Applied Numerical Analysis. By C.F. Gerald. Pp. xii, 340. £3·60. 1970. (Addison-Wesley.)

Heat transfer—A review of 2003 literature

A detailed analysis of microchannel/microgap heat transfer data for two-phase flow of refrigerants and dielectric liquids, gathered from the open literature and sorted by the Taitel and Dukler flow regime mapping methodology, is performed. Annular flow is found to be the dominant regime for this thermal transport configuration and to grow in importance with decreasing channel diameter. A characteristic M-shaped heat transfer coefficient variation with quality (or superficial velocity) for the flow of refrigerants and dielectric liquids in miniature channels is identified. The inflection points in this M-shaped curve are seen to equate approximately with flow regime transitions, including a first maximum at the transition from Bubble to Intermittent flow and a second maximum at moderate qualities in Annular flow, just before local dryout begins. The predictive accuracy of five classical two-phase heat transfer correlations for miniature channel flow is examined. Selecting the best fitting of the classical ...

Modeling and Prediction of Two-Phase Microgap Channel Heat Transfer Characteristics

Flow boiling of a potential refrigerant R32/R1234ze(E) in a horizontal microfin tube of 5.21 mm inner diameter is experimentally investigated. The heat transfer coefficient (HTC) and pressure drop are measured at a saturation temperature of 10 °C, heat fluxes of 10 and 15 kW m −2 , and mass velocities from 150 to 400 kg m −2  s −1 . The HTC of R1234ze(E) is lower than that of R32. Degradation in the HTC of the R32/R1234ze(E) mixture is significant; the HTC is even lower than that of R1234ze(E). The HTC is minimized at the composition 0.2/0.8 by mass, where the temperature glide and the mass fraction distribution are maximized. A predicting correlation based on Momoki et al. (1995) associated with the correction methods of Thome (1981) to consider the mass transfer resistance and Stephan (1992) to consider the additionally required sensible heat is proposed and validated with the experimental results.

Flow boiling of non-azeotropic mixture R32/R1234ze(E) in horizontal microfin tubes

Electroosmotic Flow of MHD Power Law Al 2 O 3 -PVC Nanouid in a Horizontal Channel: Couette-Poiseuille Flow Model

Effects of viscous dissipation and fluid axial heat conduction on heat transfer for non-Newtonian fluids in ducts with uniform wall temperature: Part I: Parallel plates and circular ducts

Experimental study of surface effect on flow boiling heat transfer in horizontal smooth tubes

Effect of viscous dissipation on fully developed heat transfer of non-newtonian fluids in plane laminar poiseuille-couette flow

A correlation for forced convective boiling heat transfer of pure refrigerants in a horizontal smooth tube

A correlation for forced convective boiling heat transfer of nonazeotropic refrigerant mixture of HCFC22/CFC114 in a horizontal smooth tube

Satoru Momoki

Papers

Effects of viscous dissipation and fluid axial heat conduction on heat transfer for non-Newtonian fluids in ducts with uniform wall temperature: Part I: Parallel plates and circular ducts

Experimental study of surface effect on flow boiling heat transfer in horizontal smooth tubes

Effect of viscous dissipation on fully developed heat transfer of non-newtonian fluids in plane laminar poiseuille-couette flow

A correlation for forced convective boiling heat transfer of pure refrigerants in a horizontal smooth tube

A correlation for forced convective boiling heat transfer of nonazeotropic refrigerant mixture of HCFC22/CFC114 in a horizontal smooth tube