Consider two coaxial parallel circular disks of equal diameter D that are spaced apart by a distance L. If the view factor is F12 = 0.1, without altering the diameter of the disks, determine a solution that would increase the view factor F12 by a factor of 5.

Consider two coaxial parallel circular disks of equal diameter D that are spaced apart by a distance L. If the view factor is F12 = 0.1, without altering the diameter of the disks, determine a solution that would increase the view factor F12 by a factor of 5.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.61P

See similar textbooks

Related questions

Q: Two infinitely long parallel plates of width w arelocated at a distance of w apart.Determine the…

A: This problem can be solved by applying the method of cross strings to solve the view factor. This…

Q: 2. Calculate the view factor FBA for the following shape. The radii for the hollow circle, circle A…

A: Given that, Radius of hollow circle A, rA=8 m, and RA=10 m,Radius of circle B, RB=5 m,Vertical…

Q: Consider two coaxial parallel circular disks with a 0.5 m diameter spaced 1 meter apart and two…

Q: Two infinitely long parallel cylinders of diameter D are located a distance s apart from each other.…

A: Writing the frmula for view factor of two infinmtely long surface of crossed-string method as…

Q: A circular cone of diameter D with a length L ispositioned on a common axis with a circular disk,…

A: The diagrams of the cone and cylinder are given as, For both given configurations, Now, apply the…

Q: 1. A circular furnace has 2 end black surfaces and surface 1 is kept at 500 K and surface 2 is kept…

Q: Find the view factors of the designated sides 1&3; and 1,2&3 to their surroundings in terms of a&b:…

Q: 1) Determine the view factors F13 and F23 between the rectangular surfaces shown in Figure below:…

A: Hii, thanks for the question, We are authorized to answer one question at a time, since you have not…

Q: Consider a cylindrical enclosure whose height is twice the diameter of its base. Determine the view…

A: Let us consider a cylinder whose height is twice the diameter of its base as shown below –

Q: Consider an enclosure consisting of 12 surfaces. How many view factors does this geometry involve?…

A: Given Data N-Number of surfaceN=12Ist dtermining the number of view factors by Directly Methodafter…

Q: A spherical particle of diameter Di = 10 mm is suspended by a thin wire within a cylindrical tube of…

Q: What properties are required to determine the view factors between two surfaces Emissivity of…

A: What properties are required to determine the view factors between two surfaces Emissivity of…

Q: Two plane disks each 1.25 m in diameter are parallel and directly opposed to each other. They are…

Q: Determine the view factors from the base of the pyramid shown in Figure 12-14 to each of its four…

Q: Determine the view factor between two gray surfaces A and B. Their emissivities are εA = 0.90 and εB…

A: Dear student, we are suppose to solve only 3 sub parts. Please post other parts as a separate…

Q: 13–19 Determine the view factors F13 and F3 between the rectangular surfaces shown in Fig. P13–19.

A: It is required to determine view factors F13 and F23 between the rectangular surfaces of the given…

Q: Consider two rectangular surfaces perpendicular to each other with a common edge which is 1.6 m…

Q: the outer surface temperature of the furnace should be kept below 45°C. Based on the above…

Q: determine the view factor, and the net heat transfer by radiation between two gray surfaces, A (εA=…

Q: Two plane disks each 125 cm in diameter are parallel and directly opposite each other. They are…

A: given; diameter of disc (d)=125cm=1.25mseperate distance (l)=50cm=0.5mtemperature of disc A…

Q: A spherical particle of diameter DI = 10 mm is suspended by a thin wire within a cylindrical tube of…

A: Given: Length of the tube→L=0.5 m=500 mm Inner Diameter of the tube→D2=30 mm=0.03 m Diameter of the…

Q: Two adjacent rectangles are perpendicular to each other., The first rectangle is 1.52 x 2.44 m and…

Q: Two parallel disks of diameter D=0.8 m seperated by L=0.4 m are located directly on top of each…

A: As per given question Determine the net rate of radiation heat transfer from the disks to the…

Q: Determine the overall interchange factor from surface A to B where surface A is a spherical shell…

Q: A furnace is of cylindrical shape with R = H = 2 m. The base, top, and side surfaces of the furnace…

A: Given: The height of the cylindrical shape, H = 2 m The radius of the cylindrical surface, R = 2 m…

Q: the view factor F22 is?

A: Given; Consider two infinetely long tin concentric tubes of circular coss section as given in…

Q: 3.Determine the total number of view factors that need to be evaluated directly for a 4-surface…

A: Given data: n=4 Need to determine the total number of view factors that need to evaluated directly.

