A hot water heater 150 mm wide, 2 m long and 1 m hight is at a surface temperature of 50°C in the surroundings of 20°C. The heat transfer coefficient for convection is given by h = 1.31(AT)1/3 where h is in W/m²K and AT is in K. Take the emissivity of the heater as 0.95 and assume that it is completely surrounded by black surroundings. Takeo as 5.67 x 10-8 W/m²K+. The total rate of heat flux from the heater is W/m². [Rounded upto two decimal places]

A hot water heater 150 mm wide, 2 m long and 1 m hight is at a surface temperature of 50°C in the surroundings of 20°C. The heat transfer coefficient for convection is given by h = 1.31(AT)1/3 where h is in W/m²K and AT is in K. Take the emissivity of the heater as 0.95 and assume that it is completely surrounded by black surroundings. Takeo as 5.67 x 10-8 W/m²K+. The total rate of heat flux from the heater is W/m². [Rounded upto two decimal places]

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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.9P

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