Homework Answers
Please rate.. comment if
doubtful anywhere.. will surely help..
Add Answer to:
Problem 66 2 65 A rectangular fin of type 347 stainless steel is 1 mm thick, 8 mm wide. and 30 mm long. Base temperatur...
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...
Consider a horizontal 6-mm –thick, 100- mm long straight fin fabricated from steel (k = 57,...
Consider a horizontal 6-mm –thick, 100- mm long straight fin fabricated from steel (k = 57, W/m. K, = 0.5). The base temperature of the fin is 150 OC, while the quiescent air and the surrounding are at 25C. Assume the fin tip is adiabatic and assume the average fin surface temperature is = 125 C : a) Draw a clear schematic for the system. b) Estimate the free convection heat transfer coefficient. c) Check this assumption of...
wall with a base A long fin (square in cross-section, 2 mm on one side) projects...
wall with a base A long fin (square in cross-section, 2 mm on one side) projects from a temperature of 80°C. The fin is aluminum, with k 200 W/m-K. At a length of 2 cm, the temperature is measured and found to be 50°C. The surrounding air is at 25°C What is the convective heat transfer coefficient?
Problem 2 A 4 mm diameter and 20 cm long aluminum fin (k 240 W/m-K) is...
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
Consider a rectangular fin (k = 180 W/m-K) of length L =10 mm, thickness i =1...
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...
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...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1 bar under vacuum conditions for which there is an overall temperature drop of 100°C across the plate. What would be effect of loading silicone oil on metallic interface? TABLE 3.1 Thermal contact resistance for (a) metallic interfaces under vacuum conditions and (b) aluminum interface (10-um surface roughness, 105 Nm2 with different interfacial fluids [1 Thermal Resistance, Rzc x 10 (m2-K/W) (a) Vacuum Interface Contact...
Need help for Test corrections thanks so much. [18 pts] Consider you're making pasta and you...
Need help for Test corrections thanks so much.
[18 pts] Consider you're making pasta and you leave your stainless-steel spoon partially immersed in boiling water The handle of your spoon is of rectangular shape (3 mm thick and 60 mm wide) and 0.15 m of the spoon's handle (L) is exposed to the kitchen air temperature of 22 °C. The convective heat transfer coefficient is determined to be 8.9 W/m2K. Determine: 1. 46 Heat transfer rate and the efficiency from...
Problem 3: Ordinary Differential Equations A straight fin of uniform rectangular cross section (0.5 mm x...
Problem 3: Ordinary Differential Equations A straight fin of uniform rectangular cross section (0.5 mm x 100 mm) with a length (L) of 5 cm is attached to a base surface of temperature 110°C (T). The surface of the fin is exposed to a cooling fluid at 20°C (T) with a convection heat transfer coefficient (h) of 15 W/(m²K). The conductivity (k) of the fin material is 400 W/(m.K). (a) Plot the temperature profile along the length of the fin,...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. ...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. 496-497. 20 mm Triangular Al fins are used to remove heat from a surface which is kept at 150°C. The surrounding air is kept at 20°C. The natural heat transfer coefficient associated with the surrounding air is 30 W/m2.K. The thermal conductivity of aluminum is k-168 L W/m.K. Determine the temperature distribution along one fin and determine the total heat loss for one such...
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...
wall with a base A long fin (square in cross-section, 2 mm on one side) projects from a temperature of 80°C. The fin is aluminum, with k 200 W/m-K. At a length of 2 cm, the temperature is measured and found to be 50°C. The surrounding air is at 25°C What is the convective heat transfer coefficient?
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
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...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1 bar under vacuum conditions for which there is an overall temperature drop of 100°C across the plate. What would be effect of loading silicone oil on metallic interface? TABLE 3.1 Thermal contact resistance for (a) metallic interfaces under vacuum conditions and (b) aluminum interface (10-um surface roughness, 105 Nm2 with different interfacial fluids [1 Thermal Resistance, Rzc x 10 (m2-K/W) (a) Vacuum Interface Contact...
Need help for Test corrections thanks so much.
[18 pts] Consider you're making pasta and you leave your stainless-steel spoon partially immersed in boiling water The handle of your spoon is of rectangular shape (3 mm thick and 60 mm wide) and 0.15 m of the spoon's handle (L) is exposed to the kitchen air temperature of 22 °C. The convective heat transfer coefficient is determined to be 8.9 W/m2K. Determine: 1. 46 Heat transfer rate and the efficiency from...
Problem 3: Ordinary Differential Equations A straight fin of uniform rectangular cross section (0.5 mm x 100 mm) with a length (L) of 5 cm is attached to a base surface of temperature 110°C (T). The surface of the fin is exposed to a cooling fluid at 20°C (T) with a convection heat transfer coefficient (h) of 15 W/(m²K). The conductivity (k) of the fin material is 400 W/(m.K). (a) Plot the temperature profile along the length of the fin,...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. 496-497. 20 mm Triangular Al fins are used to remove heat from a surface which is kept at 150°C. The surrounding air is kept at 20°C. The natural heat transfer coefficient associated with the surrounding air is 30 W/m2.K. The thermal conductivity of aluminum is k-168 L W/m.K. Determine the temperature distribution along one fin and determine the total heat loss for one such...
Most questions answered within 3 hours.
-
What mechanisms Drive speciation??
(I.e. what was Dawins theory on the orgin of species, and how...
asked 35 minutes ago -
The manager at a car assembly plant believes that the mean
assembly time for a car...
asked 1 hour ago -
Which of the following is true of electron capture?
A) It decreases the nuclide's mass number...
asked 3 hours ago -
Assuming an efficiency of 43.10%, calculate the actual yield of
magnesium nitrate formed from 114.9 g...
asked 3 hours ago -
The highly pathogenic bacterium Clostridium
perfringens causes gangrene, a disease that results in the
destruction of...
asked 5 hours ago -
In the context of situation analysis, which of the following is
a category for analysis in...
asked 5 hours ago -
In a study of the gas phase decomposition of sulfuryl chloride
at 600 K SO2Cl2(g)SO2(g) +...
asked 5 hours ago -
75 g of 2-propanol (C3H8O) and 25 g of pentane are mixed in a
200 mL...
asked 5 hours ago -
The 2800-turn coil in a dc motor has an area per turn of 1.1 ×
10-2...
asked 5 hours ago -
Draw a combinational logic circuit diagram with a symbol inside
the box for two I/P of...
asked 5 hours ago -
The cliché we use quite a lot in finance is: there is a need to
maximize...
asked 5 hours ago -
In class we discussed the addition of HCl to alpha pinene. Would
you expect one or...
asked 5 hours ago