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Effects of Flow Loop Compressible Volume Position on System Instabilities During Flow Boiling in Micro-channel Heat Sinks by Jeongmin Lee; V.S. Devahdhanush; Steven J. Darges; Issam Mudawar is a Engineering article available to read on EtoBox.

What is Effects of Flow Loop Compressible Volume Position on System Instabilities During Flow Boiling in Micro-channel Heat Sinks about?

Much of published literature addressing flow instabilities in thermal management systems employing micro-channel modules has focused on the instability characteristics of the module alone, and far fewer studies have aimed at understanding the relationship between these characteristics and the compressible volume in the flow loop external to the module. From a practical point of view, developers of micro-channel thermal management systems for many modern applications are in pursuit of practical remedies that would greatly mitigate instabilities and their impact on cooling performance. The present study experimentally examines the effects of compressible volume location in a closed pump-driven flow loop designed to deliver FC-72 to a micro-channel test module having 38 channels with 315-μm hydraulic diameter. Three accumulator locations are investigated: upstream of the test module, downstream of the test module, and between the condenser and the pump. Both high-frequency temporal parameter data and high-speed video records are analyzed for ranges of mass velocity and heat flux, with inlet subcooling held constant at ∼14.5 °C. Pressure Drop Oscillation (PDO) is shown to dominate when

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Author

Jeongmin Lee; V.S. Devahdhanush; Steven J. Darges; Issam Mudawar

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)