RESEARCH ON RISK OF HOT GAS DEFROSTING AND LIQUID HAMMER IN AMMONIA REFRIGERATION

摘要

Two accidents of leak of ammonia that took place in 2013 were attributed tornwrong operation of hot gas defrosting. ·It is the liquid hammer that destroyed the ellipticalrnhead of the pipe, resulting in the great loss of life and property. The process of hot gasrndefrosting is introduced according to the principle. The appearance of liquid explosion, liquidrnhammer and how to prevent it are also analyzed.