ANALYSES OF LPG DISPERSION DURING ITS ACCIDENTAL RELEASE IN ENCLOSED CAR PARKS
ANALYSES OF LPG DISPERSION DURING ITS ACCIDENTAL RELEASE IN ENCLOSED CAR PARKS
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DOI：
10.1515/eces-2017-0017
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发表时间：
2017-06-01
影响因子：
1.9
通讯作者：
Markowski, Adam S.
中科院分区：
文献类型：
--
作者：
Brzezinska, Dorota;Dziubinski, Marek;Markowski, Adam S.
虽然很多汽车都使用石油气，但当局仍未进行测试，以确定汽车停泊在密封式车房内时，所释出的石油气会造成多大的危险。这个问题适用于公共和工业停车场，特别是在波兰，那里超过10%的汽车由液化石油气燃料。本文介绍了全面的实验，证明条件下，可能会发生在一个车库中的意外液化石油气释放的汽车安装。在测试过程中，进行了一系列的六个液化石油气泄漏测试，以研究排放时间和易燃云的形成取决于意外间隙直径。此外，为了能够目视观察气体扩散和通风系统的影响，使用由干冰产生的可见的CO2气云进行实验。实验表明，封闭式汽车库在不通风的情况下，液化石油气会在地面上长期积聚，产生高度爆炸危险。然而，良好的通风（特别是喷气式风扇系统）可以迅速消除危险的易燃LPG云。此外，对于有效的液化石油气检测来说，非常重要的是检测器的位置比目前推荐的更接近地面-高度为30 cm。
Despite the fact that LPG (Liquefied Petroleum Gas) is used in a large number of cars, tests have not yet been carried out to ascertain how hazardous can be the release of LPG from the car when parked in enclosed garages. The problem applies to both public and industrial parking areas, especially in Poland, where more than 10% cars are fueled by LPG. The paper describes full scale experiments, which demonstrate conditions that may occur in a garage in the event of accidental LPG release from the car installation. Over the course of the tests, a series of six LPG spillage tests were performed to study emission time and flammable cloud formation depending on the accidental gap diameter. Additionally, to enable the visual observation of the gas dispersion and influence of the ventilation system the experiment was conducted using well visible CO2 gas cloud, produced from dry ice. The experiments have shown that without ventilation LPG can accumulate on the floor of the enclosed garage for a long time, which generates a high explosive hazard. However, good ventilation (especially jet fan systems) can quickly remove hazardous flammable LPG clouds. Moreover, very important for effective LPG detection is the location of detectors closer to the floor than is currently recommended - at a height of 30 cm.