Title: Exergo-economic analysis of parabolic trough integrated cogeneration power plant

Authors: Prakash Saxena; K.S. Reddy

Addresses: Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India ' Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India

Abstract: Cogeneration plant produces heat and electricity simultaneously, and have a great potential towards best use of primary energy resources as compared to other plants, which produces heat and electricity separately. Parabolic trough integrated cogeneration power plant (PTICPP) is one of the attractive alternatives to utilising solar energy in an efficient manner. The economically viable PTICPP could bring an opportunity for its utilisation at large scale. Therefore, estimation of the levelised cost of electricity (LCE) is done by two different rational cost apportionment method namely; lost-kilowatt and exergy method. To achieve the objective of this paper, a reference PTICPP having a capacity of 20 MW_e and 61.94 MW_th is designed, and comprehensive thermal performance of reference plant is analysed at the variable amount of irradiation. In Indian climatic condition, the minimum estimated LCE are 0.127 $/kWh and 0.114 $/kWh respectively by lost-kilowatt and exergy method.

Keywords: PTICPP; parabolic trough integrated cogeneration power plant; direct steam generation; exergo-economics; LCE; levelised cost of electricity.

DOI: 10.1504/IJEX.2018.092502

International Journal of Exergy, 2018 Vol.26 No.1/2, pp.41 - 57

Received: 05 Sep 2017
Accepted: 12 Nov 2017
Published online: 23 Jun 2018 *

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