A vertical plate has a uniform surface temperature of 20°C. The length of the plate is 18cm. For ambient air temperature of 45°C, find the average heat transfer coefficient for one side of the plate: a) using analytical method equations (Eq. 9.21), b) using empirical correlation (Eq. 9.27).
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A vertical plate has a uniform surface temperature of 20°C. The length of the plate is 18cm. For ...
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A plate of thickness L is initially at uniform temperature Ti. A second plate of the same material of thickness L2 is initially at uniform temperature T2. At t20 the two plates are fastened together with a perfect contact at the interface. Simultaneously, the surface of one plate is heated with uniform flux qo and the opposite surface begins to exchange heat by convection with the surroundings. The heat transfer coefficient is h and the ambient temperature is T Determine...
Your answer is incorrect. Try again. A square aluminum plate 5 mm thick and 160 mm on a side is h...
Your answer is incorrect. Try again. A square aluminum plate 5 mm thick and 160 mm on a side is heated while vertically suspended in quiescent air at 40°C. Determine the average heat transfer coefficient for the plate when its temperature is 20°C by two methods: (a) using results from the similarity solution to the boundary layer equations, and (b) using results from an empirical correlation. Evaluate properties of air at the film temperature (a) Determine the average heat transfer...
7. Consider a thin plate of 20 cm by 20 cm is standing vertically in air....
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table A-13 heat transfer book Consider a thin plate of 20 cm by 20 cm is...
table A-13 heat transfer book
Consider a thin plate of 20 cm by 20 cm is standing vertically in air. One side of the plate is insulated. The plate surface temperature is 50°C. The room air temperature where the plate is located is 20'C. Determine: (a) Is the flow laminar or turbulent? (b) What Nu number correlation will you use to find h? Find Nu. (C) Find the convection heat transfer coefficient (h) (d) Find the rate of convection heat...
9-22 A 0.5-m-long thin vertical plate is subjected to uniform heat flux on one side, while...
9-22 A 0.5-m-long thin vertical plate is subjected to uniform heat flux on one side, while the other side is exposed to cool air at 5°C. The plate surface has an emissivity of 0.73, and its midpoint temperature is 55°C. Determine the heat flux sub- jected on the plate surface.
A hot brass plate is having its upper surface cooled by impinging jet of the air...
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impinging jet of the air at temperature of 15 oC and convection
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k=220 w/mK had a uniform initial temperature of 650 oC, and lover
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A square aluminum plate 5 mm thick and 150 mm on a side is heated while...
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1. Consider an opaque, horizontal square plate (Im by 1m) with an electrical heater on its backside. The front side is exposed to ambient quiescent air that is at 20° C, solar irradiation (from...
1. Consider an opaque, horizontal square plate (Im by 1m) with an electrical heater on its backside. The front side is exposed to ambient quiescent air that is at 20° C, solar irradiation (from sun at 5800° K) of 600 W/m2, and an effective sky temperature of -40° C. The plate surface temperature is kept at Ts 60 C (at steady state condition). Calculate natural convection heat transfer coefficient from the plate. (10 points) What is the electrical power (W/m2)...
8) Air flows over a flat plate at a velocity of 20 m/s and a temperature...
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An aluminum alloy (2024) plate, heated to a uniform temperature of 227°C, is allowed to cool while vertically suspended in a room where the ambient air and surroundings are at 27°C. The plate is 0.3...
An aluminum alloy (2024) plate, heated to a uniform temperature of 227°C, is allowed to cool while vertically suspended in a room where the ambient air and surroundings are at 27°C. The plate is 0.3 m square with a thickness of 15 mm. a) calculate the rate of heat transfer from the plate to the surrounding air. b) Develop an expression for the time rate of change of the plate temperature, assuming the temperature to be uni form at any...
Your answer is incorrect. Try again. A square aluminum plate 5 mm thick and 160 mm on a side is heated while vertically suspended in quiescent air at 40°C. Determine the average heat transfer coefficient for the plate when its temperature is 20°C by two methods: (a) using results from the similarity solution to the boundary layer equations, and (b) using results from an empirical correlation. Evaluate properties of air at the film temperature (a) Determine the average heat transfer...
7. Consider a thin plate of 20 cm by 20 cm is standing vertically in air. One side of the plate is insulated. The plate surface temperature is 50°C. The room air temperature where the plate is located is 20°C. Determine: (a) Is the flow laminar or turbulent? (b) What Nu number correlation will you use to find h? Find Nu. (c) Find the convection heat transfer coefficient (h) (d) Find the rate of convection heat transfer from the plate.
table A-13 heat transfer book
Consider a thin plate of 20 cm by 20 cm is standing vertically in air. One side of the plate is insulated. The plate surface temperature is 50°C. The room air temperature where the plate is located is 20'C. Determine: (a) Is the flow laminar or turbulent? (b) What Nu number correlation will you use to find h? Find Nu. (C) Find the convection heat transfer coefficient (h) (d) Find the rate of convection heat...
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A hot brass plate is having its upper surface cooled by
impinging jet of the air at temperature of 15 oC and convection
coefficient of k=180, 190, 200, 210 220 and 230 W/m2 oK. The 20-cm
wide and 10-cm length brass plate (ρ=8530 kg/m3, and Cp=380 J/kg K.
k=220 w/mK had a uniform initial temperature of 650 oC, and lover
surface of the plat is well insulated. Using uniform node for Δx =
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