cylindrical electrical heating element (dissipated 1000 W/m) of diameter D=10 mm, thermal conductivity k=240 W/m K, density 2700 kg/m3, and specific heat cp = 900 J/kg K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 10 m/s, respectively. calculate the surface temperature per unit length of the heater.
cylindrical electrical heating element (dissipated 1000 W/m) of diameter D=10 mm, thermal conductivity k=240 W/m K, density 2700 kg/m3, and specific heat cp = 900 J/kg K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 10 m/s, respectively. calculate the surface temperature per unit length of the heater.
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 6.2P: A mercury-in-glass thermometer at 40C(OD=1cm) is inserted through a duct wall into a 3 m/s airstream...
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Q2/ cylindrical electrical heating element (dissipated 1000 W/m) of diameter D=10 mm, thermal conductivity k=240 W/m K, density 2700 kg/m3, and specific heat cp = 900 J/kg K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 10 m/s, respectively. calculate the surface temperature per unit length of the heater.
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