SpringerLink Springer Engineering eBooks 2017 English+International

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Preface; Nomenclature; Acknowledgments; Contents; Chapter 1: Introduction; 1.1 Background; 1.2 Objectives; References; Chapter 2: Flow Boiling Heat Transfer and Pressure Drop Characteristics in Expanding Microgap Channel; 2.1 Experimental Setup and Procedure; 2.2 Flow Boiling Bubble Characteristics; 2.3 Comparison of Pressure Drops; 2.4 Comparison of Boiling Curves; 2.5 Comparison of Local Flow Boiling Heat Transfer Coefficients; 2.6 Comparison of Microgap Heat Transfer Coefficient Data with Literature; 2.7 Comparison of Wall Temperature Uniformity over the Heat Sink; 2.8 Conclusions.

4.5 Comparison of Pressure Drops4.6 Comparison of Flow Boiling Instabilities; 4.7 Conclusions; References; Chapter 5: Flow Boiling Performance in Scaled Up Expanding Channel Geometries: A Comparative Study Between Straight and Stepped Fin Minichannels; 5.1 Experimental Setup and Procedure; 5.2 Comparison of Boiling Curves; 5.3 Comparison of Heat Transfer Coefficients; 5.4 Comparison of Pressure Drops; 5.5 Comparison of Wall Temperature Uniformity over the Heat Sink; 5.6 Conclusions; References; Chapter 6: Closure; Appendix A: Uncertainty Analysis; Uncertainty in Sums and Differences.

Uncertainties in Products and Quotients Uncertainty in Any Function of One Variable; Uncertainty in a Power; Uncertainty in a Function of Several Variables; Appendix B: Data Reduction; Microgap Data Reduction; Microchannel Data Reduction; References; Index.

This Brief presents an up to date summary of details of the flow boiling heat transfer, pressure drop and instability characteristics; two phase flow patterns of expanding microchannels. Results obtained from the different expanding microscale geometries are presented for comparison and addition to that, comparison with literatures is also performed. Finally, parametric studies are performed and presented in the brief. The findings from this study could help in understanding the complex microscale flow boiling behavior and aid in the design and implementation of reliable compact heat sinks for practical applications.