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Showing 1 to 20 of 99 for “"Boiling Heat Transfer"”.
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Enhancement Techniques of Boiling Heat Transfer
<p>The aim of this study is to investigate pool boiling performance of water under atmospheric pressure by two techniques. The first method is by adding small amounts of surfactants, and the second way is by using structured surfaces.</p> <p>The first technique is investigated experimentally with …
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Design of Fins for Boiling Heat Transfer
Made available in DSpace on 2014-12-08T23:18:11Z (GMT). No. of bitstreams: 1 6604194.pdf: 5787961 bytes, checksum: a1fd388d729af86fe13d3bf6c4cf221f (MD5) Previous issue date: 1965
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Pool boiling heat transfer characteristics of nanofluids
… very significant enhancement (up to 200%) of the boiling Critical Heat Flux (CHF) at modest nanoparticle concentrations (50.1% by volume). Since CHF is the upper limit of nucleate boiling, such enhancement offers the potential for major performance improvement in many practical applications that …
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Performance of Transverse Fins for Boiling Heat Transfer
Made available in DSpace on 2014-12-08T23:18:32Z (GMT). No. of bitstreams: 1 7105052.pdf: 7163175 bytes, checksum: a4f3e70e435d90eceb97ca957312fa0a (MD5) Previous issue date: 1970
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Physicochernical mechanics of surfactant-enhanced boiling heat transfer
Boiling-employed in a variety of industrial and domestic processes such as in power stations, heating/cooling systems, and desalination plants-is involved with a major portion of the world's energy usage. Its substantial utility can be attributed to moving a large quantity of heat over small …
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Autonomous Experimentation to Accelerate Boiling Heat Transfer Research
Boiling heat transfer stands out as a highly efficient method for dissipating heat, utilized across a spectrum of engineering systems ranging from nuclear reactors to computer processing units. Over the course of decades, researchers have heavily relied on direct visualization of boiling phenomena …
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Jet impingement boiling heat transfer at low coiling temperatures
… The research described here will investigate the boiling conditions that occur for moving plate experiments when steel is cooled towards low coiling temperatures. Experiments were performed on a pilot-scale ROT located at the University of British Columbia using industrially supplied steel plates. …
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Electrostatic control and enhancement of film boiling heat transfer
Boiling heat transfer is severely degraded at high surface temperatures due to the formation of a vapor layer at the surface, commonly known as the Leidenfrost effect. Heat transfer is limited to a critical heat flux (CHF); higher heat fluxes lead to surface dryout and temperature excursions. An …
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Film boiling heat transfer between cryogenic liquids and water
Includes bibliographical references (page 55).
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Population of Active Sites in Nucleate Boiling Heat Transfer
Made available in DSpace on 2014-12-05T17:15:29Z (GMT). No. of bitstreams: 1 6000183.pdf: 4820994 bytes, checksum: 80116481a960348eac3fab35ac59798d (MD5) Previous issue date: 1959
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Boiling heat transfer in porous media with/without chimneys
To evaluate the effects of porous deposits over a heating surface on the boiling heat transfer in light water nuclear power reactors, a detailed numerical modeling and evaluation study was conducted. The processes of boiling heat transfer in the porous corrosion deposits deal with two-phase flows …
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Effects of surface parameters on boiling heat transfer phenomena
… fluid, have been shown to enhance pool and flow boiling CHF. The CHF enhancement was due to nanoparticle deposited on the heater surface, which was verified in pool boiling. However, no such work has been done for flow boiling. Using a cylindrical tube pre-coated with Alumina nanoparticles coated …
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Boiling heat transfer characteristics of steam generator U-tube fouling
The boiling heat transfer characteristics of steam generator u-tube fouling deposits were identified by developing a boiling heat transfer model and determining its accuracy through the comparison of calculated and experimental results. Magnetite deposits were fabricated in the laboratory and were …
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Characterization of pool boiling heat transfer from porous-coating-enhanced surfaces
… electronic systems. Immersion cooling by boiling is one of the preferred methods for high power density applications, due to its passive nature and high heat transfer coefficients obtained. Pool boiling heat transfer has been extensively studied in recent decades to understand the inherent …
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Boiling Heat Transfer From Horizontal Cylinders to Immiscible Liquid-Liquid Mixtures
Made available in DSpace on 2014-12-10T21:24:43Z (GMT). No. of bitstreams: 1 7105252.pdf: 4882844 bytes, checksum: d6e20063fcb7f45e174edf5c484a9e37 (MD5) Previous issue date: 1970
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Experiments In Pool Boiling Heat Transfer And Nucleationdynamics Of High Pressure Refrigerants
A high pressure pool boiling experiment of pressurized R134a is designed and built, utilizing thermochromatic liquid crystal techniques. Liquid crystals thermo-chromatography uses encapsulated liquid crystals that are sensitive to temperature. When exposed to hot temperatures the crystal reflect a …
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Fundamentals of microlayer evaporation and its role on boiling heat transfer enhancement
<p>Boiling, a dynamic and multiscale process, is widely used in industrial applications as it can transfer a large amount of heat over a small surface area. It has been studied for over five decades; however, a comprehensive understanding of the process is still lacking. The bubble ebullition cycle …
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Design guidelines of laser structured surfaces for enhanced pool boiling heat transfer
Boiling enhancement has emerged as a salient pathway to improve energy efficiency and reduce operating costs. In this work, we strengthen external pool boiling of R-1336mzz(Z) on tube exteriors by optimizing laser texturing recipes. Systematic adjustment of laser parameters enables deterministic …
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