7-92 FES A thermocouple with a spherical junction diameterof 1 mm is used for measuring the temperature ofa hydrogen gas stream. The properties of the thermocouplejunction are k = 35 W/m-K, p = 8500 kg/m³, andc, = 320 J/kg-K. The hydrogen gas, behaving as an ideal gasCpat 1 atm, has a free stream temperature of 200°C. If the initialtemperature of the thermocouple junction is 10°C, evaluate thetime for the thermocouple to register 99 percent of the initialtemperature difference at different free stream velocities of thehydrogen gas. Using the EES (or other) software, perform theevaluation by varying the free stream velocity from 1 to100 m/s. Then, plot the thermocouple response time and theconvection heat transfer coefficient as a function of free streamvelocity. Hint: Use the lumped system analysis to determinethe time required for the thermocouple to register 99 percent ofthe initial temperature difference (verify application of thismethod to this problem).H2 gas flow, VT, hThermocouple junctionD=1 mmFIGURE P7-921111

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EES |of 1 mm is used for measuring the temperature of a hydrogen gas stream. The properties of the thermocouple unction are k = 35 W/m·K, p = 320 J/kg-K. The hydrogen gas, behaving as an ideal gas at 1 atm, has a free stream temperature of 200°C. If the initial emperature of the thermocouple junction is 10°C, evaluate the ime for the thermocouple to register 99 percent of the initial emperature difference at different free stream velocities of the nydrogen gas. Using the EES (or other) software, perform the evaluation by varying the free stream velocity from 1 to 100 m/s. Then, plot the thermocouple response time and the 8500 kg/m?, and %3D convection heat transfer coefficient as a function of free stream velocity. Hint: Use the lumped system analysis to determine he time required for the thermocouple to register 99 percent of he initial temperature difference (verify application of this method to this problem).

EES |of 1 mm is used for measuring the temperature of a hydrogen gas stream. The properties of the thermocouple unction are k = 35 W/m·K, p = 320 J/kg-K. The hydrogen gas, behaving as an ideal gas at 1 atm, has a free stream temperature of 200°C. If the initial emperature of the thermocouple junction is 10°C, evaluate the ime for the thermocouple to register 99 percent of the initial emperature difference at different free stream velocities of the nydrogen gas. Using the EES (or other) software, perform the evaluation by varying the free stream velocity from 1 to 100 m/s. Then, plot the thermocouple response time and the 8500 kg/m?, and %3D convection heat transfer coefficient as a function of free stream velocity. Hint: Use the lumped system analysis to determine he time required for the thermocouple to register 99 percent of he initial temperature difference (verify application of this method to this problem).

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.22P

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