| In the current society,the contradiction between energy supply and energy demand,energy utilization and environmental protection,modern lifestyle and energy saving and emission reduction has become the focus of national energy policy reform.With the strengthening of national environmental protection efforts and the continuous promotion of clean heating policies,the gas penetration rate of residents in some urban areas even has reached 100%.At the same time,the contradiction between urban population and housing shortage is becoming increasingly apparent.In the environment,the advantage of open kitchen housing of improving space utilization is increasingly obvious.At the same time,open kitchen houses with beautiful,atmospheric and fashionable characteristics are more and more popular under the background of the fusion of Chinese and Western cultures and the gradual changes in domestic eating habits.However,due to the relatively short period of time for the introduction of open kitchens in China,there is a lack of effective safety protection measures and scientific and reliable standards for the use of gas in open kitchens.Therefore,this article aims to find safety protection measures that can reduce the incidence of accidents in open kitchen residences,hopes to provide safety guarantee for the use of gas in open kitchen residences in China and provides a theoretical basis for the formulation of its specifications.First,under the background that the open kitchen residences have become the trend of the times,the paper studies and analyzes the current status of the use of natural gas and gas leakage in the open kitchen house at home and abroad.Secondly,based on the composition of the indoor gas system of the resident user and the gas accidents that occurred in recent years,the causes and hazards of the accidents were discussed;Thirdly,this paper conducts the theoretical analysis of the leakage of the open kitchen gas stove hole,and discusses its diffusion principle and calculation method of leakage.And this article takes a real open kitchen house in a certain area as the research object,uses FLUENT software to numerically simulate the natural gas leakage of the gas stove in the house,and obtains the diffusion distribution of natural gas from the stove hole jet to the indoor air.Finally,on the basis of the above simulation,three protective measures that can be used to improve the safety of gas used in open kitchen residences were discussed,including the addition of 20,30,and 40 cm partition walls between the kitchen and the living room.Through research and analysis of the influence of the partition wall on the diffusion of natural gas after leaking from the small hole,it is concluded that a partition wall that meets a certain height can indeed delay the diffusion time of natural gas from the kitchen to the living room,but the height of the partition wall and its delaying ability are not in a single proportional relationship.In the model,the partition wall with a height of 30 cm has the best obstruction effect.In this paper,the indoor water level of different heights is selected as the natural gas concentration detection surface.It is learned that in a closed environment,only the doors and windows are ventilated,the height of 2-2.6 meters is suitable for the installation height of the wall-mounted gas alarm.Considering that the ventilation has the effect of diluting the indoor natural gas and promoting the gas flow,the article discusses the diffusion law of indoor natural gas when the outside natural wind blows into the room from the kitchen side window at different wind speeds.It is learned that the external wind speed is inversely proportional to the indoor natural gas concentration.The greater the wind speed,the more obvious the effect of wind on natural gas. |
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