热管式降膜吸收器的传热传质

Heat and Mass Transfer Process in Heat Pipe Type Falling Film Absorber

对热管式降膜吸收器溶液吸收传热传质并通过热管移出吸收热的过程进行了数值研究。根据所建立的数学模型，通过求解热管加热段外壁面溶液波动降膜的动态二维偏微分方程和热管传热方程，研究了膜雷诺数、低位余热温度、输出热温度等因素对传热传质过程的影响。对进一步工作提出了新的见解。

A numerical analysis of the heat and mass transfer in a heat pipe type falling film absorber was carried out, in which solution absorption and removal of absorption heat happened through heat pipe. The effects of film Reynolds number, temperatures in both low grade stream and outlet stream on heat and mass transfer were studied based on the mathematic model. The model consisted of dynamic biaxial partial differential equations for wavy solution film along the outside wall of heating section of the heat pipe as well as the heat transfer equations of the heat pipe.