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CRITICAL HEAT FLUX: AN OVERVIEW

DOI: 10.1615/AnnualRevHeatTransfer.2020033343
pages 1-28

Dinesh K. Chandraker
Reactor Engineering Division, Bhabha Atomic Research Centre, Mumbai-400085, India

Arnab Dasgupta
Reactor Engineering Division, Bhabha Atomic Research Centre, Mumbai-400085, India

Arun Kumar Nayak
Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, Maharashtra, India; Reactor Engineering Division, Bhabha Atomic Research Centre, Mumbai-400085, India


KEY WORDS: Boiling, CHF, DNB, Dryout

Abstract

The design of heat transfer systems involving boiling two-phase flow is significantly governed by critical heat flux (CHF). CHF denotes the maximum flux that can be safely (or most efficiently) removed from process equipment in a boiling system. This chapter gives an overview of the boiling heat transfer process and the mechanisms that lead to CHF in different two-phase flow regimes.

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