Accession Number : AD0689420

Title :   OPTIMAL WALL TEMPERATURE CONTROL OF A HEAT EXCHANGER,

Corporate Author : KANSAS STATE UNIV MANHATTAN INST FOR SYSTEMS DESIGN AND OPTIMIZATION

Personal Author(s) : Huang,Harng-Sen ; Fan,L. T. ; Hwang,C. L.

Report Date : 25 JUN 1969

Pagination or Media Count : 44

Abstract : An optimal wall temperature control of a single-duct heat exchanger is studied. The wall temperature which is the control variable is assumed to be uniform in space but a function of time. The system considered is a distributed parameter system where the fluid temperature is a function of time and a spatial coordinate. The control is to force optimally the temperature profile of the fluid from the initial state to a new desired steady temperature profile in a finite time. Two different performance indexes are considered. One is the integral of the absolute deviation of the system temperature profile at any moment from the new desired steady state profile. Both are to be minimized. Optimal solutions are obtained by two methods, namely, linear programming and a variational technique. (Author)

Descriptors :   (*HEAT EXCHANGERS, *TEMPERATURE CONTROL), LINEAR PROGRAMMING, PARTIAL DIFFERENTIAL EQUATIONS, CONTROL SYSTEMS, HEAT TRANSFER, OPTIMIZATION

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE