Absorption　heat　transformer　(AHT)　and　flash　evaporator　(FE)　are　used　to　reduce　the　heat　consumption　of　CO2　capture　processes　and　an　AHT-FE-aided　capture　system　is　proposed.　Analyses　are　carried　out　to　verify　the　effectiveness　in　reducing　heat　consumption.　Compared　with　the　base　CO2　capture　system　of　3000　t/d　CO2　capture　capacity　from　a　660　MW　coal-fired　power　unit,　the　AHT-FE-aided　capture　system　reduces　the　heat　consumption　from　3.873　GJ/tCO(2)　to　3.772　GJ/tCO(2),　and　the　corresponding　energy　saving　is　2.62%.　The　economic　analysis　shows　that　the　annual　profit　would　be　2.94　million　RMB　Yuan.　The　payback　period　of　the　AHT-FE-aided　capture　system　is　approximately　2.4　years.　Therefore,　the　AHT-FE-aided　capture　system　is　both　economically　and　technically　feasible　for　improving　the　CO2　capture　energy　performance.　(C)　2013　Elsevier　Ltd.　All　rights　reserved.