Boiling Surfaces

Bergles, A. E. and W. M. Rohsenow, The Determination of Eorced-Convection Surface-Boiling Heat Transfer, Trans, of the ASME Journal ofiHeat Transfier, (1963), Paper No. 63-HT-22. 

Rohsenow, W. H., A Method of Correlating Heat Transfer Data for Surface Boiling of Liquids, Heat Transfer Div. ASME, Atlantic City, NJ. Meeting Nov. 25, (1951) Paper No. 51-A-llO. 

Rousenow. W.M. Trans. Am. Soc. Mech. Ping. 74 (1952) 969. A method of correlating heat transfer data for surface boiling of liquids. 

Subcooled nucleate boiling is frequently called local boiling or surface boiling. 

Brown, W. T., Jr., 1967, A Study of Flow Surface Boiling, D.Sci. thesis, Massachusetts Institute of Technology, Cambridge, MA. (4)... 

Gunther, F. C., 1951, Photographic Study of Surface Boiling Heat Transfer to Water with Forced Convection, Trans. ASME, J. Heat Transfer 73 115-123. (3)... 

If a cold liquid (below the boiling point) is caused to flow past a hot solid, subcooled boiling results. Because the boiling exists on the hot solid only, this is often called surface boiling. For the usual subcooled boiling, bubbles form on the hot solid in the manner observed for nucleate boiling. The bubbles then collapse while still on the solid, or they may break loose and collapse in the body of the cold, bulk liquid. 

Inflammation of the respiratory organs and internal membranes generally. One ounce of herb in 1 1/2 pints of water simmered down to 1 pint. Dose, wineglassful every two or three hours. Used externally as a poultice for inflamed surfaces, boils, burns and skin eruptions. 

McAdams, W. H., et al. Heat Transfer at High Rates to Water with Surface Boiling. Ind. Eng. Chem., vol. 41, pp. I945-I955, I949. 

C, ink near the resistor surface boils, and the resulting high pressure ( 100 times atmospheric) vapor bubble pushes ink through a nozzle. Ink is then drawn by capillary action from an ink reservoir to refill the chamber. See Fig. 1. 

Bergles, F.E. Rohsenow, W.M. The determination of forced- convection surface boiling heat transfer. Amer. Soc. Mech. Eng. Trans. Sec. V (1964) 365-372... 

In channel flow it is usually necessary to locate the transducer upstream or downstream of the test channel, with the result that the sound field is greatly attenuated. Tests with 80-Hz vibrations [319] indicate no improvement of subcooled boiling heat transfer or critical heat flux. Romie and Aronson [324], using ultrasonic vibrations, found that subcooled critical heat flux was unaffected. Even where intense ultrasonic vibrations were applied to the fluid in the immediate vicinity of the heated surface, boiling heat transfer was unaffected [325]. The severe attenuation of the acoustic energy by the two-phase coolant appears to render this technique ineffective for flow boiling systems. 

V. Zajic, Some Results on Research of Intensified Water Cooling by Roughened Surfaces and Surface Boiling at High Heat Flux Rates, Acta Technica CSAV (5) 602-612,1965. 

A. E. Bergles and L. S. Scarola, Effect of a Volatile Additive on the Critical Heat Flux for Surface Boiling of Water in Tubes, Chem. Eng. Sci. (21) 721-723,1966. 

Product/ Supplier Description Application Properties Surface Boiling Viscosity Tension Point (°C) (cps, 25° C) (dynes/cm) Flash Vapor Point Pressure (°C) (mm) ... 

Surface boiling— Water vaporization signals the beginning of this stage. The bubbles formed cause turbulence in the oil surrounding the food and, therefore, the mode of heat transfer to the food surface changes from natural to forced convection. Crust starts to form at the surface of the food. 

Vapor pressure The pressure above a liquid caused by molecules that have escaped from the liquid surface Boiling point The temperature at which the vapor pressure of a liquid equals the atmospheric pressure and boiling occurs. If the atmospheric pressure is 1 atm. it is the normal boiling point. 

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