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Engineering - Mechanical Engineering | Flow Boiling in Microgap Channels - Experiment, Visualization and Analysis

Flow Boiling in Microgap Channels

Experiment, Visualization and Analysis

Alam, Tamanna, Lee, Poh Seng, Jin, Li-Wen

2014, XI, 84 p. 66 illus., 49 illus. in color.

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  • Provides detailed experimental and visualization studies for microgap, together with some prediction methods for flow regime map
  • Explains the unique confined boiling and consequent heat transfer mechanism in microgap channel
  • Evaluates effects of surface roughness and gap dimension on boiling behavior
Flow Boiling in Microgap Channels: Experiment, Visualization and Analysis presents an up-to-date summary of the details of the confined to unconfined flow boiling transition criteria, flow boiling heat transfer and pressure drop characteristics, instability characteristics, two phase flow pattern and flow regime map and the parametric study of microgap dimension. Advantages of flow boiling in microgaps over microchannels are also highlighted. The objective of this Brief is to obtain a better fundamental understanding of the flow boiling processes, compare the performance between microgap and conventional microchannel heat sinks, and evaluate the microgap heat sink for instabilities and hotspot mitigation.

Content Level » Research

Keywords » Confinement Effect - Flow Boiling - Flow Visualization - Microchannel - Microgap Channel

Related subjects » Energy Technology - Mechanical Engineering - Systems, Storage and Harvesting

Table of contents 

Introduction.- Design and Operating Parameters.- Characteristics of Two-Phase Flow Boiling in Microgap Channel.- Comparison of Flow Boiling Characteristics between Microgap and Microchannel.- Optimization of Microgap Channel Dimension and Operating Condition.- Surface Roughness Effect on Microgap Channel.- Two-Phase Microgap Channel in Mitigating Flow Instabilities and Flow Reversal.- Two-Phase Microgap Channel Cooling Technology for Hotspots Mitigation.- Conclusions and Recommendations.- Appendix A: Uncertainty Analysis for Experimental Data.- Appendix B: Nomenclature.- Appendix C: Data Reduction.

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