之间。 为了证明该系统的有效性，室内空气质量（IAQ）测量包括挥发性有机物、甲醛、二氧化碳、温度和相对湿度在新旧操作条件下全天进行监测。这些测量结果为ASHRAE标准62-1989提供了依据，并表明教室设施需要更好的湿度控制。关键词:学校、房间、空气质量、室内、换气率、相对湿度、美国、现代化、病态建筑、模具、室外空气、热回收、性能、监测、测量、有机化合物、甲醛、二氧化碳、温度、案例研究。引用:研讨会，ASHRAE Trans。，1993年，卷。 99，第2部分，论文编号DE-93-1-1429-439，图7，表2，参考文献。

The heating, ventilating, and air conditioning (HVAC) system of an existing elementary school classroom building located in Augusta, Georgia, was renovated to upgrade the outdoor air ventilation rate and to provide better humidity control. The renovation was the result of numerous indoor air quality complaints and the persistent presence of mould and mildew on interior surfaces. The ventilation rate was increased to a constant 15 cfm per student as recommended in ANSI/ASHRAE 62-1989 (ASHRAE 1989). Previous to the renovation, outdoor air was provided by intermittent operation of rooftop HVAC units at approximately 5 cfm per student. A total energy recovery wheel system was employed to supply the outdoor air to control relative humidity between 30% and 60%. In order to demonstrate the effectiveness of the system, indoor air quality (IAQ) measurements including volatile organics, formaldehyde, carbon dioxide, temperature, and relative humidity were monitored throughout the day at both the old and new operating conditions. The results of these measurements provide justification for ASHRAE Standard 62-1989 and indicate the need for better humidity control in classroom facilities.KEYWORDS: schools, rooms, air quality, indoor, air change rate, relative humidity, USA, modernising, sick buildings, moulds, outdoor air, heat recovery, performance, monitoring, measuring, organic compounds, formaldehyde, carbon dioxide, temperature, case studies.