The temperature of a gas stream is to be measured by a thermocouple whose junction can be approximated as a 1.2-mm-diameter sphere. The properties of the junction are k = 35 W/m-K, r = 8500 kg/m3 and cp = 320 J/kg-K and the heat transfer coefficient between the junction and the gas is h = 110 W/m2 -K. Determine how long it will take for the thermocouple to read 99 percent of the initial temperature difference

The temperature of a gas stream is to be measured by a thermocouple whose junction can be approximated as a 1.2-mm-diameter sphere. The properties of the junction are k = 35 W/m-K, r = 8500 kg/m3 and cp = 320 J/kg-K and the heat transfer coefficient between the junction and the gas is h = 110 W/m2 -K. Determine how long it will take for the thermocouple to read 99 percent of the initial temperature difference

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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