Premium
Performance Comparison of Different Exhaust Exchanger Types Considering Peak Net Power and Optimal Dimension in a Thermoelectric Generator System
Author(s) -
He Wei,
Wang Shixue
Publication year - 2018
Publication title -
advanced theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.068
H-Index - 17
ISSN - 2513-0390
DOI - 10.1002/adts.201800012
Subject(s) - plate fin heat exchanger , heat exchanger , recuperator , plate heat exchanger , micro heat exchanger , thermoelectric generator , moving bed heat exchanger , fin , heat spreader , mechanical engineering , shell and tube heat exchanger , ntu method , materials science , engineering , thermodynamics , thermoelectric effect , physics
This study introduces a more scientific comparison method to obtain an effective exhaust heat exchanger in a thermoelectric generator (TEG) system when recycling the waste heat from an engine exhaust, and evaluate the performance of different kinds of exhaust heat exchangers. Moreover, the effect of the heat transfer and fluid flow characteristics on the thermoelectric performance and the dimensional optimization characteristics are analyzed. A complete numerical TEG model using the finite element method is formulated with three common plate‐type exhaust heat exchangers (i.e., smooth, offset‐strip fin, and corrugated louvered fin types) taken as examples. The results show that it is more scientific and recommended to evaluate the heat exchanger performance by comparing its maximum net power with its separate optimal heat exchange size taken for different heat exchanger types. In this study, the corrugated louvered fin type has obvious advantages. The dimensional optimization results for different heat exchanger types are also presented herein. The method used and the results obtained provide guidance in achieving an efficient exhaust heat exchanger.