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Showing 1 to 20 of 289 for “"heat transfer coefficient"”.
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Laminar flow with an axially varying heat transfer coefficient
A theoretical study of convective heat transfer is presented for a laminar flow subjected to an axial variation in the external heat transfer coefficient (or dimensionless Biot number). Since conventional techniques fail for a variable boundary condition parameter, a variable eigenfunction approach …
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Wall Heat Transfer Coefficient in a Molten Salt Bubble Column
… reactors are simple construction, good mass and heat transfer, absence of moving parts and low operating costs. High heat transfer is important in reactors when high thermal duties are required. An appropriate measurement of the heat transfer coefficient is of primary importance for designing …
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Infrared Thermography Techniques for Flow Visualisation and Heat Transfer Coefficient Measurement
… component is critical for predicting loss and heat transfer in design. Despite this importance, practical computational methods that predict boundary layer state remain unreliable thanks to the sparse, scattered data on which they are tuned. There is a need for experimental methods that can …
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Local heat transfer coefficient in a baffled shell and tube heat exchanger
Local shell side coefficient measurements in the end conpartments of a model shell and tube heat exchanger have been made using an electrochemical technique. Limited data are also reported far the second compartment. The end compartment average coefficients have been found to be smaller than …
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Studies of Convective Heat Transfer Coefficient Enhancement in Two-Phase, Non-Boiling Flow
… has been conducted to determine the heat transfer coefficient in a non-boiling, two-component, two-phase flow. Both upflow and downflow of air-water mixtures were studied in a 1 inch pipe. The superficial water velocities ranged from 0.40 to 3.24 m/s with the corresponding Reynolds …
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Internal flow subjected to an axial variation of the external heat transfer coefficient
… to an axial variation of the external convection coefficient is presented. Since the variable boundary condition parameter causes the problem to become nonseparable, conventional techniques do not apply. Instead, the Green's function technique is used to convert the governing partial differential …
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Enhancement of heat transfer coefficient using nanofluids for multi-stage flash desalination (MSF) plant
… enhancement of thermal conductivity and local heat transfer coefficient, under laminar and turbulent flow regimes, of water-based spherical Al<sub>2</sub>O<sub>3</sub>, CuO, and Fe<sub>2</sub>O<sub>3</sub> nanofluids have been experimentally investigated for the improvement of the thermal …
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Application of machine learning for predicting heat transfer coefficient in dropwise condensation of steam
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Heat Transfer Coefficient and Adiabatic Effectiveness Measurements for an Internal Turbine Vane Cooling Feature
… entrance increased the area-averaged heat transfer by a factor of three, relative to an obstructed channel, over a Reynolds range of 5,000 to 15,000.
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Formulation & Thermophysical Analysis of a Beeswax Microemulsion & The Experimental Calculation of its Heat Transfer Coefficient
… PCMs have the ability to not only store Sensible Heat (SH) within a given temperature range, but also store large amounts of Latent Heat (LH) as they undergo a phase change, whether it is from solid to liquid or liquid to gas. This investigation examines the preparation of a beeswax microemulsion, …
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An Investigation of Heat Transfer Coefficient and Film Cooling Effectiveness in a Transonic Turbine Cascade
… of the film cooling effectiveness and heat transfer coefficient of a two-dimensional turbine rotor blade in a linear transonic cascade. Experiments were performed in Virginia Tech's Transonic Cascade Wind Tunnel with an exit Mach number 0f 1.2 and an exit Reynolds numbers of 5x106 to …
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Impact of vertical internals on the hydrodynamics and heat transfer coefficient in a gas-solid fluidized bed
… the impact of the dense vertical immersed heat exchanging tubes on the gas and solids hydrodynamic characteristics, flow regime, pressure drop, and heat transfer in a 0.14 m inside diameter gas-solid fluidized bed column of. Two sizes of vertical internal tube bundles (0.0127 and 0.0254 m) …
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Numerical investigation of the convective heat transfer coefficient of the human body using a representative cylindrical model
… a framework for determining the convective heat transfer co-efficient from a cylindrical model that can easily be adaptable to more complex geometry - more specifically the human body geometry. Analysis of the model under forced convection airflow conditions between the transition velocity …
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Effects on Heat Transfer Coefficient and Adiabatic Effectiveness in Combined Backside and Film Cooling with Short-Hole Geometry
Heat transfer experiments were done on a flat plate to study the effect of internal counter-flow backside cooling on adiabatic film cooling effectiveness and heat transfer coefficient. In addition, the effects of density ratio (DR), blowing ratio (BR), diagonal length over diameter (L/D) ratio, and …
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Effect of combined nanoparticle and polymeric dispersions on critical heat flux, nucleate boiling heat transfer coefficient, and coating adhesion
… and polymeric dispersion coating. The critical heat flux (CHF) values and nucleate boiling heat transfer coefficients (HTC) of nickel wires pre-coated using 1.0% alumina, 0.1% alumina, 500ppm polyallylamine hydrochloride (PAH), and 0.1% alumina combined with 500ppm PAH dispersions were …
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An investigation of the variation of the heat transfer coefficient in natural convection due to boundary layer interaction in adjacent vertical plates
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1961
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