Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental study of effective water spray curtain application in dispersing LNG vapor clouds
The installation of new LNG (liquid natural gas) storage facilities in the US to meet the demand of natural gas has brought increasing attention to LNG safety issues. Because of its highly flammable nature, LNG poses several hazards to workers, properties, and the surrounding communities. One of the major hazards is the formation of a flammable vapour cloud from any accidental LNG release, which may result in a massive fire. The safety measures to prevent and mitigate an accidental LNG release are essential and critical to protect the employees and the public from injury or harm. The water spray curtain is currently recognised as a promising technique to control and mitigate many toxic and flammable vapours. Much theoretical and experimental work has been carried out to determine the effectiveness of the water spray curtain in dispersing heavier vapour. However, LNG vapour dispersion behaves differently from other dense gases due to its low molecular weight and extremely low temperature. In this context, it is essential to carry out research to understand the effects of water curtain on LNG vapour clouds. There have been a very limited number of publications on the use of a water spray curtain to mitigate LNG vapour clouds. These previous studies show that water spray curtains can enhance LNG vapour dispersion from small spills. However, in order to develop comprehensive and structured engineering guidelines for the design of an effective water spray curtain for controlling LNG vapour many key questions still remain to be answered. An experimental methodology to study the LNG vapour dispersion behaviours with the application of water spray curtain is presented in this paper. This field experiment involves the fundamental study of forced dispersion, dilution due to air entrainment, and heat exchange to determine the effectiveness of water spray in reducing the LNG vapour 'exclusion zone'. This paper discusses and outlines the experimental method and some results based on preliminary data analysis to emphasise the observed effectiveness of water spray curtain on LNG vapour dispersion.
Experimental study of effective water spray curtain application in dispersing LNG vapor clouds
The installation of new LNG (liquid natural gas) storage facilities in the US to meet the demand of natural gas has brought increasing attention to LNG safety issues. Because of its highly flammable nature, LNG poses several hazards to workers, properties, and the surrounding communities. One of the major hazards is the formation of a flammable vapour cloud from any accidental LNG release, which may result in a massive fire. The safety measures to prevent and mitigate an accidental LNG release are essential and critical to protect the employees and the public from injury or harm. The water spray curtain is currently recognised as a promising technique to control and mitigate many toxic and flammable vapours. Much theoretical and experimental work has been carried out to determine the effectiveness of the water spray curtain in dispersing heavier vapour. However, LNG vapour dispersion behaves differently from other dense gases due to its low molecular weight and extremely low temperature. In this context, it is essential to carry out research to understand the effects of water curtain on LNG vapour clouds. There have been a very limited number of publications on the use of a water spray curtain to mitigate LNG vapour clouds. These previous studies show that water spray curtains can enhance LNG vapour dispersion from small spills. However, in order to develop comprehensive and structured engineering guidelines for the design of an effective water spray curtain for controlling LNG vapour many key questions still remain to be answered. An experimental methodology to study the LNG vapour dispersion behaviours with the application of water spray curtain is presented in this paper. This field experiment involves the fundamental study of forced dispersion, dilution due to air entrainment, and heat exchange to determine the effectiveness of water spray in reducing the LNG vapour 'exclusion zone'. This paper discusses and outlines the experimental method and some results based on preliminary data analysis to emphasise the observed effectiveness of water spray curtain on LNG vapour dispersion.
Experimental study of effective water spray curtain application in dispersing LNG vapor clouds
Rana, Morshed A. (Autor:in)
2008
22 Seiten, 2 Bilder, 18 Tabellen, 16 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Use of water spray curtain to disperse LNG vapor clouds
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