Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/3568
Title: HEAT TRANSFER IN NUCLEATE POOL BOILING UNDER HIGH HEAT FLUX CONDITIONS
Authors: Sood, Vikas
Keywords: MECHANICAL & INDUSTRIAL ENGINEERING;NUCLEATE POOL BOILING;HIGH HEAT FLUX;HEAT TRANSFER
Issue Date: 1993
Abstract: Several investigators have hypothesized that the heat transfer in nucleate pool boiling under high heat flux conditions takes place through a thin liquid layer called macrolayer formed under the large vapour masses over the entire surface of the heater. The heat transfer is through to be governed by transient heat conduction through the material of the heater and the liquid layer (Macrolayer) formed over it. The heat transfer is therefore strongly affected by thermo-physical properties of the heater material and the liquid; the heater thickness and the liquid layer thickness besides heat flux, wall super heat and subcooling etc. Several investigators have proposed transient heat flow models and obtained the numerical results of vapour mass formation and hence the heat transfer rate as a function of these influencing parameters. However, there are large. deviation between predicted and experimental results and there is still a need to develop a realistic heat flow model in high heat flux region. In this work expressions have been developed for heat transfer rate through the macrolayer-solid heater combination using appropriate initial and boundary conditions. The effect of thermo-physical -properties of the solid heater, the heater; macrolayer thickness and the wall superheat on predicted values of heat flux has, been investigated and it has been concluded that there is substantial influence of these parameters on heat
URI: http://hdl.handle.net/123456789/3568
Other Identifiers: M.Tech
Research Supervisor/ Guide: Saini, J. S.
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' THESES (MIED)

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