How Evaporator of Automotive Air Conditioner is Modelled? A Systematic Review

Ashraf Elfasakhany


Evaporator is one of essential components for automotive air conditioning system. Evaporator operates between 4-5°C superheat at the refrigerant exit condition with applying a margin of safety to assure that the flow does not be in a liquid phase, while entering the compressor. If the two-phase region gets close to the exit of the evaporator and the system does not have an accumulator, liquid droplets might enter the suction line and harm/damage the compressor. A through area expansion valve indirectly senses the evaporator exit superheat and adjusts the process flow consequently. Understanding evaporator dynamics and the way it works is essential for quality modeling process. The goal of this work is to introduce a review study of evaporator and the principle operation as well as different models presented in the early studies. About eight different evaporator models are reviewed and discussed in details. Such review study has not been introduced, according to the best of the author knowledge.


Air conditioner; Automotive; Evaporator; Models; Review.

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