A robust method for regenerative heat exchanger calculations

Abstract A stable and accurate closed method for the solution of the differential equations describing thermal regenerator behaviour is discussed. The approach adopted is related to that proposed by Razelos [ Warme- u. Stoffubertr. 12 , 59–71 (1979)], but employs the trapezoidal rule to provide accuracy and, in particular, numerical stability. Details of the new method are described together with its application to a large range of the descriptive parameters.