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首页> 外文期刊>International Journal of Refrigeration >Full-scale experiment to evaluate the combustion hazard of refrigerants with low global-warming potential in a conceivable accident scenario
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Full-scale experiment to evaluate the combustion hazard of refrigerants with low global-warming potential in a conceivable accident scenario

机译：全面实验，评价可想到的事故情景中具有低全球变暖潜力的制冷剂的燃烧危险

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摘要

A full-scale experiment based on a realistic foreseeable leak accident scenario was conducted with two refrigerants with low global-warming potential (GWP). The assumed accident scenario was that of the leakage of low-GWP refrigerant from a variable-refrigerant-flow air-conditioning system into a general narrow karaoke space, with an open flame present in the region where the low-GWP refrigerant accumulated. Even in the absence of mechanical ventilation, neither ignition nor flame propagation occurred if the amount of "LFL equivalent", that the calculated interior concentration corresponded to the lower flammable limit, was leaked and mixed sufficiently. Even when the leak amount was "UFL equivalent", that the calculated interior concentration corresponded to the upper flammable limit, ignition and flame propagation could be prevented by means of a suitable ventilation system. The maximum pressure rise was 4-6 kPa. Finally, no transition from laminar combustion to turbulent combustion was observed. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
机译：基于现实可预见的泄漏事故情景的全规模实验用两种具有低全球变暖潜力（GWP）的制冷剂进行。假设的事故情景是低GWP制冷剂从可变制冷剂流量空调系统泄漏到一般窄卡拉OK空间中，在累积的低GWP制冷剂的区域中存在开放的火焰。即使在没有机械通气的情况下，如果计算出的易燃极限相对应的内部浓度，既不发生火焰也不会发生火焰繁殖，并且充分地泄露并混合。即使当泄漏量为“UFL等价”时，也可以通过合适的通风系统防止计算的内部浓度对应于上易燃限度，点火和火焰传播。最大压力升高为4-6kPa。最后，观察到没有从层流燃烧到湍流燃烧的过渡。 （c）2017年Elsevier Ltd和IIR。版权所有。

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