Prove that the thermocouple will underestimate the temperature of airflow by more than 15% but less than 30% in a large air duct if the temperature of the hot air is 1367 K, duct-wall temperature is 533 K, emissivity of the thermocouple is 0.5, and the convection heat-transfer coefficient is 114 W/m2 -K.

Prove that the thermocouple will underestimate the temperature of airflow by more than 15% but less than 30% in a large air duct if the temperature of the hot air is 1367 K, duct-wall temperature is 533 K, emissivity of the thermocouple is 0.5, and the convection heat-transfer coefficient is 114 W/m2 -K.

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.4P

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