However, the conversion efficiency of the thermoelectric modules (TEMs) used commercially is less than about 10%.
📌 3 Key Takeaways
🎯
Objective & Hypothesis:In this paper, the role of thermoelectric generators (TEGs) in conversion of geothermal energy into electrical energy has been presented.
📊
Key Findings & Data:In addition, the structures of the TEGs used in the electrical energy production have been reported.
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Conclusion & Impact:However, the conversion efficiency of the thermoelectric modules (TEMs) used commercially is less than about 10%.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Renewable energy · energy efficiency · energy production
Abstract
In this paper, the role of thermoelectric generators (TEGs) in conversion of geothermal energy into electrical energy has been presented. In addition, the structures of the TEGs used in the electrical energy production have been reported. The TEGs directly convert the thermal energy into the electrical energy. The thermoelectric (TE) technology is used in both the air–conditioning and the electrical energy generation. Also, the TE technology is eco–friendly as it has no greenhouse gas emissions, durable due to the absence of moving parts and is silent. However, the conversion efficiency of the thermoelectric modules (TEMs) used commercially is less than about 10%.
MAMUR, H., AHISKA, R. (2014). A Review: Thermoelectric Generators in Renewable Energy. International Journal Of Renewable Energy Research, Cilt: 4 Sayı: 1, 128–136. https://ajindex.com/articles/996510
Rowe DM. Review thermoelectric waste heat recovery as a renewable energy source. I J E S P 2006; 1: 13–23.
Carlson EJ, Strunz K, Otis BP. A 20 mV input boost converter with efficient digital control for thermoelectric energy harvesting. IEEE J Solid–St Circ 2010; 45: 741– 750. Gould CA, Shammas NYA, Grainger S, Taylor I. A comprehensive review of thermoelectric technology, micro-electrical and power generation properties. In: Proceedings of the 26th International Conference on Microelectronics; 11–14 May 2008;
NIS, Serbia. pp. 329–332.
Ramadass YK, Chandrakasan AP. A battery-less thermoelectric energy harvesting interface circuit with 35 mV startup voltage. IEEE J Solid–St Circ 2011; 46: 333–341.
Karabetoglu S, Sisman A, Ozturk ZF, Sahin T. Characterization of a thermoelectric generator at low temperatures. Energ Convers Manage 2012; 62: 47–50.
Ahıska R, Mamur H, Uliş M. Modeling and experimental study of thermoelectric module as generator. J Fac Eng Archit Gaz 2011; 26: 889–896. (article in Turkish with an abstract in English). Hodes M. Optimal pellet geometries for thermoelectric power generation. IEEE T Compon Pack T 2010; 33: 307–318.
Huang MJ, Chou PK, Lin MC. Thermal and thermal stress analysis of a thin–film thermoelectric cooler under the influence of the Thomson effect. Sensor Actuat A– Phys 2006; 126: 122–128.
Wang W, Wang Z, Tang J, Yang S, Jin H, Zhao GL, Li Q. Seebeck coefficient and thermal conductivity in doped C60. J Renew Sustain Ener 2009; 1: 104–121 (2009).
Goldsmid HJ, Nolas GS. A review of the new thermoelectric materials. In: Proceedings of the 20th International Conference on Thermoelectrics; 08–11 June 2001;
Beijing, China. pp. 1–6.
Ahıska R, Mamur H. A test system and supervisory control programmable logic controller for thermoelectric generators. Energ Convers Manage 2012; 64: 15–22.
Ahıska R, Mamur H., Design and implementation of a new portable thermoelectric generator for low geothermal temperatures, IET Renew Power Gener, 2013; 7, 700-706.
Hsu CT, Yao DJ, Ye KJ, Yu B. Renewable energy of waste heat recovery system for automobiles. J Renew Sustain Ener 2010; 2: 105–116.
Nuwayhid RY, Shihadeh A, Ghaddar N. Development and testing of a domestic woodstove thermoelectric generator with natural convection cooling. Energ Convers Manage 2005; 46: 1631–1643.
Tsai HL, Lin JM. Model building and simulation of thermoelectric module using Matlab/Simulink. J Electron Mater 2009; 39: 2105–2111.