Consider a very long aluminum fin (k = 237W/m-K) fin, with the temperature at the end of the fin essentially that of the surrounding air. This fin has a diameter of lcm, and is attached to a surface at 80°C. The surface is exposed to ambient air at 22°C with a heat transfer coefficient of 15W/m2-K. Estimate:
a) The fin temperature at a distance of 5cm from the base;
b) The rate of heat loss from the entire fin;
c) The effectiveness of the fin

QUESTION 3 Consider a very long rectangular fin attached to a flat surface such that the temperature at the end of the finis essentially that of the surrounding air, le 10°C its width is 10 cm; thickness is 2 mm: thermal conductivity is 150 Wim K and base temperature is 100'C. The heat transfer coefficient is 20 W/ m K Estimate (a) the fin temperature at a distance of 5.0 cm from the base in c to the nearest degree...
Problem 2 A 4 mm diameter and 20 cm long aluminum fin (k 240 W/m-K) is attached to a surface. If the heat transfer coefficient is 12 W/m2 K, determine the percent error in the rate of heat transfer from the fin when the infiniely long fin assumption is used nstead of the adiabatic fin tip assumption. D-4 mm L- 10 cm Fig. 2 fin
3.1 The height, length, and thickness of a longitudinal fin of 6061 aluminum are 3.2 cm, 15 cm, and 2 mm, re- spectively. If the fin base is maintained at a temperature of 55°C and the surrounding air temperature is 20°C, where the heat-transfer coefficient is 34 W/m2.K, what is the heat transfer from the fin?
a rectangular fin (k= 235w/m*K) is attached to a wall and has a length of 5 cm, a width of 10 cm, and a thickness of 5 mm. the surface temperature of the wall is 350 degrees Celcius and the ambient air is 25 degrees celcius. what is the efficiency, the heat transfer rate, and the fin effectiveness? assume an adiabatic fin tip condition and a convection heat transfer coefficient of 154 W/m^2 * K
1) An aluminum fin is attached to a warm surface at a steady temperature Tb. The fin is 8mm in diameter and 130mm in length, and is exposed to air at a constant temperature Tamb with a convection coefficient of 15 Determine the percent error in the rate of heat transfer when the infinitely long fin assumption is used instead of the adiabatic fin tip assumption. (20 points)
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.
Consider a rectangular fin (k = 180 W/m-K) of length L =10 mm, thickness i =1 mm, and width w» t. The base temperature of the finis Ty = 150°C, and the finis exposed to a fluid of temperature T, =25°C. Assuming a uniform convection coefficient of h = 110 W/m2.K over the entire fin surface, determine the fin heat transfer rate per unit width 4; efficiency ng: effectiveness es, thermal resistance per unit width and the tip temperature T...
Problem 1 (20 marks): A 1-m x 1-m surface at 100 °C is to be cooled by attaching to it 5-cm long, 0.25- cm-thick square aluminum fins (k = 237 W/m- K), with an edge-to-edge distance between the fins of 0.25 cm. The temperature of the fin tip is the same as surrounding medium at 30°C, und the heat transfer coefficient on the surfaces is 35 W/m2 K. Determine: temperature at distance of 2 cm away from the base the...
W kg m-K m3 Two-Dimensional Steady and transient Conduction - Heat Sink Aluminum fins with triangle profiles (k = 290 p = 2800 ,C= 900 shown in the accompanying figure, are used to remove heat from a surface kg-K whose temperature is T, = 150°C. The temperature of the surrounding air is 20°C. The natural heat transfer coefficient associated with the surrounding air is h = 190, Determine the temperature distribution along a fin. w m-K Air To, h 20...