在取暖季节，人们广泛使用夜间自动调温器来实现节能。早晨从夜间温度骤降中恢复所需的时间是供暖设备的一个重要特征。在华盛顿特区两个无人居住的研究所进行的测试中，正在评估住宅空间调节系统的各个性能方面。在1987年至1988年的供暖季节，使用四台商用燃气和电阻炉进行了测试，其尺寸超过房屋设计热损失的20%至103%。 房屋中的恒温器设定值为72华氏度（22.2摄氏度），并实施了8小时12华氏度（6.7摄氏度）的夜间调整。通过使用热湿发生器、照明和设备的预定操作，模拟了居住者的存在。研究用房的装修适度，可以满足一个三口之家的居住条件。在挫折期内，室内外平均温差（δT）为50°F时，对于尺寸分别为37%和0%的燃气炉，早晨的取暖时间为两小时。 对于尺寸超过103%的燃气炉，需要9小时。每个炉子的早晨拾取时间与大范围的δT呈线性相关。测试结果表明，测试的熔炉的早晨取料时间比之前在ASHRAE手册中公布的时间长。本文介绍并讨论了与炉子尺寸有关的结果，以确定可接受的拾取时间。引文:研讨会，ASHRAE交易，第95卷，pt。1989年，芝加哥

Thermostat setback at night is widely used during the heating season to achieve energy savings. The time required in the morning to recover from overnight temperature setback is an important characteristic of a heating plant.Various performance aspects of residential space conditioning systems are being assessed in tests at two unoccupied research houses in the Washington, D.C. area. Tests were conducte during the 1987-1988 heating season using four commercially available gas-fired and electric resistance furnaces sized 20% to 103% over the design heat loss for the houses. The thermostat setpoint in the houses was 72°F (22.2°C) and an eight-hour night setback of 12°F( 6.7°C) was implemented. The presence of occupants was simulated by use of heat and moisture generators, lighting, and scheduled operation of appliances. The research houses are moderately furnished to approximate conditions of occupancy for a family of three.At an average indoor-outdoor temperature difference (delta T) of 50°F during the setback period, the morning pickup time was two hours for a gas furnace oversized by 37% and and 0.9 hours for a gas furnace oversized by 103%. Morning pickup times were linearly correlated with a wide range of delta T for each furnace. Test results indicated that the morning pickup times for the furnaces tested were longer than those previously published in the ASHRAE Handbook. Results are presented and discussed as they relate to furnace sizing for acceptable pickup times.