A mercury-in-glass thermometer at 100?F (OD = 0.35 in.) is inserted through duct wall into a 10
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A mercury-in-glass thermometer at 100?F (OD = 0.35 in.) is inserted through duct wall into a 10 ft/s air stream at 150?F. Estimate the heat transfer coefficient between the air and the thermometer.GIVENThermometer in an air streamThermometer temperature (Ts) = 100?FThermometer outside diameter (D) = 0.35 in = 0.0292 ftAir velocity (V) = 10 ft/sAir temperature (Tb) = 150?FASSUMPTIONSSteady stateTurbulence in the free stream approaching the thermometer is lowEffect of the duct walls innegligible
Transcribed Image Text:
Duct Wall T,= 100°F D=0.35 h Alr V- 10 ft/s T= 150°F
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Related Book For
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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