点击次数：

发表时间：2018-01-01

发表刊物：流体机械

卷号：46

期号：6

页面范围：55-59,54

ISSN号：1005-0329

摘要：In order to research the heat transfer characteristics of falling film evaporator,experimental research was carried out on heat transfer characteristics of R113 falling film evaporation in a vertical tube in the range of test parameters,i.e.,at the inlet mass flowrate of 0.121～0.0225 kg/s and heat flux of 1.02～3.35 kW/m2.The results show that the mass flow rate of the outlet steam is closely related to the heat flux.With the increase of heat flux,the mass flow rate of the outlet steam increases gradually;Heat transfer coefficient increases first and then decreases with the increase of inlet mass flow rate;By increasing the inlet mass flow,the heat transfer can be enhanced within a certain range;Under relatively small inlet mass flow rate,increasing heat flux is unfavorable to heat exchange. For relatively large inlet mass flow rate,the heat transfer coefficient increases first and then decreases with the increase of heat flux. There is a critical value at which falling film evaporation has the best heat transfer effect.

备注：新增回溯数据