Analysis of heat transfer( Contd Energy balance gives: dqe = dqn dq For the entire flow length h a convenient way to compute the heat transfer is from the mean temperature difference between the hot and cold fluids q=UA△Tm △T Next Evaluation of ATm different for parallel and counter flow Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 11 Analysis of heat transfer (Cont’d) • Energy balance gives: • For the entire flow length • A convenient way to compute the heat transfer is from the mean temperature difference between the hot and cold fluids • Next: Evaluation of Tm different for parallel and counter flow dqc = dqh = dq q =UATm T = Th −Tc dq = Cc dTc = −Ch dTh