摘要
Abstract
This paper utilizes Fluent 17.0 as the computational platform to study the combustion and heat transfer characteristics of coal-water slurry in a domestic small-scale steam boiler through numerical simulation methods.A three-dimensional physical model of the boiler furnace was constructed using Gambit 2.4,and a hexahedral structured mesh was applied to the computational domain.Based on Fluent 17.0,and considering the atomization characteristics of coal-water slurry and the heat absorption of water vaporization,this study thoroughly investigates the effects of variations in the preheating temperature of combustion-supporting air on the combustion of coal-water slurry within the furnace,temperature distribution in the furnace,and heat transfer to the water-cooled walls.The results show that with the combustion-supporting air preheated to 753°C,coal-water slurry can achieve efficient combustion in this boiler furnace,also reaching a higher level of energy utilization.关键词
水煤浆/燃烧/锅炉/传热特性Key words
coal-water slurry/combustion technology/boiler retrofit/heat transfer characteristics分类
能源科技
