Results 281 to 290 of about 328,365 (310)
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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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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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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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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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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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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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2010
Direct sun can generate the same heat as a single bar radiator over each square meter of a surface. Shading can cool up to 90% of this heat. The big problem is that sunlight is a direct source of heat and the radiant heat from the sun passes through glass and is absorbed by building elements and furnishings, which then re-radiate it.
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Direct sun can generate the same heat as a single bar radiator over each square meter of a surface. Shading can cool up to 90% of this heat. The big problem is that sunlight is a direct source of heat and the radiant heat from the sun passes through glass and is absorbed by building elements and furnishings, which then re-radiate it.
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Effects of Cooling and Heating
Abstract Body temperature is tightly regulated within a few tenths of a degree Celsius by the hypothalamus; deviations of a few degrees can have a profound impact on cellular metabolism. The human body maintains an average core temperature of 36.5–37.5°C via signals to the hypothalamus.Madiha Syed, Pinxia Chen
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