首页|Assessing the accuracy of mathematical models used in thermoelectric simulation: Thermal influence of insulated air zone and radiation heat

Assessing the accuracy of mathematical models used in thermoelectric simulation: Thermal influence of insulated air zone and radiation heat

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  • NSTL
  • Elsevier
An accurate mathematical model of thermoelectric modules (TEMs) provides the basis for the analysis and design of thermoelectric conversion system. TEM models from the literature are only valid for the heat transfer of N-type and P-type thermoelectric couples without considering air around the actual thermoelectric couples of TEMs. In fact, air space imposes significant influence on the model computational accuracy, especially for a TEM with large air space inside. In this study, heat transfer analyses of air between the TEM cold and hot plates were carried outin order to propose a new mathematical model that minimises simulation errors: This model was applied to analyse characteristic parameters of two typical TEMs, and the ratio of cross-sectional area of air space to thermocouples were 48.2% and 80.0%, respectively. The average relative errors in simulation decreased from 5.2% to 2.8% and from 12.8% to 3.7%, respectively. It is noted that our new model gives result more accurate than models from the literature provided that higher temperature difference occurs between hot side and cold side of TEM. Thus, the proposed model is of theoretical significance in guiding future design of TEMs for high-power or large-temperature-difference thermoelectric conversion systems. (C) 2015 Elsevier Ltd. All rights reserved.

Thermoelectric moduleHeat transfer through airMathematical modelThermoelectric conversion system

Gao, Junling、Du, Qungui、Chen, Min、Li, Bo、Zhang, Dongwen

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S China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510641, Guangdong, Peoples R China

Aalborg Univ, Inst Energy Technol, DK-9220 Aalborg, Denmark

Univ Nottingham, Fac Engn, HVACR, Nottingham NG7 2RD, England

Hebei Univ Sci & Technol, Sch Informat Sci & Engn, Shijiazhuang 050018, Peoples R China

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2015

10.1016/j.applthermaleng.2015.02.072

Applied thermal engineering

Applied thermal engineering

EIISTP
ISSN：1359-4311
年,卷(期)：2015.82
  • 11
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