在住宅空间调节方面，可变容量系统有可能为房主提供更大的舒适度和更低的能源消耗。对于电力设施而言，可变容量系统可能为电网的负荷管理提供资源。本文在实验室和现场条件下对单速和变容量住宅热泵设备的制冷性能和效率进行了比较。在实验室测试中，使用了两区干湿室，以在规定的室内和室外条件下检查单速和可变容量系统。通过实验室测量，确定了冷却能力和能效比。在实验室测试中，变速系统控制在高、中、低压缩机转速下。 实验室测试的结果比较了单速和变速系统在室外温度范围内的制冷能力和能效比。在佛罗里达州彭萨科拉的一个住宅中，对单速和变容量热泵进行了现场比较。在该住宅中，对之前安装的单速系统进行了一段时间的监控，之后将变容量系统改装到家中并进行监控。在两个系统运行期间，记录的测量值包括室外空气条件、室内空气条件和热泵的功耗。现场测试的结果提供了两个系统在类似条件下一段时间内的能耗比较。 引文:美国丹佛市ASHRAE会议论文

In residential space conditioning, variable capacity systems have the potential to provide a homeowner with greater comfort and lower energy use. For electric utilities, variable capacity systems potentially provide a resource for load management of the electrical grid. This paper provides a cooling performance and efficiency comparison between single speed and variable capacity residential heat pump equipment in both a laboratory and field setting.A two-zone psychrometric chamber was used in laboratory testing to examine both a single speed and variable capacity system at specified indoor and outdoor conditions. From laboratory measurements, cooling capacity and energy efficiency ratio were determined. In laboratory testing, the variable speed system was controlled at high, intermediate, and low compressor speeds. Results from the laboratory testing provide a comparison of the cooling capacity and energy efficiency ratio over a range of outdoor temperatures between a single speed and variable speed system.A field comparison of a single speed and a variable capacity heat pump was conducted at a residence in Pensacola, FL. At the residence, a previously installed single speed system was monitored for a period of time, after which a variable capacity system was retrofitted into the home and monitored. During the operation of both systems, measurements recorded included outdoor air conditions, indoor air conditions, and power consumption of the heat pump. Results from field testing provide an energy consumption comparison between the two systems for a time period with similar conditions.