Results 241 to 250 of about 3,572,422 (285)

Forced-Air Cooling Systems

1990
The increasing demand in subminiaturization and microminiaturization of electronic equipment has inevitably brought about increases in component and package densities. “Natural” cooling (heat sinks, free-air radiation, and natural convection) is no longer adequate for maintenance of operating temperatures within safe, or optimum, ranges.
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Forced-oil forced-air cooled transformer problems

Electrical Engineering, 1951
THE ADOPTION of forced-oil forced-air cooling for large power transformers by the electrical industry has created a new problem for the operator of the equipment. The experience of this large utility has been that the supplier has not furnished a self-cooled rating for his product.
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Heat transfer analysis of air cooling in forced air and forced convection PEM fuel cells

2012 International Energy and Sustainability Conference (IESC), 2012
The optimum operating temperature of a Polymer Electrolyte Membrane (PEM) fuel cell is approximately 80°C. The electrochemical reaction inside a PEM fuel cell stack produces approximately 50% of electrical and 50% of heat energy. The power output of the fuel cell stack is significantly influenced by the humidity and temperature inside the power stack ...
Y. Hung, H. Tawfik, D. Mahajan, M. Zoghi
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General formula of cooling curve for horticultural products on forced air pre‐cooling

Journal of Food Process Engineering, 2022
AbstractThe air velocity played a key role in controlling the cooling process of forced air pre‐cooling for horticultural products. However, the present general formula of cooling curve for horticultural products on forced air pre‐cooling did not reflect the influence of the air velocity on cooling rate for horticultural products on forced air pre ...
Da Wang, Binguang Jia, Yanhua Lai, Shifa Hu   +3 more
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Operating Problems of Forced-Oil Forced-Air-Cooled Transformers

Transactions of the American Institute of Electrical Engineers, 1951
The adoption of forced-oil forced-air cooling for large power transformers by the electric industry has created a new problem for the operator of the equipment. The experience of this large utility has been that the supplier has not furnished a self-cooled rating for his product.
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Suction vs. Pressure Forced Air Cooling

IEEE Transactions on Product Engineering and Production, 1965
The cooling of miniaturized equipment is usually handled by forced air flow. An investigation was made of the merits of suction vs pressure cooling, to find an effective cooling design for a certain module assembly. This showed that suction cooling has certain advantages because of the air flow escape from the circuitry section to adjacent spaces.
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Cooling characteristics of forced air convection in electronic cabinets

[1992 Proceedings] Intersociety Conference on Thermal Phenomena in Electronic Systems, 2003
Summary form only given. Air-cooled forced convection in vertical channels installed in electronic cabinets has been investigated experimentally and numerically. The heat transfer characteristics were determined experimentally and numerical simulation was performed using a finite-difference method for the electronic components based on the experimental
W.T. Kim, J.H. Park, H.G. Rho, K.S. Kim
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Modern forced-air cooling of power transformers

Electrical Engineering, 1953
The available types of forced-air fans and control methods, their application to power transformers, and the advantages of each type for specific installations are discussed.
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Forced-air cooled strontium-ion recombination laser

Optics Communications, 1991
Abstract The performance of a small (12.6 mm bore) Sr + discharge-afterglow recombination laser (λ 430.5 nm) is assessed with free convection cooling of the laser tube, and with forced-air convection cooling. It is found that the application of forced-air cooling enables a 120% higher input-power loading for optimum tube-wall temperature, that ...
J.W. Bethel, C.E. Little
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Study on forced air convection cooling for electronic assemblies

Frontiers of Energy and Power Engineering in China, 2008
The slotted fin concept was employed to improve the air cooling performance of plate-fin in heat sinks. Numerical simulations of laminar heat transfer and flow pressure drop were conducted for the integral plate fin, discrete plate fin and discrete slotted fin heat sinks. It is found that the performance of the discrete plate fin is better than that of
Bin Li, Wenquan Tao, Yaling He
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