Influence of orifice in entropy generation and exergy analysis under transient condition for large diameter natural circulation loops

Elton, D N and Arunachala, U C and Rajat, A C (2021) Influence of orifice in entropy generation and exergy analysis under transient condition for large diameter natural circulation loops. International Journal of Exergy, 36 (2 3 4). pp. 298-314. ISSN 1742-8297

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Abstract

: Stable power generation is of concern due to instability in NCL. The entropy generation analysis in a 38.89 mm diameter loop identified the flow reversals by a drop in its value after a peak. Orifice plates and operating procedures lead to a change in threshold value. During unsteady state, the least entropy generation was observed with β = 0.77. At higher power, constant power generation is possible with low orifice as it exhibits better exergy efficiency. The entropy generated due to friction was negligible compared to that by heat transfer

Item Type: Article
Uncontrolled Keywords: natural circulation systems; single-phase; instantaneous entropy generation; instability; orifice; large-diameter loop; exergy analysis.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 08 Jan 2022 05:23
Last Modified: 08 Jan 2022 05:23
URI: http://eprints.manipal.edu/id/eprint/158013

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