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Technical and economic analysis of thermoelectric modules with macroporous thermoelectric elements

Title
Technical and economic analysis of thermoelectric modules with macroporous thermoelectric elements
Authors
Ngondi, Anne Flora NgwaLee, HohyunWee, Daehyun
Ewha Authors
위대현
SCOPUS Author ID
위대현scopus
Issue Date
2017
Journal Title
ENERGY CONVERSION AND MANAGEMENT
ISSN
0196-8904JCR Link1879-2227JCR Link
Citation
vol. 135, pp. 327 - 335
Keywords
Thermoelectric generatorsPorosityHeat transferEfficiencyMaximum power
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Limited heat transfer between thermoelectric modules and external heat reservoirs reduces the temperature difference imposed on thermoelectric materials, which reduces the power output of thermoelectric generators. In this study, the addition of macroscopic pores into thermoelectric materials is proposed as one way for resolving the issue. A semi-empirical model that relates the conductivities to the level of porosity is used for modeling the effect of porosity. The maximum power and other relevant parameters are compared between the generators with and without porosity at a realistic condition. An analytic model for evaluating economic performance is utilized to study the economic benefits of the implementation of porosity in thermoelectric elements. We demonstrate that the use of macroporous thermoelectric elements can effectively decrease the thermal conductance of the thermoelectric module, resulting in improved performance. The amount of raw materials needed to produce thermoeletric modules can be reduced simultaneously, resulting in economic benefits. (C) 2016 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.enconman.2016.12.077
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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