Browsing Heat Transfer Laboratory by Title
Now showing items 35-54 of 80
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The influence of return bends on the downstream pressure drop and condensation heat transfer in tubes
(Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1971], 1971)The influence of return bends on the downstream pressure drop and heat transfer coefficient of condensing refrigerant R-12 was studied experimentally. Flow patterns in glass return bends of 1/2 to 1 in. radius and 0.315 ... -
Influence of surface roughness and waviness upon thermal contact resistance
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1967], 1967)This work deals with the phenomenon of thermal resistance between contacting solids. Attention is directed towards contiguous solids possessing both surface roughness and waviness. When two such surfaces are brought together ... -
Investigation of heat transfer augmentation through use of internally finned and roughened tubes : final summary report
(Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1970], 1970)This report summarizes a three-year program concerned with obtaining basic design information for tubes having a random roughness on the inside wall (RID) and tubing having continuous internal fins (Forge Fin). Test apparatus ... -
Liquid and gas distributions in a two-phase boiling analogy
(Cambridge, Mass. : Massachusetts Institute of Technology, Division of Industrial Cooperation, [1958], 1958)This report contains a description of the design and operation of an experimental appats for the analysis of two-phase flows similar to thom occuwring in boiler tubes at low pressures. Velocity and denuity profiles of ... -
The Measurement, interpretation and use of unsteady momentum fluxes in two-phase flow.
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1967], 1967)The steady and unsteady components of the momentum flux in a two-phase flow have been measured at the exit of a vertical pipe by means of an impulse technique using a turning tee and beam. Different electrical filters have ... -
Mechanism and behavior of nucleate boiling heat transfer to the alkalai liquid metals
(Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1969], 1969)A model of boiling heat transfer to the alkali liquid metals is postulated from an examination of the events and phases of the nucleate boiling cycle. The model includes the important effect of microlayer evaporation which ... -
Mechanism of dropwise condensation
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1963], 1963)From a study of surface phenomena, information is obtained about conditions under which net condensation can occur. An experimental examination of the surface, using an optical method capable of detecting thin films of ... -
The mechanism of heat transfer in nucleate pool boiling
(Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1962], 1962)A criterion is developed for bubble initiation from a gas filled cavity on a surface in contact with a superheated layer of liquid. It is found that the temperature of bubble initiation on a given surface is a function of ... -
Mechanism of nucleate pool boiling heat transfer to sodium and the criterion for stable boiling
(Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1967], 1967)A comparison between liquid metals and other common fluids, like water, is made as regards to the various stages of nucleate pool boiling. It is suggested that for liquid metals the stage of building the thermal layer plays ... -
The mechanism of void formation in initially subcooled systems
(Cambridge, Mass., M.I.T. Dept. of Mechanical Engineering, [1963], 1963)When an initially subcooled, water filled system undergoes a transient in heat flux or pressure such that bubbles form, the most important variable which determines the volume of the resulting void is the number of bubbles ... -
The mechanism of void formation in initially subcooled systems
(Cambridge, Mass., M.I.T. Dept. of Mechanical Engineering, [1963], 1963)When an initially subcooled, water filled system undergoes a transient in heat flux or pressure such that bubbles form, the most important variable which determines the volume of the resulting void is the number of bubbles ... -
A method of correlating heat transfer data for surface boiling of liquids
(Cambridge, Mass. : M.I.T. Division of Industrial Cooporation, [1951], 1951)A method based an a logical uxplanation of the meani of beat transfer associated with the boiling process is presented for correlating heat transfer data for nucleate boiling of liquids for the case of pool boiling. Tbe ... -
Model of critical heat flux in subcooled flow boiling
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1968], 1968)The physical phenomenon occurring before and at the critical heat flux (CHF) for subcooled flow boiling has been investigated. The first phase of this study established the basic nature of the flow structure at CHF. A ... -
The Momentum flux in two-phase flow
(Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1965], 1965)The average momentum flux at a section of a pipe with twophase upflow has been measured by the impulse technique. Steamwater and air-water mixtures were tested in one-inch and onehalf inch nominal pipes. Homogeneous ... -
Natural convection flows in parallel connected vertical channels with boiling
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1967], 1967)The steady-state flow configuration in an array of parallel heated channels is examined with the objective of predicting the behavior of a reactor during a loss of flow accident. A method of combining the results of single ... -
Nucleate boiling bubble growth and departure
(Cambridge, Mass. : Massachusetts Institute of Technology, Division of Industrial Cooperation, [1959], 1959)The vapor bubble formation on the heating surface during pool boiling has been studied experimentally. Experiments were made at the atmospheric pressure 28 psi and 40 psi, using degassed distilled water and ethanol. The ... -
Post critical heat transfer to flowing liquid in a vertical tube
(Cambridge, Mass. : Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 1974, 1974) -
The prediction of low quality boiling voids
(Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1963], 1963)Slug flow theory is used to predict the density in heated channels of various shapes. In order to make this calculation possible, measurements are made of the bubble rise velocity in annuli, tube bundles, and channels. It ... -
The Prediction of multiple heated channel flow patterns from single channel pressure drop data
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering [1968], 1968)Pressure drop and burnout data taken on a single tube apparatus using Freon at one atmosphere has been used to predict the flow patterns, burnout and points at which flow reverses in a five tube array. All the behavior ... -
Pressure drop with surface boiling in small-diameter tubes
(Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1964, 1964)Pressure drop for water flowing in small-diameter tubes under isothermal, nonboiling, and surface-boiling conditions was investigated. Experimental results for local pressure gradient and heattransfer coefficients are ...
