Heat Exchangers. NTU-8 Method Where we’ ve been∴ Analysis of heat exchangers using log mean temperature difference (LMTD) q=y ATour -At i UA△TLMD Tr △T △T △D Where were going Computation of heat exchanger performance compared to the theoretical maximum possible for the flow conditions and hX type and size Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 2 Heat Exchangers, NTU- Method Where we’ve been …… • Analysis of heat exchangers using log mean temperature difference (LMTD) Where we’re going: • Computation of heat exchanger performance compared to the theoretical maximum possible for the flow conditions and HX type and size. LMTD i o out in UA T T T T T q UA =     −  = ln dq Ti To h dTc dT T