Q: Determine the view factors from the very long grooves to the surroundings without using any view…

A: The schematic view of the geometry

Q: Q6) A) Determine the view factors F12 and F21 for the very long ducts shown in Figure below without…

Q: A spherical particle of diameter Dị = 10 mm is suspended by a thin wire within a cylindrical tube of…

A: given; diameter of sphere(D1)=10mm =0.01mcylinder tube (D2)=30mm…

Q: A horizontal plate is experiencing uniform irradiation on the both upper and lower surfaces. The…

A: Given data Temperature of air Ta= 290K Heat transfer coefficient h = 3030 W/m2K Radiosity of the…

Q: How can you determine the view factor F12 whenthe view factor F21 and the surface areas are…

A: Reciprocity theorem: The reciprocity theorem is used to determine the view factor F12 when areas of…

Q: Consider an enclosure consisting of five surfaces. How many view factors does this geometry involve?…

A: Understand that the geometry has five surfaces. Write the formula for number of view factors for a…

Q: A furnace that has a glass window of 50 cm X 50 cm can be considered as a blackbody at 1200 K. If…

Q: A right circular cylinder has a height of 1 m and diameter of 75 cm. Find the view factor for the…

Q: A spherical particle of diameter D = 10 mm is suspended by a thin wire within a cylindrical tube of…

Q: A gray body with a constant surface temperature of 7000C and a surface area of 500cm2 radiates in a…

Q: determine the view factor, and the net heat transfer by radiation between two gray surfaces, A (εA=…

A: Answer: (d) Qnet = 5817.6 Watt ..... (for concentric cylindrical tube). (e) Qnet = 32616 Watt…

Q: Determine the view factors from the base of a cube to each of the other five surfaces.

A: The give cube can be shown as – Let us consider the surface 1 and 3 of the cube which is shown…

Q: Consider two infinitely long thin concentric tubes of circular cross section as shown in figure. If…

Q: Consider a hemispherical furnace with a flat circular base of a diameter D. Determine the view…

Q: A 9-ft-high room with a base area of 12 ft * 12 ft is to be heated by electric resistance heaters…

A: The ceiling is treated as the black body so the emissivity of the ceiling and floor is given as,…

Q: For a surface, how is irradiation defined? For diffusely incident radiation, how is irradiation on a…

Q: Determine the view factors from the very ducts and long grooves shown in the Figure to the…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Consider two coaxial parallel circular disks of equal diameter D = 1 m spaced apart by 1 m, and two…

A: The view factor in the heat transfer theory defines the degree of radiation energy transfer between…

Concept explainers

Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.

Question

Consider two coaxial parallel circular disks of equal
diameter D that are spaced apart by a distance L. If the view
factor is F12 = 0.1, without altering the diameter of the disks,
determine a solution that would increase the view factor F12
by a factor of 5.

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 with 4 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

Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 816C and 260C, respectively. Determine the rate of heat transfer by radiation between the plates in W/m2 and the radiative heat transfer coefficient in W/m2K.
11.31 A large slab of steel 0.1 m thick contains a 0.1 -m-di- ameter circular hole whose axis is normal to the surface. Considering the sides of the hole to be black, specify the rate of radiative heat loss from the hole. The plate is at 811 K, and the surroundings are at 300 K.
Determine the total average hemispherical emissivity and the emissive power of a surface that has a spectral hemispherical emissivity of 0.8 at wavelengths less than 1.5m, 0.6 at wavelengths from 1.5to2.5m, and 0.4 at wavelengths longer than 2.5m. The surface temperature is 1111 K.
1.28 The sun has a radius of and approximates a blackbody with a surface temperature of about 5800 K. Calculate the total rate of radiation from the sun and the emitted radiation flux per square meter of surface area.
11.41 Determine the steady-state temperatures of two radiation shields placed in the evacuated space between two infinite planes at temperatures of 555 K and 278 K. The emissivity of all surfaces is 0.8.
11.68 Two infinitely large, black, plane surfaces are 0.3 m apart, and the space between them is filled by an isothermal gas mixture at 811 K and atmospheric pressure. The gas mixture consists of by volume. If one of the surfaces is maintained at 278 K and the other at 1390 K, calculate (a) the effective emissivity of the gas at its temperature, (b) the effective absorptivity of the gas to radiation from the 1390 K surface, (c) the effective absorptivity of the gas to radiation from the 278 K surface, and (d) the net rate of heat transfer to the gas per square meter of surface area.
Consider two coaxial parallel circular disks of equal diameter D = 1 m spaced apart by 1 m, and two aligned parallel square plates (1 m * 1 m) are also spaced apart by 1 m. Determine the view factors F12 between the circular disks and the square plates. Which of the two geometries has the higher view factor value?
A circular cone of diameter D with a length L ispositioned on a common axis with a circular disk, also ofdiameter D, at a distance L. A cylindrical surfaceof diameter D with a length L and a circular disk, ofthe same diameter D, are oriented coaxially at a distance L Determine the view factors F12 for the two geometries. Which of the two geometries has the higher view factor value?
Consider two coaxial parallel circular disks of equal diameter D = 1.55 m spaced apart by 1.55 m, and two aligned parallel square plates (1.55 m × 1.55 m) are also spaced apart by 1.55 m. Determine the view factor F12 between the circular disks. (For coaxial parallel disks, i = 1 and j = 2.)