Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Bare tube"”.
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Heat transfer to supercritical water flowing in short vertical bare tube and rod-bundle geometries
… investigates experimental data from vertical bare tubes and rod-bundle geometries (single-rod annular channel and 3-rod bundles with helical ribs) at pressures of 22.6–27.5 MPa, mass fluxes of 248–2700 kg/m²s, and Heat Fluxes (HFs) of 103–3289 kW/m². All three heat transfer regimes (Normal, …
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Specifics of forced-convection heat transfer to supercritical water flowing upward in annular and bundle flow geometries
… to the coolant would occur differently than in bare tubes. The main objective of this work is to propose and verity a universal method to accurately predict Heat Transfer Coefficients (HTCs) and wall temperatures using HTC correlation(s) for various annular- and bundle-flow geometries cooled …
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An Experimental Demonstration Of Converting Organic Liquids And Their Aqueous Solutions In A Film Boiling Reactor
… volume is established around a horizontal heater tube (Nickel Alloy-Inconel 600) that is immersed in the aqueous bulk liquid. Chemical reactions are promoted within the vapor layer due to large temperature gradients inherent to film boiling. Product gas flow rates and chemical composition are …
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Effects of surface parameters on boiling heat transfer phenomena
… been done for flow boiling. Using a cylindrical tube pre-coated with Alumina nanoparticles coated via boiling induced deposition, CHF of water was found to enhance up to 40% compared to that of the bare tube. This confirms that nanoparticles on the surface is responsible for CHF enhancement for …
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Specifics of forced-convective heat transfer to supercritical CO2 flowing upward in vertical bare tubes
… tests on supercritical CO2 flowing upwards in a bare tube at the MR-1 loop (located in Chalk River) of the former Atomic Energy of Canada Limited (AECL). Normal, deteriorated, and improved heat transfer regimes were covered in the experiments.
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Assessment of FLUENT CFD code as an analysis tool for SCW applications
… wall temperature profiles inside vertical bare tubes with SuperCritical Water (SCW) as the cooling medium. The numerical results are compared with experimental data and 1-D models represented by existing empirical correlations. Analysis of the individual heat-transfer regimes is conducted …
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Flow and Heat Transfer in Tubes with Obstacles
… of heat transfer and pressure loss in heated tubes equipped with flow obstacles by experimentally investigating the axial and circumferential distributions of convective heat transfer in a heated tube, complemented by pressure loss and velocity measurements in an adiabatic pipe flow. The heat …
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Heat transfer coefficients of particulate in tubular heat exchangers
… study explores the heat transfer from heated bare and finned tubular surfaces to particulates in packed bed cross flow. The results from this experiment will be used to help select the type of particulates that will be used. Additionally, these results will assist in estimating heat transfer …