Results 271 to 280 of about 74,264 (312)
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The Effect of Cowling on the Local Cooling Effectiveness of Engine Air-Cooled Cylinders
SAE Technical Paper Series, 1992<div class="htmlview paragraph">In this work, the effect of providing air-cooled cylinders with cowlings on the local cooling effectiveness was investigated. Cast-iron specimens representing air-cooled cylinders were manufactured with rectangular and trapezoidal fins.
M.S. Radwan, M.A. Shahin
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Numerical Study of the Effect of Blowing Angle on Cooling Effectiveness of an Effusion Cooling
Volume 3: Turbo Expo 2004, 2004The paper numerically investigates the influences of the blowing angle α of coolant flow on the cooling effectiveness of effusion cooling of a plate. Nine cases were studied which cover three blowing angles of α = 30°, 60°, 90° and for each angle three blowing ratios of M = 0.5, 1.0, 2.0 are calculated, respectively.
Yaping Hu, Honghu Ji
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Effect of Hole Shape on Blade Cooling Effectiveness
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010The high temperature conditions under which turbine blades operate pose a constraint on their service lifetime. One industrial solution is to apply the film cooling and its effectiveness is generally determined by flow condi tions, cooling hole geometry shapes and its orientations.
Khan, J +3 more
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Transactions of the Canadian Society for Mechanical Engineering, 1991
Measurements of the flow field and film cooling effectiveness downstream of a two-dimensional inclined slot were made. A two-dimensional numerical model solving the transport equations in curvilinear orthogonal coordinate system was developed to simulate film cooling process. Comparisons were made between numerical and experimental results.
I. Gartshore, M. Salcudean, P. Matys
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Measurements of the flow field and film cooling effectiveness downstream of a two-dimensional inclined slot were made. A two-dimensional numerical model solving the transport equations in curvilinear orthogonal coordinate system was developed to simulate film cooling process. Comparisons were made between numerical and experimental results.
I. Gartshore, M. Salcudean, P. Matys
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The effect of pre-cooling intensity on cooling efficiency and exercise performance
Journal of Sports Sciences, 2010Although pre-cooling is known to enhance exercise performance, the optimal cooling intensity is unknown. We hypothesized that mild cooling opposed to strong cooling circumvents skin vasoconstriction and thermogenesis, and thus improves cooling efficiency reflected in improved time to exhaustion. Eight males undertook three randomized trials, consisting
Bogerd, N. +4 more
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Cryocrystallography: effect of cooling medium on sample cooling rate
Journal of Applied Crystallography, 1998The rates of cooling of small samples with cold N2gas (100 K), liquid N2(77 K) and liquid propane (100 K) have been measured. The samples were one bare Cu-constantan thermocouple and one coated with a 0.25 mm layer of silicone rubber cement. Gas cooling yielded the lowest rate, liquid N2the highest.
Linda J. Walker +2 more
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Physics Letters A, 1973
Abstract Adiabatic rotation of 4 He in packed powder is shown to provide a new cooling effect. Using a simplified model and some experimental parameters it is estimated that (Δ T / T ) 1°K ≈-0.25°K.
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Abstract Adiabatic rotation of 4 He in packed powder is shown to provide a new cooling effect. Using a simplified model and some experimental parameters it is estimated that (Δ T / T ) 1°K ≈-0.25°K.
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Oil Cooling - Its Effect on Engine Cooling Systems
SAE Technical Paper Series, 1963<div class="htmlview paragraph">Selection of a water or air cooling medium for engine systems depends on the availability of the medium, the design of the engine, and the conditions under which the system operates. This article presents a number of cases for both water and air cooled systems, compares their characteristics, and describes the ...
H. D. Huggins, Nelson Jarrett
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Subminiature Cool Pad Applying Sorption Cooling Effect
HVAC&R Research, 2006This paper describes the conceptual development and idea verification of a subminiature portable cooler that does not necessitate any precooling nor any external energy supply during the process of cooling. The basic principle of the cooling mechanism is the vaporization of water and subsequent cooling due to the evaporative latent heat loss.
Dae-Young Lee, Yong-Sheen Hwang
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Cooling effects of paints [PDF]
Rising environmental concerns has led to research on reducing energy usage for refrigerated containers when transporting perishable food. Most containers are made of stainless steel which is an excellent conductor of heat and thus increases the energy usage for refrigeration of perishable food.
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