制冷系统可燃工质泄漏喷射过程的模拟研究

SIMULATING THE LEAKAGE PROCESSES OF FLAMMABLE REFRIGERANTS FROM COOLING SYSTEM

本文提出了制冷系统气相可燃工质泄漏量的计算方法。并根据射流原理，对可燃工质泄漏过程的速度场与浓度场进行了模拟计算。根据计算结果提出了局部着火与爆炸的概念。

In this paper the reasons of leakage of flammable refrigerants is discussed, and the method is established for calculating the leakage quantity of flammable refrigerants from the cooling system. The most dangerous leakage point in the cooling system is analysis. According the theory of efflux the models are setup for simulating speed and concentration fields. The simulating results prove that there is a part area after the leakage hole or crack with flammable mixtuxe gases where may produce fire or explosion hazards.