Results 221 to 230 of about 8,278 (266)

Evaluating convective heat transfer coefficients using neural networks

International Journal of Heat and Mass Transfer, 1996
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Jambunathan, K., Hartle, S. L., Ashforth-Frost, S., Fontama, V. N.   +3 more
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Time series estimation of convective heat transfer coefficients

Building and Environment, 1994
Abstract In this work a novel methodology for the estimation of convective heat transfer coefficients is presented. The convective heat transfer coefficients are estimated using novel and existing time series methods, and are compared with those obtained from the standard ‘ratio of means’ approach, and those given in the CIBSE Guide.
Irving, AD, Dewson, T, Hong, G, Day, BF
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Approximation of an optimal convective heat transfer coefficient

Optimal Control Applications and Methods, 2006
The problem studied in this paper is that of a heat source (electronic chip) placed on the top surface of a flat thermal spreader which is cooled by convection on the opposite surface. An optimal convection heat transfer coefficient yielding maximal heat removal from the chip is found using an optimal control technique.
F. Simionescu, A.J. Meir, D.K. Harris
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Errors associated with interferometric measurement of convective heat transfer coefficients

Applied Optics, 1977
Errors caused by refraction and end effects in interferometric systems are studied analytically. Both errors are estimated for Mach-Zehnder and differential interferometers when these instruments were used to measure convective heat transfer coefficients in air and water. Both errors were found to be larger for the Mach- Zehnder interferometer than for
J M, Mehta, W Z, Black
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In Vivo Measurement of Swine Endocardial Convective Heat Transfer Coefficient

IEEE Transactions on Biomedical Engineering, 2004
We measured the endocardial convective heat transfer coefficient h at 22 locations in the cardiac chambers of 15 pigs in vivo. A thin-film Pt catheter tip sensor in a Wheatstone-bridge circuit, similar to a hot wire/film anemometer, measured h. Using fluoroscopy, we could precisely locate the steerable catheter sensor tip and sensor orientation in pigs'
Chanchana, Tangwongsan, James A, Will, John G, Webster, Kenneth L, Meredith, David M, Mahvi   +4 more
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Decoupling Convective and Conductive Heat Transfer Using the Adiabatic Heat Transfer Coefficient

Journal of Electronic Packaging, 1994
In many heat transfer situations, such as those found in the electronics cooling field, more than a single mode of heat transfer occurs. For example, modules on a printed circuit board dissipate heat through convection to the air, through conduction to the board and through radiation to the surroundings.
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Intercomparisons of Experimental Convective Heat Transfer Coefficients and Mass Transfer Coefficients of Urban Surfaces

Boundary-Layer Meteorology, 2005
The convective heat transfer coefficient (CHTC) of an urban canopy is a crucial parameter for estimating the turbulent heat flux in an urban area. We compared recent experimental research on the CHTC and the mass transfer coefficient (MTC) of urban surfaces in the field and in wind tunnels. Our findings are summarised as follows.
Aya Hagishima, Jun Tanimoto, Ken-ich Narita   +2 more
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Measuring heat transfer coefficient in convection reflow ovens

Measurement, 2010
Abstract In this paper, the evaluation of a measurement method is discussed which can determine the heat transfer coefficient in convection reflow ovens. Nowadays the reflow ovens apply forced convection heating with nozzle-matrix blower system. In these ovens the heat transfer coefficients of the heater gas streams determine mainly the efficiency of
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The determination of convective heat transfer coefficient during frying

Journal of Food Engineering, 1999
Abstract The convective heat transfer coefficient during deep-fat frying was determined at different temperatures. In this study, aluminum wool filled with potato mash having a size of 0.05 × 0.05 × 0.003 m 3 was used as a model sample. Frying was performed by fixing the sample vertically to make the system symmetrical.
S. Sahin, S.K. Sastry, L. Bayindirli
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Characterizing convective heat transfer coefficients in membrane distillation cassettes

Journal of Membrane Science, 2017
Abstract Accurate characterization of conductive heat transfer in membrane distillation (MD) is essential for determining membrane permeability, calculating thermal efficiency, and describing the effects of process parameters on permeate flux. This work demonstrates the effect of convective heat transfer on common MD performance metrics, reviews ...
Megan E. Leitch, Gregory V. Lowry, Meagan S. Mauter   +2 more
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