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9. What is the equation for efficiency of a single fin? What is the equation for...
For an array of rectangular straight fins. For the first answer, find the efficiency of a...
For an array of rectangular straight fins. For the first answer, find the efficiency of a single fin. For the second answer, find the efficiency of the array of fins, with the given parameters: L = 10 mm t = 2 mm, w = 5 mm qt = 100 watts k = 200 w/mk Tinf = 20C Tbase = 100C Prime area: Ab = 25 mm2 h = 500 w/m2k Number of fins in array: N = 50 ** if...
PROBLEM 2 (30pt): Toe 20°C he20wnik Ke loous mk A cylindrical shaped fin, 10cm long with...
PROBLEM 2 (30pt): Toe 20°C he20wnik Ke loous mk A cylindrical shaped fin, 10cm long with a diameter of 0.004m is attached to a base at 200C. (a) Would it be appropriate to model this fin as an (b) What is the rate of heat transfer from the base through a single fin? You are finished when you have provided enough infinitely long fin? Justify your answer. information so that an 8 year old could plug things into a calculator...
please show work use chart to get correct length and fin efficiency 4. Straight metal fins...
please show work
use chart to get correct length and fin efficiency
4. Straight metal fins (k = 45 W/m °C) of triangular profile installed on a l m 1 m wall. The wall is maintained at 200 °C and are exposed to a convection environment at 25 °C with h = 204 W/m² °C. The fins have a length of 8 mm and a thickness of 2 mm. The space between two adjacent fins is 3 mm. Calculate (a)...
blem 4 (20 pts) A square chip that is 12.7mm on a side has a maximum allowable chip operating temperature -75°C. To dissipate heat produced in the chip, a 4 x 4 array of copper (k-400 W/m.K) pin fins...
blem 4 (20 pts) A square chip that is 12.7mm on a side has a maximum allowable chip operating temperature -75°C. To dissipate heat produced in the chip, a 4 x 4 array of copper (k-400 W/m.K) pin fins is proposed to be etallurgically joined to the outer surface of the chip. The convection coefficient is h-250 W/m'K and ambient air mperature isTo-20°C. The pin fin dimeter is D,-1.5mm and length is L,-16mm. Assuming steady-state uniform chip temperature Te-75°C and...
Part 2 - Problems (75 marks) I. Copper fins (k 401 W/mK) of uniform square cross-section...
Part 2 - Problems (75 marks) I. Copper fins (k 401 W/mK) of uniform square cross-section (2mm x 2mm) and length L 30mm are used in a fin array to enhance heat transfer from a 40mm x 40mm surface that is maintained at Tb 170°C. There are a total of 100 fins, and the tip of the fins is maintained at 35°C. Air circulates over the fin array with a temperature of To = 15°C and a convection coefficient of...
hw FinFan fin efficiency Score: 0/5 0/1 answered Work saved Submit and End VO Question 1...
hw FinFan fin efficiency Score: 0/5 0/1 answered Work saved Submit and End VO Question 1 < > 0/5 pts 3 Details <p A horizontal tube-bundle air-cooled exchanger is used to condense steam at 255 F and has the following specifications: Tube Bundle: Steam is flowing inside the tubes tube od 1 in ; tube id 0.834 in ; tube pitch = 2 in (square pitch); k = 26 btu/ft-hr-F There are 18 tube rows with each row containing 72...
A fin array has 128 rectangular pin fins (0.0625 in x 0.125 in x 0.25 in)...
A fin array has 128 rectangular pin fins (0.0625 in x 0.125 in x 0.25 in) evenly spaced on a base 2 in x 2 in. The fins have conductivity k = 100 Btu/hr-ft-F , and are in an environment with h = 20 Btu/hr-ft2-F. What is the equivalent resistance of this fin array, in F-hr/Btu? Give your answer to three significant figures.
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...
3.25 For the heat sink shown in the accomping figure, find (a) the fin efficiency, (b)...
3.25 For the heat sink shown in the accomping figure, find (a)
the fin efficiency, (b) the surface efficiency, and (c) the heat
transfer from the heat sink.
Heat Sinks 3.25 ure, find (a) the fin efficiency, (b) the surface efficiency, For the heat sink shown in the accompanying fig- and (c) the heat transfer from the heat sink. T,, = 40°C 5 mm h = 16 W/m·K 4 cm 6061 aluminum 12 cm L= 25 cm To 90°C
PROBLEM 2 (30pt): Toe 20°C he20wnik Ke loous mk A cylindrical shaped fin, 10cm long with a diameter of 0.004m is attached to a base at 200C. (a) Would it be appropriate to model this fin as an (b) What is the rate of heat transfer from the base through a single fin? You are finished when you have provided enough infinitely long fin? Justify your answer. information so that an 8 year old could plug things into a calculator...
please show work
use chart to get correct length and fin efficiency
4. Straight metal fins (k = 45 W/m °C) of triangular profile installed on a l m 1 m wall. The wall is maintained at 200 °C and are exposed to a convection environment at 25 °C with h = 204 W/m² °C. The fins have a length of 8 mm and a thickness of 2 mm. The space between two adjacent fins is 3 mm. Calculate (a)...
blem 4 (20 pts) A square chip that is 12.7mm on a side has a maximum allowable chip operating temperature -75°C. To dissipate heat produced in the chip, a 4 x 4 array of copper (k-400 W/m.K) pin fins is proposed to be etallurgically joined to the outer surface of the chip. The convection coefficient is h-250 W/m'K and ambient air mperature isTo-20°C. The pin fin dimeter is D,-1.5mm and length is L,-16mm. Assuming steady-state uniform chip temperature Te-75°C and...
Part 2 - Problems (75 marks) I. Copper fins (k 401 W/mK) of uniform square cross-section (2mm x 2mm) and length L 30mm are used in a fin array to enhance heat transfer from a 40mm x 40mm surface that is maintained at Tb 170°C. There are a total of 100 fins, and the tip of the fins is maintained at 35°C. Air circulates over the fin array with a temperature of To = 15°C and a convection coefficient of...
hw FinFan fin efficiency Score: 0/5 0/1 answered Work saved Submit and End VO Question 1 < > 0/5 pts 3 Details <p A horizontal tube-bundle air-cooled exchanger is used to condense steam at 255 F and has the following specifications: Tube Bundle: Steam is flowing inside the tubes tube od 1 in ; tube id 0.834 in ; tube pitch = 2 in (square pitch); k = 26 btu/ft-hr-F There are 18 tube rows with each row containing 72...
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...
3.25 For the heat sink shown in the accomping figure, find (a)
the fin efficiency, (b) the surface efficiency, and (c) the heat
transfer from the heat sink.
Heat Sinks 3.25 ure, find (a) the fin efficiency, (b) the surface efficiency, For the heat sink shown in the accompanying fig- and (c) the heat transfer from the heat sink. T,, = 40°C 5 mm h = 16 W/m·K 4 cm 6061 aluminum 12 cm L= 25 cm To 90°C
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