The design model of seawater desalination with the tvc falling - film evaporation process was deduced . the transfer coefficient of falling - film evaporation process was analyzed in detail . and the effect of the parameter change of process steam to the operation of the device was calculated and discussed 本文主要开展tvc压缩蒸馏海水淡化技术研究，建立了tvc压缩喷淋降膜蒸馏海水淡化装置的设计模型，对降膜蒸发过程的传热系数进行了详细的分析，并对工作蒸汽参数变化对装置运行的影响进行了分析计算。
