Study on Heat and Mass Transfer Characteristics of Falling Film in Steel Tube Closed Tower
The cooling tower can discharge the heat of high temperature medium from the system to the atmosphere through heat and mass exchange,so as to achieve the cooling effect.In this paper,the steel tube closed cooling tower horizontal circular tube falling film evaporator heat and qualitative research and analysis of the factors which influence building counter-flow closed tower horizontal circular tube falling film heat and mass transfer performance study visualization test bench,the main research air velocity,the density of spray,spray water temperature on the horizontal tube falling film evaporation heat transfer and mass transfer performance.Under the given experimental conditions,the optimal spray density is 0.0416 kg/(m·s),and the corresponding maximum total heat transfer coefficient is 1625.01 W/(m2·K).When the optimal spray water temperature is 16.82℃,the corresponding maximum total heat transfer coefficient is 1736.86 W/(m2·K).The optimal airflow speed is between 1～2 m/s.
steel tube closed towerheat and mass transfercounter-current airflow
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