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During its manufacture, plate glass at 600°C is cooled by passing air over its surface such...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k = 237 W/ mK. (T..+) The thermal conductivity of water at the film temperature of T, = =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/mK. 1. value...
A hot brass plate is having its upper surface cooled by impinging jet of the air...
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 =
Δy = 2.5 cm and left side...
During a cooling process of a stainless steel plate, water at 30°C flows over this plate...
During a cooling process of a stainless steel plate, water at 30°C flows over this plate at a velocity of 0.02 m/s. The stainless steel plate (k=19 W/mK) has 1.15 meter long in the flow direction) and the plate width is 0.7 meter. The plate has a uniform surface temperature of 70°C. Determine, 1. The average friction coefficient 2. The total drag force due to friction (N) 3. The average convection heat transfer 2. coefficient (W/m K) 4. The steady...
1. A plate is placed in a large vacuum chamber to control its cooling rate. To...
1. A plate is placed in a large vacuum chamber to control its cooling rate. To prevent cracking, the temperature gradient in the plate cannot exceed 15 K/mm at any point during cooling. The plate is initially at 900 K with an emissivity of 0.8 and thermal conductivity of 1.5 W/mK. Assume that one of the surface of the plate is insulated and the other is exposed to the chamber, and the chamber walls are considered as black surface. Apply...
Clear handwriting plz 1. A plate is placed in a large vacuum chamber to control its...
Clear handwriting plz
1. A plate is placed in a large vacuum chamber to control its cooling rate. To prevent cracking, the temperature gradient in the plate cannot exceed 15 K/mm at any point during cooling. The plate is initially at 900 K with an emissivity of 0.8 and thermal conductivity of 1.5 W/mK. Assume that one of the surface of the plate is insulated and the other is exposed to the chamber, and the chamber walls are considered as...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation,...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V< 0.33 m/s is determined experimentally and is expressed as h = 5.05 KairRe131D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m°C. The thermal conductivity and the kinematic...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation,...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V 0.33 m/s is determined experimentally and is expressed as h=5.05 kairRe13/D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation,...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V< 0.33 m/s is determined experimentally and is expressed as h=5.05 kairRe13/D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. (T1+T) The thermal conductivity of water at the film temperature of Tf =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/m.K. = 2 1. value: 3.00...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation,...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11</<0.33 m/s is determined experimentally and is expressed as h= 5.05 kairRe13/D, where the diameter Dis 0.09 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k = 237 W/ mK. (T..+) The thermal conductivity of water at the film temperature of T, = =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/mK. 1. value...
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 =
Δy = 2.5 cm and left side...
During a cooling process of a stainless steel plate, water at 30°C flows over this plate at a velocity of 0.02 m/s. The stainless steel plate (k=19 W/mK) has 1.15 meter long in the flow direction) and the plate width is 0.7 meter. The plate has a uniform surface temperature of 70°C. Determine, 1. The average friction coefficient 2. The total drag force due to friction (N) 3. The average convection heat transfer 2. coefficient (W/m K) 4. The steady...
1. A plate is placed in a large vacuum chamber to control its cooling rate. To prevent cracking, the temperature gradient in the plate cannot exceed 15 K/mm at any point during cooling. The plate is initially at 900 K with an emissivity of 0.8 and thermal conductivity of 1.5 W/mK. Assume that one of the surface of the plate is insulated and the other is exposed to the chamber, and the chamber walls are considered as black surface. Apply...
Clear handwriting plz
1. A plate is placed in a large vacuum chamber to control its cooling rate. To prevent cracking, the temperature gradient in the plate cannot exceed 15 K/mm at any point during cooling. The plate is initially at 900 K with an emissivity of 0.8 and thermal conductivity of 1.5 W/mK. Assume that one of the surface of the plate is insulated and the other is exposed to the chamber, and the chamber walls are considered as...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V< 0.33 m/s is determined experimentally and is expressed as h = 5.05 KairRe131D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m°C. The thermal conductivity and the kinematic...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V 0.33 m/s is determined experimentally and is expressed as h=5.05 kairRe13/D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11<V< 0.33 m/s is determined experimentally and is expressed as h=5.05 kairRe13/D, where the diameter Dis 0.1 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. (T1+T) The thermal conductivity of water at the film temperature of Tf =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/m.K. = 2 1. value: 3.00...
During air cooling of oranges, grapefruit, and tangelos, the heat transfer coefficient for combined convection, radiation, and evaporation for air velocities of 0.11</<0.33 m/s is determined experimentally and is expressed as h= 5.05 kairRe13/D, where the diameter Dis 0.09 m. Oranges are cooled by refrigerated air at 5°C and 1 atm at a velocity of 0.3 m/s. Given: The thermal conductivity of the orange is given to be k = 0.50 W/m-°C. The thermal conductivity and the kinematic viscosity of...
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