A 1 m x 1.25 m hot surface at 300 C is to be cooled by attaching a rectangular fins (k = 200 W/m K) with 30 mm length, 75 mm width and 5 mm base thickness. Fins are exposed to an ambient air condition of 25'C and heat transfer coefficient is 30 W/m K. If there are 2250 fins, calculate; a. The heat transfer rate from a single fin. b. The increase in the rate of heat transfer. Determine the overall effectiveness of the fins. c.

A 1 m x 1.25 m hot surface at 300 C is to be cooled by attaching a rectangular fins (k = 200 W/m K) with 30 mm length, 75 mm width and 5 mm base thickness. Fins are exposed to an ambient air condition of 25'C and heat transfer coefficient is 30 W/m K. If there are 2250 fins, calculate; a. The heat transfer rate from a single fin. b. The increase in the rate of heat transfer. Determine the overall effectiveness of the fins. c.

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: Question #3: A storage tank consists of a cylindrical section that has a length and inner diameter…

Q: An aluminium tube carrying a hot liquid at 118°C has 12 integrally machined longitudinal fins on its…

A: To Find : The draw the sketch and explain the assumption. Given : The total lenght is l=281 mm. The…

Q: 3.26 A composite wall separates combustion gases at 2600°C from a liquid coolant at 100°C, with gas-…

Q: A house has a composite wall of wood, fiberglass insulation and plaster board. On a cold winter day,…

Q: A pipeline is buried horizontally at a distance of 10 cm below the earth's surface. Where the soil…

Q: An aluminium tube carrying a hot liquid at 118°C has 12 integrally machined longitudinal fins on its…

Q: A hot surface at 350°C is to be cooled by attaching straight aluminum rectangular fins (k-250 W/m K)…

A: Thermal conductivity, K=250 W/mKLength of the fin, L=35mmwidth of the fin, w=70mmthe thickness of…

Q: 4. A certain building wall consists of 6-in of concrete ( k = 1.2 W/m- o C), 2 in of fiberglass…

Q: A wall made of concrete 0.305 m thick is insulated on the sides. Uniform wall temperature 10°C (283…

A: Given: The thickness of concrete wall, L = 0.305 m The temperature of wall, Ti = 283.2 K The…

Q: A house has a composite wall of wood, fiberglass insulation and plaster board. On a cold winter day,…

A: GIVEN thermal conductivity fiber glass kb=0.038 W/m/K Wood ks=0.12 W/m/K Plaster board kp=0.17 W/m/K…

Q: Consider a fin having 10-3 m perimeter and 10-6 m cross-sectional area is exposed to h = 30 W/m2K…

A: Given data Perimeter of fin is 0.001m Area of fin is 0.000001m2 Thermal conductivity is 300 W/mk…

Q: A stainless steel tube (k = 14,2 W / m.K) used to transport a chilled pharmaceutical has an inner…

A: The heat exchanger is a device used to transfer heat from one fluid to another fluid. For heat…

Q: Consider a 0.6 m X 0.6 m epoxy laminate (k = 0.2 W/m-k) whose thickness is 5 mm. In order to reduce…

A: Solution: Given Data: ke=0.2 W/m-Kt=5 mmkc=380 W/m-K∆T=20oCs=6 mmd=2 mm To Find: (a) Thermal…

Q: A 1 m long, 5 cm diameter, cylinder placed in an atmosphere of 40°C is provided with 12 longitudinal…

A: Given data as per question length of fin =2.5 cm Diameter of cylinder=5 cm The heat transfer…

Q: Help your customer to calculate the heat losses through a composite wall that includes an 8-mm-thick…

A: As per the guidance, i am answering first question only. For rest of the part please re-post…

Q: Problem 17.127: Circular fins of uniform cross section, with diameter of 10 mm and length of 50 mm,…

Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A 1 m x 1.25 m hot surface at 300 C is to be cooled by
attaching a rectangular fins (k = 200 W/m K) with 30 mm
length, 75 mm width and 5 mm base thickness. Fins are
exposed to an ambient air condition of 25°C and heat transfer
coefficient is 30 W/m K. If there are 2250 fins, calculate;
The heat transfer rate from a single fin.
%3D
b. The increase in the rate of heat transfer.
c. Determine the overall effectiveness of the fins.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

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

An electronic component, 65 mmx65 mm, in steady state operation reaches the base temperature of 100°C. To help dissipate heat 10 rectangular fins (2mm-thick, 10- mm long, k=70 W/mK) are to be soldered to the chip as shown in the figure below. The ambient temperature and convection heat transfer coefficients are given as 20°C and 50 W/m2K, respectively. Assuming radiation losses and the heat transfer from the back side of the circuit board are negligible, and the temperature of the surrounding surfaces to be the same as the air temperature of the room. (a) Calculate the heat transfer from the electronic component without the fins, (b) Calculate the heat transfer with the fins, (c) Do you recommend the use of this fin configuration? 2mm T,h 10mm 65mm 65mm T
Problem 3 An annular aluminum (k = 240 W/m.K) fin of rectangular profile is attached to a circular tube that has an outside diameter of 30 mm and a surface temperature of 250°C. The fin is 2 mm thick and has an outside diameter of 88 mm. The temperature and the convection coefficient associated with the adjoining outside fluid are 25°C and 35 W/m?.K, respectively. (a) What is the heat loss per fin? (b) If 200 such fins are spaced uniformly per meter along the tube length, determine the heat loss per meter of tube length.
W mk Two-dimensional transient- Consider a 60-mm long aluminum fin (k = 186 ) with thickness of 1 mm (into the paper). The width is 45 mm. The aluminum is exposed to air with an ambient temperature of T = 15°C and convective heat transfer coefficient of h = 50 The fin is utilized to remove heat from a surface whose temperature is T₂ = 80° C (left side). We will here assume that the convection perpendicular to the paper is not included. W m²K T= 80 CO 16 T = 80 C C 11 T= 80 C6 T = 80 C kgk C from t = 0 sec. 1 a. b. 17 C. d. e. 12 convection 18 13 60 mm convection 19 14 20 15 10 Consider the problem above for transient analysis. Using either implicit or explicit method, obtain solution of temperatures until it reaches steady state. If you are using the explicit method, please select appropriate time step that ensures stability. If you are using implicit method, then any time step should be good. For this problem, consider p = 2500 and C₂ = 900 Assume that initially, the fin is at 25°C,…
What is true option
I need help on 2b
Can someone please help me to solve all of the following question showing all work and explanation as well as graphs needed in excel with formulas. Thank you!