A large diffuse surface has spectral absorptivity of a=0.9 for 2 <1 jam and a=0.2 for 221 m. The surface is insulated in the bottom, and exposed to two different conditions on thetop:sunInsulatedInsulatedCase (2)Case (1)6-1) Case 1): What is the value of the total hemispherical absorptivity of the large diffusesurface? Note that the sun emits approximately as a blackbody at 5800 K.Blackbody Radiation FunctionATAT306.48067763000430005160146000.00001640000.379210AND6407554000213466337471405300endy70LND0019715400.0093415.4000.301046200053006.7201782300.066728JOH0.140256ARD6.7376186.7541408.1801304227697AND67631999250103.000EXXION33003183026.8192173,4007400.40360776008.6391027N06-2) Case 1): The surface is exposed to the sun and G. 1200 W/m². Flowing air temperatureTe is 300 K. Assuming the surface temperature of 7,- 320 K, what is the convective heattransfer coefficient ? The answer should be given in the unit of W/(m²K).9

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A large diffuse surface has spectral absorptivity of a = 0.9 for λ < 1 jam and a = 0.2 for à 2 1 m. The surface is insulated in the bottom, and exposed to two different conditions on the top: sun T₂ Insulated Insulated Case (2) Case (1) 6-1) Case 1): What is the value of the total hemispherical absorptivity of the large diffuse surface? Note that the sun emits approximately as a blackbody at 5800 K. Blacklody Radiation Function AT AT 4000 6480677 BOROD 6300014 0000000 LAB 0.000016 6.37920 GOMIZE AND 130 0.002134 BA33747 140 5300 BA70 LND 0019 5,400 BANO 1300 0.009341 2000 0672 5.300 6.720178 JOH AIRD 0.140256 6.754140 8.180130 6.40 6.769234 0227697 6783199 2899 02501 AND 6.796129 3.000 EXXION 8.273232 130 0318302 6X19217 3,400 7.40 6424527 0.403607 7400 8639102 AND #443382 THO BAAMOS 6-2) Case 1): The surface is exposed to the sun and G. 1200 W/m². Flowing air temperature Te is 300 K. Assuming the surface temperature of 7.- 320 K, what is the convective heat transfer coefficient ? The answer should be given in the unit of W/(m²K). NO

A large diffuse surface has spectral absorptivity of a = 0.9 for λ < 1 jam and a = 0.2 for à 2 1 m. The surface is insulated in the bottom, and exposed to two different conditions on the top: sun T₂ Insulated Insulated Case (2) Case (1) 6-1) Case 1): What is the value of the total hemispherical absorptivity of the large diffuse surface? Note that the sun emits approximately as a blackbody at 5800 K. Blacklody Radiation Function AT AT 4000 6480677 BOROD 6300014 0000000 LAB 0.000016 6.37920 GOMIZE AND 130 0.002134 BA33747 140 5300 BA70 LND 0019 5,400 BANO 1300 0.009341 2000 0672 5.300 6.720178 JOH AIRD 0.140256 6.754140 8.180130 6.40 6.769234 0227697 6783199 2899 02501 AND 6.796129 3.000 EXXION 8.273232 130 0318302 6X19217 3,400 7.40 6424527 0.403607 7400 8639102 AND #443382 THO BAAMOS 6-2) Case 1): The surface is exposed to the sun and G. 1200 W/m². Flowing air temperature Te is 300 K. Assuming the surface temperature of 7.- 320 K, what is the convective heat transfer coefficient ? The answer should be given in the unit of W/(m²K). NO

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 11.22P

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