Author: R. A. RockowPublisher:
ISBN:
Category : Fouling
Languages : en
Pages : 58
Book Description
Survey of the Literature Pertaining to the Phenomena of Nucleate Boiling
Author: R. A. RockowLiterature Survey on Liquid Metal Boiling
Author: Richard E. BalzhiserPublisher:
ISBN:
Category : Film boiling
Languages : en
Pages : 172
Book Description
A survey was originated for the purpose of collecting and evaluating information pertaining to the current status of liquid-metal-boiling technology. Existing correlations for predicting heat-transfer coefficients in the nucleate- and film-boiling regimes are simmarized. Correlations which predict the critical heat flux are presented and compared with the experimental data available. The importance of two-phase-flow considerations in understanding the heat-transfer phenomena prompted the inclusion of additional sections regarding flow regimes and the pressure drops in flowing two-phase media. Appended is a summary of physical properties for various liquid metals and water.
Nuclear Science Abstracts
Author: Bibliographies of Interest to the Atomic Energy Program
Author: U.S. Atomic Energy CommissionPublisher:
ISBN:
Category : Engineering
Languages : en
Pages : 310
Book Description
Bibliographies of Interest to the Atomic Energy Program
Author: A Survey of the Literature on Heat Transfer from Solid Surfaces to Cryogenic Fluids
Author: Robert J. RichardsPublisher:
ISBN:
Category : Ebullition
Languages : en
Pages : 52
Book Description
A bibliography of 156 references in heat transfer from solid surfaces to fluids and related phenomena is presented. Heat transfer data obtained from experimental work on cryogenic fluids are presented in graphical form. The theoretical and empirical formulations appearing in the references are presented. In those cases where sufficient information is available to make numerical computations, the formulations are presented graphically to permit comparison with the results of the experimental work.
Transient Phenomena Associated with Heat Transfer in Nucleate Boiling
Author: R. A. KumarCatalog of Technical Reports
Author: United States. Dept. of Commerce. Office of Technical ServicesPublisher:
ISBN:
Category :
Languages : en
Pages : 850
Book Description
Experimental Study of Nucleate Boiling Bubble Dynamics and Heat Transfer Enhancement on Printed Bi-functional Surfaces
Author: Michele DavidPublisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 76
Book Description
Boiling heat transfer is studied for its ability to dissipate high fluxes and achieve heat transfer coefficients two orders of magnitude greater than single-phase heat transfer systems. Heater surface enhancement with increased surface area, varied geometry, wettability contrast and micro/nano-structures can further enhance boiling heat transfer performance through bubble nucleation augmentation. Bubble nucleation control, growth and departure dynamics is important in understanding boiling phenomena and enhancing nucleate boiling heat transfer performance. Bi-functional surfaces for enhanced boiling heat transfer were fabricated and studied through investigation of bubble dynamics and pool boiling experiments. For the fabrication of the surface, hydrophobic polymer dot arrays are first printed on a substrate, followed by hydrophilic ZnO nanostructure deposition via microreactor-assisted nanomaterial deposition (MAND) processing. Wettability contrast between the hydrophobic polymer dot arrays and aqueous ZnO solution allows for the fabrication of surfaces with distinct wettability regions. Bi-functional surfaces with various configurations were fabricated and their bubble dynamics were examined at elevated heat flux, revealing various nucleate boiling phenomena. In particular, aligned and patterned bubbles with a tunable departure frequency and diameter were demonstrated in a boiling experiment for the first time. A pool boiling experimental facility has been designed and built to investigate nucleate pool boiling in water at atmospheric pressure. Resulting boiling curves of enhanced surfaces showed up to 3X enhancement in heat transfer coefficients at the same surface superheat using bi-functional surfaces, compared to a bare stainless steel surface. The surfaces show promising results for energy savings in two-phase change applications.
Bibliography of Scientific and Technical Bibliographies
Author: Publisher:
ISBN:
Category : Bibliographical literature
Languages : en
Pages : 914
Book Description