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Vol. 17, Special Issue, December 2012, pp. 257-266

 

Selected papers from the 4th International Conference on Intelligent & Advanced Systems (ICIAS' 2012),

12-14 June 2012, Malaysia, Kuala Lumpur

 

Bullet

 

Utilizing Bi2Te3 TE Pellet as the Condenser of Thermal Power Plant
 

1 M. Rafiee, 2 A. Siadatan, 3 E. Zarei Ali Abadi and 4 E. Afjei

1 Young Researchers Club, West Tehran Branch, Islamic Azad University, Tehran, Iran

2 Department of Electrical Eng., West Tehran Branch, Islamic Azad University, Tehran, Iran

3 Technical Vocational University, Enghelab Eslami Technical Collage, Tehran, Iran

4 Department of Electrical Eng., Shahid Beheshti University G. C., Tehran, Iran

E-mail: rafiee.mehran@ieee.org, a_siadatan@wtiau.ac.ir, e_zareia@yahoo.com, e-afjei@sbu.ac.ir

 

 

Received: 29 September 2012   /Accepted: 29 October 2012   /Published: 18 December 2012

Digital Sensors and Sensor Sysstems

 

Abstract: The efficiency of thermal power plants is rather poor. In the power plants, before starting a new cycle, the steam which is used to spin the turbine in the last cycle has to be condensed to water at first and then reheated to change into steam again. This process is an important thermodynamic rule and needed for an efficient heat to electricity conversion cycle in the power plants, so, in addition to mechanical and heat transfer losses, large amounts of fuel energy is wasted during condensation and rejected to the atmosphere. In the presented paper, we decide to convert some of the condenser wasted energy to electricity using thermoelectric material. At first, the cycle occurring in thermal power plants in which the electricity is generated from the fuel heat, is explained. Then, the two condenser types and their performance mechanism are declared. After selecting appropriate thermoelectric material and presenting its characteristic and also equations, a thermoelectric generator is designed to use as the condenser of a 2000 MW thermal power plant. It's shown that about 3.3 % increasing in the power plant efficiency is expected by using the selected thermoelectric generator in the condensation cycle.

 

Keywords: Thermal power plant, Rankine cycle, Condenser, Thermoelectric material

 

 

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