几项与制冷剂R22的更换有关的研究（Didion 1994）表明，需要评估旨在提高现有系统能效的设计变更。共沸（或非共沸）制冷剂混合物因其较低的臭氧消耗潜能（ODP）和全球变暖潜能（GWP）值，以及良好的热力学特性而成为极具吸引力的替代品。在等压相变期间，共沸物经历了变温滑动。这与蒸发器设计的变化相结合，可以使制冷剂和外部流体的温度滑动更好地匹配，减少热交换器的不可逆性，提高系统性能。研究蒸发器设计对性能的影响。选择了一个基于不可逆性的函数来量化与各种设计相关的惩罚，并通过实验验证的蒸发器计算机模拟进行评估，该模拟是本研究的一部分（Ragazzi 1995）。 关键词:1996年，热力学，优化，蒸发器，非共沸，制冷剂，混合物，热流，压降，比较，错流式热交换器，逆流式热交换器，R407C，R22，温差冷却:研讨会，ASHRAE Trans。1996年，第102卷，第2部分

The need to evaluate design changes, aimed at improving the energy efficiency of existing systems, has been identified by several studies related to the replacement of refrigerant R22 (Didion 1994). Zeotropic (or nonazeotropic) refrigerant blends are attractive replacements because of their low ozone depletion potential (ODP) and global warming potential (GWP) values, as well as promising thermodynamic characteristics. Zeotropes experience a variable temperature glide during isobaric phase changes. This, combined with changes in evaporator design can lead to a better match between the temperature glides of the refrigerant and the external fluid, reducing heat exchanger irreversibilities and increasing system performance. Investigates the effect of evaporator design on performance. An irreversibility-based function was selected to quantify the penalties associated with various designs, and was evaluated with an experimentally validated computer simulation of the evaporator developed as part of this study (Ragazzi 1995).KEYWORDS: year 1996, thermodynamics, optimisation, evaporators, non-azeotropic, refrigerants, mixtures, heat flow, pressure drop, comparing, cross flow heat exchangers, counterflow heat exchangers, R407C, R22, temperature difference