A Dynamic Heat Pump Experiment for the Undergraduate Energy Laboratory

该项目的目的是通过一个新的热泵实验将动态操作、控制和分析引入能源实验室，该实验将使用蒸汽压缩循环进行开发和建造。它由一台1到2吨的制冷压缩机组成，由一个可编程的变速驱动，布置成可以在两个相同的绝缘液体充满罐之间的两个方向上泵送“热”。提供阀门是为了使蒸发器和冷凝器的作用可以互换。这允许快速的周期时间，因此可以在一个两小时的实验室周期内运行多个动态实验。压力、温度、流量、电机转速和扭矩传感器将通过A/D转换器输入到PC，以便记录和显示瞬变过程，从而进行数据分析。学生可以研究系统对不断变化的负载的反应，他们可以观察工作周期过程中COP的变化，他们可以考虑几种控制策略，以努力将能耗降至最低。在实验设计中强调能量和设计相关概念的协同作用。

The aim of the project is to introduce dynamic operation, control and analysis into the energy laboratory via a new heat pump experiment that is to be developed and constructed using a vapor compression cycle. It consists of a 1 to 2 ton refrigeration compressor driven by a programmable variable speed drive, and arranged so that "heat" can be pumped in either direction between two identical insulated liquid filled tanks. Valves are provided so that the role of the evaporator and condenser can be reversed. This allows a rapid cycle time so that several dynamic experiments can be run during the course of a single two hour laboratory period. The pressure, temperature, flow, motor speed and torque transducers will input to a PC via an A/D convertor so that the transient can be recorded and displayed, and so that data analysis can be performed. The students can examine how the system responds to changing loads, they can observe the change in COP during the course of the work cycle, and they can consider several control strategies in an effort to minimize energy consumption. A synergy of energy and design related concepts is emphasized in the experimental design.