Journal of Electronic Materials

, Volume 38, Issue 7, pp 1206–1213

Modeling Energy Recovery Using Thermoelectric Conversion Integrated with an Organic Rankine Bottoming Cycle

  • Erik W. Miller
  • Terry J. Hendricks
  • Richard B. Peterson
Article

DOI: 10.1007/s11664-009-0743-1

Cite this article as:
Miller, E.W., Hendricks, T.J. & Peterson, R.B. Journal of Elec Materi (2009) 38: 1206. doi:10.1007/s11664-009-0743-1

Engine and industrial waste heat are sources of high-grade thermal energy that can potentially be utilized. This paper describes a model system that employs thermoelectric conversion as a topping cycle integrated with an organic Rankine bottoming cycle. The model has many parameters that define combined system quantities such as overall output power and conversion efficiency. The model can identify the optimal performance points for both the thermoelectric and organic Rankine bottoming cycle. Key analysis results are presented showing the impact of critical design parameters on power output and system performance.

Keywords

Waste heat recovery thermoelectric generator Rankine cycle 

Nomenclature

A

heat exchanger surface area, m2

cp

specific heat, kJ/kg K

h

enthalpy, kJ/kg

k

thermal conductivity, W/m K

\( \dot{m} \)

mass flow rate, kg/s

Q

heat transfer, kJ

R

thermal resistance, K/W

T

temperature, °C or K

U

overall heat transfer coefficient, W/m2 K

W

power, kW

Z

thermoelectric figure of merit

Greek

α

thermal diffusivity, m2/s

Δ

Change

ρ

density, kg/m3

Subscript

1

Rankine working fluid leaving the boiler

6

Rankine working fluid entering preboiler

7

Rankine working fluid leaving preboiler

c, C

low (cold)-side temperature of the TEG

exh

exhaust stream leaving the boiler

h, H

high-temperature side

HHi

high-temperature heat exchanger inlet

HHo

high-temperature heat exchanger outlet

HHs

high-temperature heat exchanger surface

L

low (cold)-side temperature condition

n

n-type thermal electric material

out

leaving system

p

p-type thermal electric material

r

Rankine cycle

ave

averaged value

th

thermal

Copyright information

© TMS 2009

Authors and Affiliations

  • Erik W. Miller
    • 1
  • Terry J. Hendricks
    • 2
  • Richard B. Peterson
    • 1
  1. 1.School of Mechanical, Industrial and Manufacturing EngineeringOregon State UniversityCorvallisUSA
  2. 2.Pacific Northwest National LaboratoryRichlandUSA

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