QUALITATIVELY RELIABLE COMPARTMENTAL MODELS FOR DOUBLE-PIPE HEAT EXCHANGERS

摘要

In this work, the analytical properties of the heat exchanger infinite-dimensional dynamic model are discussed. More importantly, those of a 2nd order lumped-parameter model using the LMTD as driving force are derived and shown to agree with those of the former. These results are intended to support those works based on simple compartmental models, where it is not the quantitative solutions but the qualitative behavior that is important, like modelling and simulation of heat exchanger networks and complex industrial processes where heat exchangers are involved in.