Simulation Study on Influence of Kitchen Hanging Cabinet on Natural Gas Leakage and Diffusion
Taking the residential kitchens with and without hanging cabinets as the research object,the volume fraction distribution of natural gas leakage and diffusion is simulated and studied.The influence of the hanging cabinet on the diffusion of natural gas is com-pared and analyzed,and the change of methane volume fraction is monitored.The recommendations for the in-stallation location of kitchen alarms with hanging cabi-nets are provided.The existence of the hanging cabinet changes the path of natural gas diffusion,and natural gas accumulates below the cabinets and diffuses to-wards the ceiling along the cabinet.At 60 minutes be-fore the leak,the overall methane volume fraction in the kitchen with a hanging cabinet is higher than that in the kitchen without a hanging cabinet,and the hanging cabinet increases the risk.The natural gas alarm in the kitchen with hanging cabinet should be preferentially mounted on the side of the hanging cabinet closer to the gas facility.When the installation requirements are met,the alarm should be moved down as far as possible to prone leakage locations such as hose joints.The ceiling mounted alarm should be selected at a horizon-tal distance of 25 cm from the hanging cabinet in front of the stove.
kitchen hanging cabinetnatural gas leakage and diffusionnumerical simulationgas a-larm
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