Accidents related to gas cooking are quite common especially in Asian countries. In the present study, the models for the leakage and diffusion of natural gas in a typical sized kitchen have been established along with experimental validation. The results show that the larger the outlet area, the less the flammable zone. Also the time for gas concentration distribution tending to become shorter for steady state and gas density gradient on vertical elastic becomes smaller. In the condition when the door is half opened, it takes 25 minutes to reach a stable maximum concentration at the central point of the kitchen and the spaces above 0.8m in the kitchen are full of explosive gas. It has been found that the lower location of leaking source led to the larger flammable zone. Window ventilation can reduce the gas cumulating in the kitchen significantly. When the window is opened to 0.03 m2 areas, and the speed of inlet ventilation reaches to 2 m/s, there is almost no flammable zone in the kitchen. On the other hand, the leaking location can affect the concentration distribution and explosive volume as well, hence, it is necessary to determine a safer installation position for the gas pipe.
|Journal||International Journal of Frontier in Technology|
|Publication status||Published - 2015|