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11 results on '"Gaitonde, U.N."'

3. Modeling of a coal-fired natural circulation boiler

Author

Bhambare, K.S., Mitra, Sushanta K., and Gaitonde, U.N.

Subjects
Boilers -- Models, Coal-fired furnaces -- Models, Engineering and manufacturing industries, Petroleum, energy and mining industries, Science and technology
Abstract

Modeling of a natural circulation boiler for a coal-fired thermal power station is presented here. The boiler system is divided into seven subcomponents, and for each section, models based on conservation of mass, momentum, and energy are formulated. The pressure drop at various sections and the heat transfer coefficients are computed using empirical correlations. Solutions are obtained by using SIMULINK. The model is validated by comparing its steady state and dynamic responses with the actual plant data. Open loop responses of the model to the step changes in the operating parameters, such as pressure, temperature, steam flow, feed water flow, are also analyzed. The present model can be used for the development and design of effective boiler control systems. [DOI: 10.1115/1.2719209] Keywords: natural circulation, boiler, drum, downcomer, waterwall, furnace, riser, steady state, transient

Published
2007

6. Analytical study of natural convection in a cavity with volumetric heat generation

Author

Joshi, Mandar V., Gaitonde, U.N., and Mitra, Sushanta K.

Subjects
Simulation methods -- Analysis, Heat -- Convection, Heat -- Research, Engineering and manufacturing industries, Science and technology
Abstract

An analytical study was conducted for natural convection in a cavity of different aspects ratios with uniform volumetric heat generation. The results for velocity profiles when compared with the simulations obtained from Fluent were found to be in good agreement.

Published
2006

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