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3 (c) Determine the Heat Flux through iron plate 900 mm thick whose one face is...
QUESTION FOUR Consider the base plate of an 900-W household iron with a thickness of L-0.6...
QUESTION FOUR Consider the base plate of an 900-W household iron with a thickness of L-0.6 cm, base area of A-160 cm2, and the thermal conductivity of k-60 W/m.K. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When stea dy operating itions are reached, the outer surface temperature of the plate is measured to be 112 C. Disregarding any heat loss through the upper part of the iron, (a)...
13.15 The base plate of an ironi (provided by resistance over a base plate cros plate...
13.15 The base plate of an ironi (provided by resistance over a base plate cros plate of an iron is 0.6 cm thick. The plate is subjected to 100 W of power ded by resistance heaters inside the iron, as shown in Figure P13-15). base plate cross-sectional area of 250 cm, resulting in a uniform flux rated on the inside surface. The thermal conductivity of the metal base generated on th is k = 20 W/m- C. The outside ambient...
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 =...
Q. 4: (20 pts) A1-mm-thick copper plate (k = 386 W/m - °C) is sandwiched between...
Q. 4: (20 pts) A1-mm-thick copper plate (k = 386 W/m - °C) is sandwiched between two 5-mm-thick epoxy boards (k = 0.26 W/m - °C) that are 15 cm 20 cm in size. If the thermal contact conductance on both sides of the copper plate is estimated to be 6000 W/m °C, determine the error involved in the total thermal resistance of the plate if the thermal contact conductances are ignored. Copper Epoxy ( Epoxy Dh Heat flow
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...
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...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose wall...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose walls are maintained at a temperature Tw corresponding to that of combustion gases flowing through the fumace (Iw Tp). The stip, whose density, spcific thermal conductivity, and emissivity are 79 kg/m3, cp -640 J/kg K, k 30 W/m K and 0.7, respectively, is to be heated from 300°C to 600°C Furnace walls, Combustion gases For a unifom convection coefficient of h-100 W/m2...
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...
A large 35 mm thick slab of material has surface temperatures of 318.8 degrees K and...
A large 35 mm thick slab of material has surface temperatures of 318.8 degrees K and 303.2 degrees K, and heat flux through the material of 35.1 W/m^2. Calculate the thermal conductivity of the slab.
A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal...
A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal conductivity is k0.15 W/m-K. Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. If the insulated wire is exposed to a medium at T 30°C with a heat transfer coefficient of h 24 W/m2 K, determine the temperature at the interface of the wire and the plastic cover...
QUESTION FOUR Consider the base plate of an 900-W household iron with a thickness of L-0.6 cm, base area of A-160 cm2, and the thermal conductivity of k-60 W/m.K. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When stea dy operating itions are reached, the outer surface temperature of the plate is measured to be 112 C. Disregarding any heat loss through the upper part of the iron, (a)...
13.15 The base plate of an ironi (provided by resistance over a base plate cros plate of an iron is 0.6 cm thick. The plate is subjected to 100 W of power ded by resistance heaters inside the iron, as shown in Figure P13-15). base plate cross-sectional area of 250 cm, resulting in a uniform flux rated on the inside surface. The thermal conductivity of the metal base generated on th is k = 20 W/m- C. The outside ambient...
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 =...
Q. 4: (20 pts) A1-mm-thick copper plate (k = 386 W/m - °C) is sandwiched between two 5-mm-thick epoxy boards (k = 0.26 W/m - °C) that are 15 cm 20 cm in size. If the thermal contact conductance on both sides of the copper plate is estimated to be 6000 W/m °C, determine the error involved in the total thermal resistance of the plate if the thermal contact conductances are ignored. Copper Epoxy ( Epoxy Dh Heat flow
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...
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...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose walls are maintained at a temperature Tw corresponding to that of combustion gases flowing through the fumace (Iw Tp). The stip, whose density, spcific thermal conductivity, and emissivity are 79 kg/m3, cp -640 J/kg K, k 30 W/m K and 0.7, respectively, is to be heated from 300°C to 600°C Furnace walls, Combustion gases For a unifom convection coefficient of h-100 W/m2...
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...
A 2.2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal conductivity is k0.15 W/m-K. Electrical measurements indicate that a current of 13 A passes through the wire and there is a voltage drop of 8 V along the wire. If the insulated wire is exposed to a medium at T 30°C with a heat transfer coefficient of h 24 W/m2 K, determine the temperature at the interface of the wire and the plastic cover...
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