Numerical simulation and process control of heat transfer in counterflow heat exchangers.
Tolstykh V.K., Pshenichny K.A
A simplified model for the description of convection, unsteady, one-dimensional heat transfer processes for heat exchangers with counterflow heat transfer fluids is proposed. It contains a model heat transfer coefficient between the heat-transfer agents, which includes both physical heat transfer coefficient, and internal geometrical features of heat exchanger. It is described the finite-difference scheme for calculating thermal processes. Results calculations with the data of industrial heat exchanger for some values of heat transfer coefficient were described. There was formulated a problem of identification of heat transfer coefficient. There was formulated a task of optimal control of the heat exchanger in order to stabilize the temperature regime of operation of the distillation column. Keywords: heat exchanger, identification, optimization, numerical simulation.
