与燃气系统相比，空气源电热泵（ASHP）具有较高的额定效率，因此在空间供暖领域得到了广泛的应用。尽管其加热能力降低的缺点，许多制造商已经优化了ASHP系统，以最大限度地提高舒适性和寒冷气候下的容量。然而，由于现场示范现场存在许多自变量的影响，ASHP性能作为室外空气温度的函数并不十分清楚。本文描述了一项关于ASHP容量的综合研究，其结果是室外和室内空气条件，以及在部件和供暖系统水平上的效率因短路而降低- 自行车和室内舒适条件。ANSI/AHRI 210/240是为制造商开发的一种ASHP额定值测试方法，用于确定作为室外空气温度函数的加热能力和效率。供暖、通风和空调（HVAC）设计师在为HVAC系统正确确定加热设备尺寸时，会考虑这些额定加热能力。这项综合研究表明，ASHP供热能力与室外和室内空气条件之间的空气焓升密切相关。因此，过热会影响供暖系统的效率和舒适性- 或尺寸不足的辅助加热设备。此外，本研究还表明，辅助加热设备可根据ASHP在实验室评估和现场演示中的运行性能，管理超过80%的低于冰点温度的热负荷。考虑到室内和室外条件，已开发出一种替代性能指标来描述ASHP，以更好地代表其在七个国际节能规范（IECC）区域和潮湿分区中的加热能力和效率。这一指标可能会让暖通空调设计师纠正错误- 根据实际加热能力确定ASHP和辅助加热设备的尺寸，以尽量减少加热系统的能耗。此外，本文还介绍了性能曲线和建模方法，用于计算建筑能耗建模应用中的能耗。引用:佛罗里达州奥兰多2020年冬季会议论文

The air-source electric heat pump (ASHP) has gained significant popularity in the space heating community due to its high-rated efficiencies in contrast to gas-fired systems. Despite its heating capacity derating disadvantages, many manufacturers have optimized ASHP systems to maximize comfort and capacity for cold climates specifically. However, ASHP performance as a function of outdoor air temperature is not very clear due to the impact of many independent variables in field demonstration sites. This paper describes a comprehensive research on ASHP capacities as a result of outdoor and indoor air conditions, and efficiencies at the component and heating system levels derated by short-cycling and indoor comfort conditions.ANSI/AHRI 210/240 is an ASHP rating test method developed for manufacturers to determine heating capacities and efficiencies as a function of outdoor air temperatures. These rated heating capacities are considered by Heating, Ventilation and Air Conditioning (HVAC) designers when right-sizing heating equipment for HVAC systems. This comprehensive research demonstrates ASHP heating capacities are strongly correlated to air enthalpy rise between the outdoor and indoor air conditions. Therefore, the heating system efficiency and comfort are affected by over- or under-sizing auxiliary heating equipment. Additionally, this research demonstrates auxiliary heating equipment manages over 80% of the heating loads below freezing temperatures based on ASHP operating performance in laboratory evaluation and field demonstration.An alternative performance metric has been developed to characterize ASHP considering indoor and outdoor conditions to better represent its heating capacities and efficiencies in the seven International Energy Conservation Code (IECC) zones and moist divisions. This metric could potentially allow HVAC designers to right-size ASHP and auxiliary heating equipment based on the actual heating capacity in order to minimize energy consumption at the heating system level. Additionally, this paper presents performance curves and modeling approaches that have been developed to calculate energy consumption for building energy modeling applications.