自然循环型气液固三相流载气蒸发传热的实验研究  

HEAT TRANSFER OF GAS CARRYING EVAPORATION WITH FLUIDIZED SOLID PARTICLES

作　　者：于志家[1] 罗丽华[1] 张远树 徐维勤[1] 沈自求[1] 

机构地区：[1]大连理工大学化学工程研究所,大连116012

出　　处：《工程热物理学报》1998年第4期484-487,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：Experimental study was carried out of heat transfer of the Gas Carrying Evaportion with fluidized solid particles in a vertical annulus. The annulus consists of an electrical heating bar and an outer glass tube. Air was adopted as the carrying gas. Water and aqueous solutions of carboxyl methyl cellulose were used as the working liquids. Solid particles were ceramic beads and glass beads of different diameter. The experimental results showed that the liquid flow boiling heat transfer was increased and the superheat of liquid at heating surface lowered remarkably by the introduction of the carrying gas and the fluidized solid pericles. The heat transfer augmentation became weaker as the liquid viscosity icreased.Experimental data of the heat transfer were correlated.Experimental study was carried out of heat transfer of the Gas Carrying Evaportion with fluidized solid particles in a vertical annulus. The annulus consists of an electrical heating bar and an outer glass tube. Air was adopted as the carrying gas. Water and aqueous solutions of carboxyl methyl cellulose were used as the working liquids. Solid particles were ceramic beads and glass beads of different diameter. The experimental results showed that the liquid flow boiling heat transfer was increased and the superheat of liquid at heating surface lowered remarkably by the introduction of the carrying gas and the fluidized solid pericles. The heat transfer augmentation became weaker as the liquid viscosity icreased.Experimental data of the heat transfer were correlated.

关 键 词：蒸发 传热 三相流 自然循环 

分 类 号：TK124[动力工程及工程热物理—工程热物理]