Enhanced Heat Transfer Characteristics And
Performance Of Composite Thermoelectric
Devices
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WIT Transactions on Engineering Sciences
Advanced Computational Methods and Experiments in Heat Transfer XII
Enhanced Heat Transfer Characteristics And
Performance Of Composite Thermoelectric
Devices
Related conference
BEM/MRM 47
25-27 September 2024
Seville, Spain
Related Book
Advanced Computational Methods and Experiments in Heat Transfer XII
Edited By: B. Sundén, Lund University, Sweden; C.A. Brebbia, Wessex Institute of Technology, UK; D. Poljak, University of Split, Croatia
Enhanced Heat Transfer Characteristics And
Performance Of Composite Thermoelectric
Devices
Price
Free (open access)
Transaction
WIT Transactions on Engineering Sciences
Volume
75
Pages
12
Page Range
15 - 26
Published
2012
Size
741 kb
Paper DOI
10.2495/HT120021
WIT Press
Author(s)
M. K. Chyu, B. V. K. Reddy, M. Barry & J. Li
Abstract
Thermoelectric elements made of semiconductor slices layered onto highly
conducting inter-connector materials are termed as Composite Thermoelectric
Device (CTED). An integrated TED (iTED) is a CTED with flow channels
drilled through an inter-connector, it acts as a heat exchanger, directing the heat
transfer between the fluid stream and element legs. In this work, thermoelectric
performance of such elements in terms of power output P0, heat input Qh,
conversion efficiency η, electric current and Ohmic and Seebeck voltages for
various hot surface temperatures Th, load resistances RL and semiconductor slice
sizes d has been investigated using both analytical and numerical methods. The
thermoelectric performance of CTED has been compared with a geometrically
equivalent conventional TED element. For an optimum load resistance RoptmL, an
increase in Th showed a substantial increase in P0 and a minor increase in Qh. At
Th = 550K and 350 K, the optimum η for CTED, 11% and 9% respectively lesser
and nearly four-fold increase in P0 as compared to the conventional TED is
observed. The semiconductor slice size d has a significant effect on the CTED
performance: an observed increase in both P0 and Qh and decrease in η is a result
of decreasing d. At fixed d = 5 mm and hot stream inlet temperature (450 K)
values, the single-stage iTED showed five-times in P0 and two-fold in η for a
flow rate Re = 500 compared to the values at Re = 100. These novel TEDs help
extract larger amounts of waste heat, reduce thermal stresses and minimize
semiconductor material usage as compared to conventional TEDs.
Keywords: thermoelectrics, waste heat recovery, conventional, composite,
integrate, analytical solutions, numerical methods, conversion efficiency, power
output, voltage, current.
Keywords
thermoelectrics, waste heat recovery, conventional, composite,
integrate, analytical solutions, numerical methods, conversion efficiency, power
output, voltage, current.
Related conference
BEM/MRM 47
25-27 September 2024
Seville, Spain
Related Book
Advanced Computational Methods and Experiments in Heat Transfer XII
Edited By: B. Sundén, Lund University, Sweden; C.A. Brebbia, Wessex Institute of Technology, UK; D. Poljak, University of Split, Croatia
Other papers in this volume
The Effect Of Heat Transfer On The Polarizations
Within An Intermediate Temperature Solid Oxide
Fuel Cell
Enhanced Heat Transfer Characteristics And
Performance Of Composite Thermoelectric
Devices
Numerical Study Of The Flow Inside An
Alternator: Application To The Thermal
Optimization Of The Machine
Thermal Invisibility Through Geometrical
Transformation: A Segmented Cloaking
Approach
Offset Strip Fin Nanocomposite Polymer Heat
Exchanger Development
Numerical Simulation Of Solar Chimney
Integrated With Exhaust Of Thermal Power Plant
Experimental Study Of Cold Inflow And
Its Effect On Draft Of A Chimney
Keep me updated
View Book
Other papers in this volume
The Effect Of Heat Transfer On The Polarizations
Within An Intermediate Temperature Solid Oxide
Fuel Cell
Enhanced Heat Transfer Characteristics And
Performance Of Composite Thermoelectric
Devices
Numerical Study Of The Flow Inside An
Alternator: Application To The Thermal
Optimization Of The Machine
Thermal Invisibility Through Geometrical
Transformation: A Segmented Cloaking
Approach
Offset Strip Fin Nanocomposite Polymer Heat
Exchanger Development
Numerical Simulation Of Solar Chimney
Integrated With Exhaust Of Thermal Power Plant
Experimental Study Of Cold Inflow And
Its Effect On Draft Of A Chimney
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