在节能改造前后对一座小型商业建筑进行了监测，以研究改造对通风率、湿度、建筑压力和空调能耗的影响。管道气密性测试表明，严重的管道泄漏是不可控气流的重要来源。使用示踪气体进行的压差和渗透测量表明，阁楼排气扇是另一个不受控制气流的重要来源。管道维修导致冷却能量下降31%（30.5 kWh/天），相对湿度从72%增加到76%。关闭阁楼排气系统可额外节省36%的能源（14.3 kWh/天），包括风扇功率，相对湿度从76%降至58%。 从改造前的通风测量结果来看，关闭阁楼排气扇也显著降低了大楼的通风率约62%。改造前后对该建筑的研究表明，空气泄漏可能会对具有非气密天花板的轻型商业建筑产生影响，使用良好的诊断方法发现建筑中所有不受控气流源的重要性，以及了解小型商业建筑中风管区环境的重要性。单位:双引证:研讨会，ASHRAE交易，1998年，第104卷，第2部分，多伦多

A small commercial building was monitored before and after energy-saving retrofits to study the impact of retrofits upon ventilation rates, humidity, building pressure, and air-conditioning energy use. Duct airtightness testing identified severe duct leakage as a significant source of uncontrolled airflow. Differential pressure and infiltration measurements using tracer gas indicated an attic exhaust fan as another significant source of uncontrolled airflow. Duct repair resulted in a 31% drop (30.5 kWh/day) in cooling energy and an increase in relative humidity from 72% to 76%. Turning off the attic exhaust resulted in an additional 36% energy savings (14.3 kWh/day), including fan power, and a decrease in relative humidity from 76% to 58%. Turning off the attic exhaust fan also significantly reduced the ventilation rate in the building by about 62% from pre-retrofit ventilation measurements. The study of this building before and after retrofits illustrates the impacts that air leakage can have on light commercial buildings with nonairtight ceilings, the importance of using good diagnostics to discover all sources of uncontrolled airflow in buildings, and the importance in understanding what the duct zone environment is like in small commercial construction.Units: Dual