Abstract

A methodology to generate the mathematical model to simulate the steady-state operation of the thermostatic expansion valves is described. Such a model is necessary in understanding the operation of a refrigeration system used in cooling electronics. The model treats the mutual dependence between the valve’s throttling and control functions, and requires a few experimentally determined parameters. Specifically, the characteristic of the valve changes with the evaporating temperature, and a simple model to represent this influence on the valve is suggested.

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