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Problem 1 (20 marks): A 1-m x 1-m surface at 100 °C is to be cooled...
please show all work, thanks 2. A hot surface at 100 °C needs to be cooled...
please show all work, thanks
2. A hot surface at 100 °C needs to be cooled by attaching one 3-cm long, 0.25-cm-diameter pin (circular cross-section) fins with k =237 W/mK. The ambient air at a temperature of 30 °C, and there is a cross flow to the pins, of 1 m/s (air velocity). The fin is INSULATED at the end. a (15%). What is the heat transfer rate for one fin? b (15%). What is the temperature at the tip?
2. A hot surface at 120°C is cooled by attaching a 6-cm-long, 0.6-cm-diameter pin fin (k...
2. A hot surface at 120°C is cooled by attaching a 6-cm-long, 0.6-cm-diameter pin fin (k 220 W/m K, a 97.1 x 10 m2/s). The temperature of the surrounding air is 15°C, and the heat transfer coefficient on the fin surface is 30 W/m2 K. Assuming one-dimensional heat conduction along the fin, an adiabatic tip, and taking the nodal spacing to be Ax 3 cm, determine the tip temperature.
Question (1) (4 Points) In many industrial applications, fins are currently being used to increase the...
Question (1) (4 Points) In many industrial applications, fins are currently being used to increase the rate of heat transfer from hot surfaces. In one of these applications as shown in the figure below, a 0.3 mx 0.3 m hot surface at a base temperature of 125°C is cooled by attaching 2-cm-long, 0.1-cm-diameter met pin fins (k = 310 W/(mK)) to it, with a center-to-center distance of 0.3 cm. The temperature of the T = 35°C, and the heat transfer...
One end of a long rod 3 cm in diameter is inserted into a furnace with the
One end of a long rod 3 cm in diameter is inserted into a furnace with the (3 outer end projecting into the outside air. Once the steady state is reached the temperature of the rod is measured at two points, 15 cm apart and found to be 140°C and 100°C, when the atmospheric air is at 30°C with convection coefficient of 20 W/m2.K. Calculate the thermal conductivity of *.the rod material Consider a stainless steel spoon(k = 15.1 W/m.K), partially...
Please show all work Turbine blade k-17 WIm-K p=11 cm, L = 53 cm Ac-5.13 cm...
Please show all work
Turbine blade k-17 WIm-K p=11 cm, L = 53 cm Ac-5.13 cm -T 450°C . A plane wall with surface temperature of 350°Cis at- tached with straight rectangular fins (k = 235 win-K). The fins are exposed to an ambient air condition of 25°C and the convection heat transfer coefficient is 154 W/m2-K. Each fin has a length of 50 mm, a base of 5 mm thick and a width of 100 mm. Determine the efficiency,...
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer...
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are maintained at a temperature of 120°C. Circular aluminum alloy fins (k = 180 W/m.) of outer diameter 6 cm and constant thickness t 2 mm are attached to the tube, as shown in the figure below. The space between the fins is 3 mm, and thus there are 200 fins per meter length of the tube....
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...
1 answer & continue > The upper surface of a 60-cm-thick solid plate (k = 237...
1 answer & continue > 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. The thermal conductivity of water at the film temperature of T; = (1,1770) =(60°C + 20°C)/2 = 40°C is kfluid =...
finite element method 2. Aluminum fins with rectangular profiles (5 mm wide and 1 mm thick) are used to remove heat...
finite element method
2. Aluminum fins with rectangular profiles (5 mm wide and 1 mm thick) are used to remove heat from a surface whose temperature is 150°C. The temperature of ambient air is 20°C. The thermal conductivity of aluminium is 168 W/m.K. The natural convective coefficient associated with the surrounding air is 35 W/m2.K. The fins are 150 mm long and the heat loss from the tip of the fin may be neglected. (a) Determine the temperature distribution along...
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...
please show all work, thanks
2. A hot surface at 100 °C needs to be cooled by attaching one 3-cm long, 0.25-cm-diameter pin (circular cross-section) fins with k =237 W/mK. The ambient air at a temperature of 30 °C, and there is a cross flow to the pins, of 1 m/s (air velocity). The fin is INSULATED at the end. a (15%). What is the heat transfer rate for one fin? b (15%). What is the temperature at the tip?
2. A hot surface at 120°C is cooled by attaching a 6-cm-long, 0.6-cm-diameter pin fin (k 220 W/m K, a 97.1 x 10 m2/s). The temperature of the surrounding air is 15°C, and the heat transfer coefficient on the fin surface is 30 W/m2 K. Assuming one-dimensional heat conduction along the fin, an adiabatic tip, and taking the nodal spacing to be Ax 3 cm, determine the tip temperature.
Question (1) (4 Points) In many industrial applications, fins are currently being used to increase the rate of heat transfer from hot surfaces. In one of these applications as shown in the figure below, a 0.3 mx 0.3 m hot surface at a base temperature of 125°C is cooled by attaching 2-cm-long, 0.1-cm-diameter met pin fins (k = 310 W/(mK)) to it, with a center-to-center distance of 0.3 cm. The temperature of the T = 35°C, and the heat transfer...
Please show all work
Turbine blade k-17 WIm-K p=11 cm, L = 53 cm Ac-5.13 cm -T 450°C . A plane wall with surface temperature of 350°Cis at- tached with straight rectangular fins (k = 235 win-K). The fins are exposed to an ambient air condition of 25°C and the convection heat transfer coefficient is 154 W/m2-K. Each fin has a length of 50 mm, a base of 5 mm thick and a width of 100 mm. Determine the efficiency,...
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are maintained at a temperature of 120°C. Circular aluminum alloy fins (k = 180 W/m.) of outer diameter 6 cm and constant thickness t 2 mm are attached to the tube, as shown in the figure below. The space between the fins is 3 mm, and thus there are 200 fins per meter length of the tube....
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...
1 answer & continue > 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. The thermal conductivity of water at the film temperature of T; = (1,1770) =(60°C + 20°C)/2 = 40°C is kfluid =...
finite element method
2. Aluminum fins with rectangular profiles (5 mm wide and 1 mm thick) are used to remove heat from a surface whose temperature is 150°C. The temperature of ambient air is 20°C. The thermal conductivity of aluminium is 168 W/m.K. The natural convective coefficient associated with the surrounding air is 35 W/m2.K. The fins are 150 mm long and the heat loss from the tip of the fin may be neglected. (a) Determine the temperature distribution along...
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...
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