An exhaust heat recovery system utilising thermoelectric generators and heat pipes

Orr, B, Akbarzadeh, A and Lappas, P 2017, 'An exhaust heat recovery system utilising thermoelectric generators and heat pipes', Applied Thermal Engineering, vol. 126, pp. 1185-1190.


Document type: Journal Article
Collection: Journal Articles

Title An exhaust heat recovery system utilising thermoelectric generators and heat pipes
Author(s) Orr, B
Akbarzadeh, A
Lappas, P
Year 2017
Journal name Applied Thermal Engineering
Volume number 126
Start page 1185
End page 1190
Total pages 6
Publisher Elsevier
Abstract Exhaust heat recovery systems are used to make use of otherwise wasted heat from a car engine. The purpose of exhaust heat recovery systems is to potentially reduce the fuel consumption of the car and consequently reduce CO2 emissions and running costs. The system design described herein utilises thermoelectric generators (TEGs) and heat pipes with its key advantage being it is a passive solid state design. The use of heat pipes allows for more flexible designs as the TEG location is not limited to the exhaust pipe surface. Testing was undertaken on a car with a 3.0 L V6 engine. In all test conditions the power loss due to pressure drop in the exhaust duct was always lower than the electrical power output. Repeat tests were conducted and the results were found to be consistent. When testing the system at different orientations, the bottom heat mode was found to be the best option. After all testing, the maximum power output of the system was 38 W from the eight 62 mm X 62 mm TEGs used. The rate of heat transfer in this case was 1541 W with the resultant TEG efficiency being 2.46%. The calculated potential reduction in CO2 emissions, fuel consumption and fuel costs was 1.57%.
Subject Energy Generation, Conversion and Storage Engineering
Keyword(s) Automotive
power generation
thermoelectric generator
heat pipes
DOI - identifier 10.1016/j.applthermaleng.2016.11.019
Copyright notice © 2016 Elsevier B.V. All rights reserved
ISSN 1359-4311
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