You can neglect radiation at the bottom of the plate; the bottom side of the plate has water flowing underneath it. Often, when dealing with liquids (rather than gases), one can neglect radiation because heat transfer due to convection is so much larger (liquids tend to have higher convection coefficient values than gases). An opaque, horizontal plate has a thickness of L = 21 mm and thermal conductivity k = 25 W/m.K. Water flows adjacent to the260°C with ha = 40 W/m².K. Thebottom of the plate and is at a temperature of Tw= 25°C. Air flows above the plate at Tatop of the plate is diffuse and is irradiated with G= 1450 W/m², of which 535 W/m² is reflected. The steady-state top and bottomplate temperatures are T, = 43°C and T₂ = 35.1°C, respectively.= Determine the transmissivity of the plate.T = iDetermine the reflectivity of the plate.p = iDetermine the absorptivity of the plate.α = i

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An opaque, horizontal plate has a thickness of L = 21 mm and thermal conductivity k = 25 W/m.K. Water flows adjacent to the 40 W/m².K. The bottom of the plate and is at a temperature of Tw= 25°C. Air flows above the plate at T = 260°C with ha = top of the plate is diffuse and is irradiated with G = 1450 W/m², of which 535 W/m² is reflected. The steady-state top and bottom plate temperatures are T, = 43°C and T₁ = 35.1°C, respectively.

An opaque, horizontal plate has a thickness of L = 21 mm and thermal conductivity k = 25 W/m.K. Water flows adjacent to the 40 W/m².K. The bottom of the plate and is at a temperature of Tw= 25°C. Air flows above the plate at T = 260°C with ha = top of the plate is diffuse and is irradiated with G = 1450 W/m², of which 535 W/m² is reflected. The steady-state top and bottom plate temperatures are T, = 43°C and T₁ = 35.1°C, respectively.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.8P

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