环境保护局目前的规定要求在1996年之前使用新的环境可接受的制冷剂。制冷和空调制造商使用这些新制冷剂需要这些系统各部件的设计数据。本研究的重点是获取蒸汽压缩系统中蒸发器和冷凝器的设计数据。具体而言，一种新的环境可接受的制冷剂HFC-134a在仪表化蒸发器和冷凝器中进行了测试，并对其性能进行了测量。HFC-134a是制冷剂CFC-12的替代品。

Mandates currently in place by the Environmental Protection Agency require use of new environmentally acceptable refrigerants by 1996. Implementation of these new refrigerants by refrigeration and air-conditioning manufactures requires design data for the various components of these systems. This study focused on obtaining design data for evaporators and condensers of vapor compression systems. Specifically, a new environmentally acceptable refrigerant HFC-134a, which is targeted as a replacement for refrigerant CFC-12, was tested in an instrumented evaporator and condenser and their performance measured.