ISOTERMAS DE ADSORCIÓN Y DESORCIÓN DE AGUA EN LECHE EN POLVO: II. LECHE ENTERA
The aim of this research was the determination of adsorption and desorption isotherms of cow whole milk powder. The experiments have been carried out at 15, 25 and 40 oC, in ranges of moisture and water activity characteristic of normal conditions in which the processes of drying, packaging and storage are developed. By studying the influence of the temperature on the experimental plots, the isosteric adsorption heat was determined. Experimental data were correlated to the referential model of Guggenheim, Anderson and Boer (GAB). For both, adsorption and desorption, a good model fit was observed. The isotherms showed very similar shapes between them and, by comparing adsorption and desorption isotherms, the phenomenon of hysteresis was confirmed.
According to the numerical products of meso-scale numerical model MM5 and its application of products,some special products which are suitable for rain-making scheme design were obtained at several forecasting times,including isothermal height,isothermal stream,isothermal water vapor,cloud ceiling,cloud top height,cloud water mixing ratio,etc.A website was built to serve the rain-making with these products.All these efforts gained positive effects in rain-making.