Answered: 2. Calculate the view factor FBA for…

2. Calculate the view factor FBA for the following shape. The radii for the hollow circle, circle A and circle B are 8m, 10m, and 5m, respectively. Vertical distance is 15m.

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.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.34P

See similar textbooks

Related questions

Q: Calculate the (τα) product for a two-glass-cover collector (KL = 0.0370 per plate) with a flat black…

Q: What is the average or total emissivity of the given radiation shields? Note: the radiation shield…

A: GIVEN THAT : E1 = 0.02 E2 = 0.03 According to the details provided in the question, we need to…

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

Q: A horizontal opaque flat plate is well insulated on the edges and the lower surface. The top surface…

Q: Two large parallel surfaces (surface 1 and surface 2) kept at constant surface temperature of T= 300…

Q: Determine the view factors F32 and F23 between the rectangular surfaces shown in the figure.

A: X=1 mZ1=0.2 mZ2=0.2 mY=0.4 m

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

Q: Imagine you have two concentric, coaxial cylindrical tubes with an evacuated annular space, with…

Q: Consider two coaxial parallel circular disks of equal diameter D that are spaced apart by a distance…

A: Considering the diameter of the two discs are equal. Thus, the radii of the two-discs are equal.…

Q: For the long (into the screen) triangular enclosure shown below, find the view factor from surface 1…

A: From summation rule of shape factors: F33+F32+F31=1 .....(1) Since no energy radiated by surface…

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: Consider a 20-cm-diameter spherical ball at 800 K suspended in air. Assuming the ball closely…

A: Given data as per question Diameter of sphere = 20 cm Sphere temperature = 800 k wavelength = 3um

Q: A spherical particle of diameter D1 = 10 mm is suspended by a thin wire within a cylindrical tube of…

Q: whose walls are maintained at 300 K. One of the plates (node 1) is maintaine ature of 900 K , while…

A: using by summation rule F11+F12+F13=1F21+F22+F23=1F31+F32+F33=1 where , F11=0, F22=0…

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

Q: A small disc-shaped earth satellite, 1m in diameter, circles the earth (radius 6250 km) at a…

A: Given details: d=1 mε1=ε2=0.3Tsatellite=-18°CT2=27 °Cσ=5.67×10-8 w/m2k4 here σ=stefan boltzman…

Q: A furnace wall emits radiation at 2000K. Treating it as black body radiation, calculate the…

A: Given data: T=2000 K Need to determine the monochromatic radiant flux density, wavelength at which…

Q: A directionally emitting surface has an emissivity of 0.7 for angles up to 45° from vertical and 0.2…

A: Solution: Emissivity = 0.7 for angles upto 45 degrees Emissivity =0.2 for rest of the angles

Q: (b) A black body in vacuum emits maximum radiation at wavelength 0.6x10° m. Estimate the : (1)…

A: Ans.4(b) Given Data Wavelength of the black body, 0.6×10-6m

Q: Consider a cylindrical enclosure with A1, A2, and A3 representing the internal base, top, and side…

A: Given: The diagram of the cylindrical enclosure with having area of surfaces 1, 2, and 3 is given…

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: Consider a conical enclosure of height h and base diameter D. Determine the view factor from the…

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

Q: Consider a room with dimensions as in the sketch. Assuming all emissivities of surfaces are equal to…

A: Please refer next page for the answer.

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: urfaces A and B are concentric cylindrical tubes with diameters of 275 and 300 mm, respectively.…

Q: 3 5

A: Given: Let us consider the given image, To find: The view factor for F34.

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: Calculate the net heat flux per unit area and by radiation between two infinitely large parallel…

A: Introduction: Radiation heat transmission occurs in the form of electromagnetic waves, primarily in…

Q: (a) Two surfaces, A and B has a temperature of 4500 K and different spectral emissivity as shown in…

A: Given: The temperature, T = 4500 K The Stefan Stefan Boltzmann’s constant, σ = 5.67x10^-8 W/m^2.K

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: 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: An opaque surface at 1000 K if its spectral emissivity is = 0.4, 0.7, and 0.3 for 0 < < 2 μm, 2μm =…

Q: Consider a 20-cm-diameter spherical ball at 800 K suspended in air as shown in Fig. 12-12. Assuming…

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 the right-circular cylinder of diameter D, length L, and the areas A1, A2, and A3…

A: Right circular cylinder: Diameter D Length L Areas A1, A2, and A3 representing the base, inner, and…

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

2. Calculate the view factor FBA for the following shape.
The radii for the hollow circle, circle A and circle B are 8m, 10m, and
5m, respectively. Vertical distance is 15m.
B

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

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.
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.
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.
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.
A tungsten filament is heated to 2700 K. At what wavelength is the maximum amount of radiation emitted? What fraction of the total energy is in the visible range (0.4to0.75m)? Assume that the filament radiates as a graybody.
1.26 Repeat Problem 1.25 but assume that the surface of the storage vessel has an absorbance (equal to the emittance) of 0.1. Then determine the rate of evaporation of the liquid oxygen in kilograms per second and pounds per hour, assuming that convection can be neglected. The heat of vaporization of oxygen at –183°C is .
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.