... on the enhanced heat transfer ratio for the smooth tube Figure 3 shows the experimental results of the enhanced tube A using the applied electric field by h versus q curves with 0.25 m/s flow velocity and 24 °C inlet oil-temperature. It is found from Fig. 3 that a relatively strong enhanced heat...

... expressions giving the required electrical oscillating power and the necessary number of capillary tubes. The relative conductivity increase, the specific shaker driving power, and the specific tube bundle size are graphically shown in the figures for several fluids of interest to contribute to designing...

...S. Tiwari; G. Biswas, Mem. ASME; P. L. N. Prasad; Sudipta Basu A numerical investigation of flow and heat transfer in a rectangular duct with a built-in circular tube was carried out for moderate Reynolds numbers and varying blockage ratios. Since the heat transfer in the duct is dictated...

...Sung Jin Kim; Jae Wook Yoo; Seok Pil Jang The present work investigates the heat transfer characteristics of a laminar fully developed forced convection in a circular-sectored finned tube with axially uniform heat flux and peripherally uniform wall temperature. The tubes with circular-sectored fins...

... transfer enhancement methods to that of smooth tubes. They were microfins, twisted tapes, and high fins. Measurements at different mass fluxes were obtained at six refrigerant mass fractions from 100 percent R-22 up to a 50 percent/50 percent mixture of R-22/R-142b. All condensation measurements were...

...LiDong Huang; Larry C. Witte Experiments were carried out to determine the influence of fluid flow and liquid subcooling on flow boiling heat transfer of Freon-113 across horizontal tubes. The data cover wide ranges of velocity (1.5 to 6.9 m / s ) and extremely high levels of liquid subcooling (29...

...Myeong-Gie Kang Diameter effects on nucleate pool boiling heat transfer for a tube with vertical orientation have been obtained experimentally. According to the results (1) the heat transfer coefficient decreases as the tube diameter increases and the trend is more notable with a rougher surface...

...A. S. Fleischer; E. V. McAssey, Jr.; G. F. Jones 16 Dec 1997 11 June 1998 05 12 2007 Boiling Experimental Heat Transfer Modeling Tubes Bowring, R. W., 1962, “Physical Model Based on Bubble Detachment and Calculation of Steam Voidage in the Subcooled Region...

...O. Zu¨rcher; J. R. Thome; D. Favrat Experimental test results for flow boiling of pure ammonia inside horizontal tubes were obtained for a plain stainless steel tube. Tests were run at a nominal saturation temperature of 4°C, nine mass velocities from 20–140 kg/m 2 s, vapor qualities from 1–99...