In　order　to　greatly　reduce　the　energy　consumption　of　fruit　juice　concentration　process,　a　general　mathematical　model　of　countercurrent　multiple　effect　evaporation　(MEE)　system　contains　various　energy　saving　measures　simultaneously　(such　as　steam　jet　heat　pump　technology,　solution　flash　and　condensed　water　flash)　is　established　in　this　paper.　The　systematic　material　balance　equations　and　heat　balance　equations　are　described　as　the　form　of　matrix　equation　to　realize　the　generality　of　this　model.　The　general　model　can　be　simplified　to　a　countercurrent　multi-effect　evaporation　model　contains　several　or　none　energy　saving　measures　and　it　can　achieve　the　function　of　pumping　steam　at　any　effect.　The　model　is　solved　by　matrix　method　combining　with　iteration　method,　which　has　advantages　of　less　sensitive　to　initial　values,　high　convergence　speed　and　stability.　The　developed　model　is　used　to　simulate　the　fruit　juice　concentration　process　under　different　operating　strategies.　The　simulation　results　indicate　that　heat　pump　is　an　effective　energy　saving　measure　in　countercurrent　MEE　system.　The　larger　values　of　ejection　coefficient　and　effect　for　pumping,　the　more　fresh　steam　consumption　saves　and　heat　transfer　area　increases　when　some　constraint　conditions　are　satisfied.　After　combining　condensed　water　flash　and　solution　flash,　it　achieves　a　more　pronounced　effect.　(C)　2014　Elsevier　Ltd.　All　rights　reserved.