I need the answer as soon as possible Q5 A. Consider a cylindrical furnace with ro =H=1 m, as shown in the7,- 700 K0.8figure. The top (surface 1) and the base (surface 2) of the furnacehas emissivities el= 0.8 and e2 =0.4, respectively, and aremaintained at uniform temperatures T1 700 K and T2 500 K. Theside surface closely approximates a blackbody and is maintained ata temperature of T3 400 K. Determine the net rate of radiation heattransfer at each surface during steady operation andexplain how these surfaces can be maintained at specifiedtemperatures. (F12=0.38)Black7,-400 KT 500 K04

Answered: Image /qna-images/answer/9bb50f2c-7e6d-4609-b3fa-10f05d0f05ab.jpg

Consider a cylindrical furnace with ro = H = 1 m, as shown in the figure. The top (surface 1) and the base (surface 2) of the furnace has emissivities el= maintained at uniform temperatures T1 700 K and T2 500 K. The side surface closcly approximates a blackbody and is maintained at a temperature of T3 400 K. Determine the net rate of radiation heat transfer at each surface during steady operation and explain how these surfaces can be maintained at specified temperatures. (F12-0.38) 7,-700 K 0.8 and e2 =0.4, respectively, and are Black T,400 K T- S00 K

Consider a cylindrical furnace with ro = H = 1 m, as shown in the figure. The top (surface 1) and the base (surface 2) of the furnace has emissivities el= maintained at uniform temperatures T1 700 K and T2 500 K. The side surface closcly approximates a blackbody and is maintained at a temperature of T3 400 K. Determine the net rate of radiation heat transfer at each surface during steady operation and explain how these surfaces can be maintained at specified temperatures. (F12-0.38) 7,-700 K 0.8 and e2 =0.4, respectively, and are Black T,400 K T- S00 K

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 11.65P

See similar textbooks

Similar questions

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.
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.
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 rate of radiant heat emission in watts per square meter from a blackbody at (a) 15C, (b) 600C, and (c) 5700C.
A radiator in a domestic heating system operates at a surface temperature of 55°C. Assuming the radiator behaves as a black body, the rate at which it emits the radiant heat per unit area is (assume o = 5.67 x 10-8 W/m²K4)
Daylight may be approximated as a blackbody at the effective surface temperature of 5800 K. Determinethe fraction of radiation emitted that falls in the UV (0.1 – 0.4 μm) and visible (0.4 – 0.76 μm) region.(Ans: 0.1245, 0.4243)