氨制冷站设备布置及通风模拟

为了研究制冷站氨压缩机发生泄漏时,设备摆放位置不同情况下,近地面氨气浓度始终在IDLH（立即威胁生命和健康浓度）以下的最小事故排风量,同时针对制冷站机械进风口最佳的进风高度及进风量等问题进行研究,保证站房内工作人员人身安全.采用Fluent数值模拟方法,建立了制冷站氨压缩机泄漏模型,通过数据处理,给出了适用于制冷站的设备布置方式及事故排风量.模拟结果得出：制冷站内设备应尽量布置在站房中部,机械进风机进风口下边缘高度保持在1～1.5m且不应大于2.5m,为制冷站的制冷设备的安装位置、事故排风机选型及机械进风机安装高度提供依据.

The Arrangement of Ammonia Refrigeration Station and Ventilation Simulation

Based on the minimum exhaust accident research about making sure the ammonia concentration is un- der IDLH（ immediately dangerous to life or health concentration）when the refrigeration station＇s ammonia compressor is leaking and quanti by putting the equipment onto different places. At the same time, it discussed the wind path＇s best height ty of into-wind, on the refrigeration machine, to safe the staff working inside. Built up a refrigeration station＇s ammonia compressor leaking model by the way of Fluent numerical simulation. It tells the method of putting re- frigeration station＇s equipment and the quantity of exhausting air accident by dealing with data information. The result is that the Refrigeration equipment should be put in the middle of the Station, the down-edge of the wind path ＇ s into- wind should keep within 1 to 1.5 m and no more than 2. 5 m. It also provides evident for installing of refrigeration sta- tion＇s machine, selecting accident exhaust fan and the height of into-wind machine＇s install.