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首页> 外文期刊>International Journal of Environmental Research and Public Health >LPG Cars in a Car Park Environment—How to Make It Safe
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LPG Cars in a Car Park Environment—How to Make It Safe

机译：停车场环境中的液化石油气汽车-如何使其安全

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摘要

Alternative and innovative fuel types are being introduced to power cars. These include liquified petroleum gas (LPG) gas and hydrogen energy sources. However, they also introduce new hazards, requiring revised thinking with respect to safety within car parking environments. One of the most significant dangers is accidental gas release from a car’s system, especially in underground car parks. Jet fan systems are widely used for ventilation of such enclosures, but currently their design is most often based on computational fluid dynamics (CFD) according to computer simulations that may not be relevant for such new fuels. This paper presents the results of full-scale tests which demonstrate the operational factors of jet fan ventilation systems, and assesses the conditions which can occur in a car park when a small volume of LPG is released. On the basis of measurements undertaken, Fire Dynamics Simulator (FDS) software was validated against the air velocity flows and LPG gas dispersion patterns. Finally, the simulations were used to demonstrate the effectiveness of systems in an actual car park, in the case of an accidental LPG car tank release.
机译：替代和创新燃料类型正在引入动力汽车。这些包括液化石油气（LPG）气体和氢气能源。但是，它们也带来了新的危险，需要对停车场环境中的安全性进行重新思考。最重大的危险之一是汽车系统意外释放出的气体，尤其是在地下停车场。射流风扇系统被广泛用于这种外壳的通风，但是目前，根据计算机模拟，其设计通常基于计算流体力学（CFD），而计算机模拟可能与这种新燃料无关。本文提供了全面测试的结果，这些测试证明了喷气风扇通风系统的运行因素，并评估了释放少量LPG时在停车场可能发生的状况。在进行测量的基础上，针对空气流速和LPG气体扩散模式对Fire Dynamics Simulator（FDS）软件进行了验证。最后，在液化石油气汽车油箱意外泄漏的情况下，通过仿真证明了该系统在实际停车场中的有效性。

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