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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

THERMODYNAMIC STUDY OF MICRO SCALE ORGANIC RANKINE CYCLE (ORC) USING MODIFIED GOUY−STODOLA EQUATION

DOI: 10.1615/TFESC1.ecv.012774
pages 697-705

Bhavesh Patel
Pandit Deendayal Petroleum University, Raisan, Gandhinagar 382007, Gujarat, India

Vaibhav Jain
Maharaja Agrasen Institute of Technology, New Delhi 110085, Delhi, India

Surendra Singh Kachhwaha
Pandit Deendayal Petroleum University, Raisan, Gandhinagar 382007, Gujarat, India

Nanji J. Hadia
Institute of Chemical and Engineering Science (ICES),lPesek Road, Jurong Island, Singapore 627833


KEY WORDS: ORC system, Energy analysis, Exergy analysis, Performance parameter, Modified Gouy–Stodola law.

Abstract

Thermodynamic analysis of a micro-scale Organic Rankine Cycle (ORC) is performed, to assess its energetic and exergetic performances. The unique feature of the present study is that the performance of ORC is studied with modified Gouy−Stodola equation and the results are compared with the classical approach of exergy evaluation. The expressions are formulated for effective temperature and real irreversible loss for different components of ORC. Energy and exergy losses/destructions for the ORC and its units are determined. Using modified Gouy−Stodola equation, the irreversible loss is higher for the system components having higher effective temperature as compared to reference ambient temperature. Present study shows quantitative difference in total irreversibility rate of ORC when modified yet more realistic approach of exergy analysis is employed.

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