【摘要】 本文简要回顾了前人对牛奶降膜蒸发传热膜系数的研究成果;在牛奶降膜蒸发实验中,考察了液膜流动、汽相流动、传热条件及牛奶物性等因素对牛奶降膜蒸发传热性能的影响;测定了牛奶降膜蒸发传热膜系数,导出了计算该系数的Nu准数关联式,为牛奶降膜蒸发设备的设计及优化提供了可靠依据。更多还原

【Abstract】 The studies on the heat transfer coefficient of the milk falling-film evaporation by former researchers are briefly reviewed.Effects of liquid film flow, vapor flow, heat transfer conditions and phisical properties of milk on the heat transfer characteristics of the milk falling-film evaporation are investigated The heat transfer coefficients are measured and the Nu number correlation is derived.lt will provide reliable basis for the design and the optimization of the milk falling-film evaporators.更多还原