Factors Influencing the Rate of Heat Transfer in a Falling Film Evaporator

Download or read book Factors Influencing the Rate of Heat Transfer in a Falling Film Evaporator written by Michael J. Doyle and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concentration of liquid food is an important unit operation for the food industry and the falling film evaporator is widely used for this purpose. The purpose of this project was to study the factors which influence the rate of heat transfer in a falling film evaporator including feed flowrate, product boiling point, temperature difference between the heating medium and product, and the preheating conditions. It was found that the rate of heat transfer increased with a decrease in product boiling point, while preheat conditions had little influence on the heat transfer rate. Experimental data are presented in the form Nu = 0.0091 Re0.38Pr0.8.