Performance Analysis Of Smoke Exhaust System In Engine Room Of Sea Life Platform

This paper aims at the current status of no design reference specification for the cabin exhaust system of Sea life platform.Using the fire simulation software to explore the feasibility of the current design specification for architectural use to design cabin exhaust system for Sea life platform.This article first determines the amount of exhaust air needed for daily ventilation,the amount of smoke exhausted in the high-rise civil building design fire protection code,and the amount of smoke exhausted in the technical regulations for building smoke prevention and control,and sets four types of fire source power,two The method of exhausting smoke and the arrangement height of two kinds of exhaust outlets.Afterwards,a numerical simulation calculation was carried out using the fire dynamics simulation software FDS for each operating condition.Through the discussion of the three types of smoke exhaust conditions determined by different specifications,we can obtain that when the design fire source power is less than 3MW,daily ventilation and dehumidification system can be used as the design of cabin exhaust system;when the design fire source power is greater than 3MW but less than 6MW,the current "Code for Fire Protection Design of High-Rise Civil Buildings" can be used as a design reference for the cabin exhaust system;and when the design fire source power is more than 6MW,the current "Technical Regulations for Smoke Prevention and Exhaust Design of Buildings" should be referred to design.Through the discussion of the two types of smoke exhaust in the cabin,it is obtained that when the design fire source power is less than 3MW,the top suction smoke exhaust mode should be adopted;when the design fire source power is greater than 3MW,the side suction smoke exhaust mode should be adopted.Through the discussion of the heights of different smoke vents,it can be concluded that raising the height of the smoke vents is conducive to enhancing the effect of smoke extraction.The results show that under the scope of this study,the effect of the height of the exhaust outlet under the two smoke exhaust modes has different effects on the smoke exhaust performance.The exhaust smoke performance of the top suction smoke exhaust mode is less sensitive to the height of the smoke exhaust port than the side.The smoke extraction performance of the smoke exhaust system improves the height of the smoke outlet.