Accession Number : ADA190256

Title :   Comparison of Entropy Generation and Conventional Design Methods for Heat Exchangers.

Descriptive Note : Master's thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF OCEAN ENGINEERING

Personal Author(s) : Herbein, David S

PDF Url : ADA190256

Report Date : Jun 1987

Pagination or Media Count : 65

Abstract : The design of heat exchangers traditionally focuses on the known constraints of the problem such as inlet and outlet temperatures, flow rates, and pressure drops. This leads mainly to a sizing problem where the designer must select surfaces, flow configuration, and materials to meet the minimum design objectives. An alternate approach based on an acceptable level of thermodynamic irreversibility (entropy generation) has been proposed. When the entropy generation level has been set, the geometric parameters of the heat exchanger can be determined. The design of a plate-fin type, gas-to-gas recuperator for a regenerative open Brayton cycle has been used as a demonstrative device. The resulting heat exchanger designs are then examined to determine what caused the differences and why either method should be preferred over the other.

Descriptors :   *ENTROPY, *HEAT EXCHANGERS, BRAYTON CYCLE, COMPARISON, FINS, FLOW, FLOW RATE, GEOMETRY, IRREVERSIBLE PROCESSES, PLATES, REGENERATION(ENGINEERING), THERMODYNAMICS, THESES

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE