Rewet Temperature Correlations for Liquid-Nitrogen Boiling Pipe Flows across Varying Flow Conditions and Orientations

[+] Author and Article Information
Sam Darr

571 Gale Lemerand Drive Gainesville, FL 32611 gatorsamd@ufl.edu

Jun Dong

571 Gale Lemerand Drive Gainesville, FL 32611 jund@ufl.edu

Neil Glikin

331 MAEB University of Florida Gainesville, FL 32611 neil.glikin@ufl.edu

Jason Hartwig

21000 Brookpark Road Cleveland, OH 44135 Jason.w.hartwig@nasa.gov

Jacob Chung

Department of Mechanical and Aerospace Engineering University of Florida Gainesville, FL 32611-6300 jnchung@ufl.edu

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Thermal Science and Engineering Applications. Manuscript received October 19, 2018; final manuscript received January 25, 2019; published online xx xx, xxxx. Assoc. Editor: Pedro Mago.

ASME doi:10.1115/1.4042857 History: Received October 19, 2018; Accepted January 27, 2019


In many convective liquid-vapor phase change heat transfer engineering applications, cryogenic fluids are widely used in industrial processes, spacecraft and cryosurgery systems, and so on. For example, cryogens are usually used as liquid fuels such as liquid hydrogen, liquid methane, and liquid oxygen in the rocket industry, liquid nitrogen and helium are frequently used to cool superconducting magnetic device for medical applications. In these systems, proper transport, handling, and storage of cryogenic fluids are of extreme importance. Among all the cryogenic transport processes performed in room temperatures, Quenching, also termed chilldown, is an unavoidable initial, transient phase-change heat transfer process that brings the system down to the cryogenic condition. The Leidenfrost temperature or rewet temperature that signals the end of film boiling is practically considered the completion point of a quenching process. Therefore, rewet temperature has been considered the most important parameter for the engineering design of cryogenic thermal management systems. As most of the previous correlations for predicting the Leidenfrost temperature and the rewet temperature have been developed for water, they are shown to disagree with recent liquid nitrogen pipe chilldown experiments in upward and downward flow directions over a wide range of flow rates, pressures, and degrees of inlet subcooling. In addition to a complete review of the literature, two modified correlations are presented, one based on bubble growth and another based on the theoretical maximum limit of superheat. Each correlation performs well over the entire data set.

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