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首页> 外文期刊>International journal of hydrogen energy >Helium dispersion following release in a 1/4-scale two-car residential garage
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Helium dispersion following release in a 1/4-scale two-car residential garage

机译：在1/4比例的两车位住宅车库中释放后的氦气扩散

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摘要

A series of experiments are described in which helium was released at a constant rate into a 1.5 m × 1.5 m × 0.75 m enclosure designed as a 1/4-scale model of a two-car garage. The purpose was to provide reference datasets for testing and validating computational fluid dynamics (CFD) models and to experimentally characterize the effects of a number of variables on the mixing behavior within an enclosure and the exchange of helium with the outside surroundings. Helium was used as a surrogate for hydrogen, and the total volume released was scaled as the amount that would be released by a typical hydrogen-fueled automobile with a full tank. Temporal profiles of helium were measured at seven vertical locations within the enclosure during and following 1-h and 4-h releases. Idealized vents in one wall sized to provide air exchange rates typical of actual garages were used. The effects of vent size, number, and location were investigated using three different vent combinations. The dependence on leak location was considered by releasing helium at three different points within the enclosure.
机译：描述了一系列实验，其中氦气以恒定速率释放到1.5 m×1.5 m×0.75 m的封闭空间中，该封闭空间设计为两车位车库的1/4比例模型。目的是提供参考数据集，以测试和验证计算流体力学（CFD）模型，并通过实验表征许多变量对外壳内混合行为以及氦与外界环境的交换的影响。氦气用作氢气的替代物，释放的总体积按比例缩放，以表示典型的装有满油箱的氢燃料汽车的释放量。在释放1小时和4小时之后以及之后的7个垂直位置处，测量了氦的时间分布。使用了一堵理想的通风孔，该通风孔的大小可提供典型车库的典型空气交换率。使用三种不同的通风口组合研究了通风口尺寸，数量和位置的影响。通过在外壳内的三个不同点释放氦气来考虑对泄漏位置的依赖性。

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