Multi-effect evaporation(MEE)is the most important and the most widely used method in the fruit juice concentration process.But the cost of production is also very high.In order to greatly reduce the tatal cost and enhance the economic benefit of enterprise,the following aspects have been studied in this paper.Firstly,a general and rigorous mathematical model is developed for a MEE system that includes various energy reduction schemes.These energy reduction schemes are thermal vapor compression,vapor bleedi...