Performance factors of a periodic-flow heat exchanger.
Lambertson, Tomme J.
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The differential equations and boundary conditions describing the periodic-flow heat exchanger (frequently referred to as rotary regenerator) are sufficiently complicated to preclude complete analytical solution. Because of the interest in this type of heat exchanger considerable effort has been expended to obtain useful solutions to the analytical problem of predicting its performance. Several approximate solutions have been proposed but each of these Is limited due to the restricted ranges of parameters in which they apply. A numerical finite-difference method of calculating the spatial temperature distribution in the periodic -flow type heat exchanger is presented by considering the metal "stream" in cross -flow with each of the fluid streams as two separate but dependent exchangers. In the development no assumptions are made which would restrict the range of parameters in which the analysis would be applicable.
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