A smooth, flat, thin fin of copper extending out from a tube is 51 mm by 51 mm square. Its temperature is approximately uniform at 82.2 °C. Cooling air at 15.6 °C and 1atm abs flows parallel to the fin at a certain velocity. Assume the flow is laminar flow with Reynolds number of 33,411. Take average temperature (82.2+15.6)/23D48.9 °C for the analysis, at 48.9 °C, Np,=0.704, thermal conductivity K=0.028 W/m K.

A smooth, flat, thin fin of copper extending out from a tube is 51 mm by 51 mm square. Its temperature is approximately uniform at 82.2 °C. Cooling air at 15.6 °C and 1atm abs flows parallel to the fin at a certain velocity. Assume the flow is laminar flow with Reynolds number of 33,411. Take average temperature (82.2+15.6)/23D48.9 °C for the analysis, at 48.9 °C, Np,=0.704, thermal conductivity K=0.028 W/m K.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Fully developed region Q Film fl P 12 a- b- 22₂ Pa Ha=0

Q: The critical Reynolds number for external flow (which started as a laminar flow) over thin flat…

A: For cross flow over a long cylinder, diameter is the appropriate length parameter to be used in…

Q: a 5-mm-diamter capillary tube is used as a viscometer for oils. When the flow rate is 0.071 m3/h,…

A: As per guidelines we can answer only first question. Kindly post the remaining questions in another…

Q: Engine oil at 40°C with a critical Reynolds number of 5 x 10^5, and kinematic viscosity 2.485 x…

A: Given Data- In the first question, we have to find Mach no. V=320 m/s , k=1.4 , R=287 KJ/Kg , T=200k…

Q: What is the value of the heat transfer coefficient for air at 37 ° C flowing at 5 m / s…

Q: Forced air at Too = 25°C and V = 17 m/s is used to cool electronic elements on a circuit board. One…

Q: Air at standard pressure flows across a flat plate at 3m/s. The temperature surface is 50oC and the…

A: V= 3m/sTs = 500 CTo = 200 Cx=1 m

Q: It is known that the velocity distribution for steady, laminar flow in circular tubes (either…

Q: A fluid flows at 15 m/s over a wide flat plate 30.5 cm long. For each from the following list,…

Q: 2. SAE 50 oil of specific gravity 0.862 flows at 0.2 kg/s through a 1.2 cm I.D. horizontal tube. At…

A: Step 1: (a) The pressure drop in a tube can be related to the dynamic viscosity using the…

Q: Helium at 20° C and low pressure flows around a thin plate 1 m long and 2 m wide. You want the…

A: Given, Length = L = 1 m Width = B = 2 m Temperature = T = 20 oC = 293 K Frictional resistance = F =…

Q: A fluid flows at 15 m/s over a wide flat plate 30.5 cm long. For each from the following list,…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A long fi xed tube with a rounded nose, aligned with anoncoming fl ow, can be used to measure…

A: Unit conversions: (a) Consider the diagram shown below for the device.

Q: State if the following statements are TRUE or FALSE. No explanation is required. Write "True or…

A: giventrue- false question

Q: Water at 30 °C enters a pipe of 25 mm in diameter and 1 m in length with a mean velocity of 0.06…

A: The outlet temperature of the water.Given:The inlet temperature of the water is .The diameter of the…

Q: Suppose a reactor producing exhaust gas that is being transferred to the next building by a 6 mm…

A: Given D=6mm =0.006m L=20m For exhaust gases T1=200°Cflow ratw m˙ =0.003kg/sVer= velocity of…

Q: Air with a 1.7 atm gauge and a temperature of 15°C enters a horizontal 0.075m steel pipe 70 m long.…

A: Given DataLength of Pipe L=70mTemerature T=15°CDiameter of Pipe D=0.075mVelocity of Flow…

Q: Air at 20 °C flows over a flat aluminum plate at 30 m/s to cool electrical components on the other…

A: Solution :- Given data :-air at 20 °C flat aluminum plate =30 m/s…

Q: Steel (AISI 1010) plates of thickness 8 = 6 mm and d length L = 1 m on a side are conveyed from a…

Q: Air (can be assumed as an ideal gas) at an ambient temperature of 30°C flows across (perpendicular…

Question

A smooth, flat, thin fin of copper extending out from a tube
is 51 mm by 51 mm square. Its temperature is
approximately uniform at 82.2 °C. Cooling air at 15.6 °C
and 1atm abs flows parallel to the fin at a certain velocity.
Assume the flow is laminar flow with Reynolds number of
33,411. Take average temperature (82.2+15.6)/2%3D48.9 °C
for the analysis, at 48.9 °C, Npr=0.704, thermal
conductivity K=D0.028 W/m K.
Calculate the heat transfer coefficient, h.
Please keep one decimal and take positive value for the
final answer.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A tube bank uses an aligned arrangement of 12-mm diameter tubes with ST = SL = 20 mm. There are 8 rows of tubes with 20 tubes in each row. The tubes are maintained at a surface temperature of 400K, while the flue gas at 300OK and a velocity of 5 m/s are in cross flow over the tubes. The properties of the flue gas approximated as those of air at 300K are kinematic viscosity v=15.89x10-6 m2/s, k=26.3x10³ W/m-K, Pr=0.707, p=1.1614 kg/m³, Cp=1007 J/kg-K. At 400K, Pr;=0.690. Determine 1) Average convention heat transfer coefficient; 2) Rate of heat transfer per unit length of the tubes in the bank.
Air at a pressure of 1 atm and a temperature of 250 °C is in parallel flow over a top surface of a flat plate that is maintained at a uniform temperature of 20 °C. The plate has a length of 0.35 m (in the flow direction) and a width of 0.2 m. The Reynolds number based on the plate length, ReL is 9x10“. (a) Find the rate of heat transfer to the plate. (b) If the free stream velocity of air is increased 5 times and pressure increased 4 times, what will be the rate of heat transfer? For air at 1 atm: assume k=0.0299 W/m.k, Pr =0.70. Draw sketch and show all calculations.
Please write down a related Average Nusselt number equation for each case. (Do not calculate) Laminar flow SCHEMATIC: Air 4∞ = 2 m/s Top = 25°C p = 1 atm w= 0.2 m L=25 AL 0.25 m T = 500 °C ASSUMPTIONS: (1) Top surface is smooth, (2) Bottom surface is adiabatic, (3) Critical Reynolds number is 5 × 105, (4) Negligible radiation.
Looking for correct solution.
Air at 15°C flows at 10 m/s over a flat plate of length 3 m. Using one-seventh power law of the turbulent flow, what is the ratio of local skin friction coefficient for the turbulent and laminar flow cases? (The kinematic viscosity of air is 1.470 × 10−5 m2/s.) (a) 4.25 (b) 5.72 (c) 6.31 (d ) 7.29 (e) 8.54