Abstract
High-power-density, segmented, thermoelectric (TE) elements have been intimately integrated into heat exchangers, eliminating many of the loss mechanisms of conventional TE assemblies, including the ceramic electrical isolation layer. Numerical models comprising simultaneously solved, nonlinear, energy balance equations have been created to simulate these novel architectures. Both steady-state and transient models have been created in a MATLAB/Simulink environment. The models predict data from experiments in various configurations and applications over a broad range of temperature, flow, and current conditions for power produced, efficiency, and a variety of other important outputs. Using the validated models, devices and systems are optimized using advanced multiparameter optimization techniques. Devices optimized for particular steady-state operating conditions can then be dynamically simulated in a transient operating model. The transient model can simulate a variety of operating conditions including automotive and truck drive cycles.
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Abbreviations
- A :
-
Area (m2)
- C p :
-
Specific heat (J/kg K)
- h :
-
Heat transfer coefficient (W/m2 K)
- I :
-
Electrical current (A)
- K :
-
Thermal conductance (W/K)
- m :
-
Mass (kg)
- Q :
-
Heat flow (W)
- R :
-
Electrical resistance (Ω)
- t :
-
Time (s)
- T :
-
Temperature (K)
- u :
-
Reduced current density
- U :
-
Overall heat transfer coefficient (W/m2 K)
- 1, 2, 3:
-
Location on the TEG/control volume in the direction of flow
- c:
-
Cold
- cen:
-
Center of
- ch:
-
Channel
- conn:
-
Connector
- cross:
-
Cross-sectional
- f:
-
Fluid
- h:
-
Hot
- int:
-
Interfacial
- load:
-
Load
- nat:
-
Natural convection
- s:
-
Surface
- TE:
-
Thermoelectric
- α :
-
Seebeck coefficient
- Δ, d:
-
Change in
- ∞:
-
Ambient
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Crane, D.T. An Introduction to System-Level, Steady-State and Transient Modeling and Optimization of High-Power-Density Thermoelectric Generator Devices Made of Segmented Thermoelectric Elements. J. Electron. Mater. 40, 561–569 (2011). https://doi.org/10.1007/s11664-010-1451-6
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DOI: https://doi.org/10.1007/s11664-010-1451-6