The temperature of a flowing gas stream is measured using a thermocouple, which is a spherical metal bead 1.5 mm in diameter. The properties of the metal are p=9000 kg/m³ , C₂ = 550 J/kg-K and k=30 W/m K. The film coefficient between the gas and the metal is 410 W/m².K. If the gas temperature is suddenly increased from 300 C to 310 °C, how long will it take for the thermocouple to reach 308 C?
a) 5 s
b) 2.56 s
c) 3.55 s
d) 4.95 s
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The temperature of a flowing gas stream is measured using a thermocouple, which is a spherical metal bead 1.5 mm in diameter. The properties of the metal are p =9000 kg/m.
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the correct answer to this question is option a
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