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The response of a thermocouple can be modelled as a first order process to changes in the temperature of the environment. If such a thermocouple at 25°C is immersed suddenly in a fluid at 80°C and held there, it is found that the thermocouple reading (in °C) reaches 3.2% of the final steady value in 40 seconds. Find the time constant of the thermocouple.

The response of a thermocouple can be modelled as a first order process to changes in the temperature of the environment. If such a thermocouple at 25°C is immersed suddenly in a fluid at 80°C and held there, it is found that the thermocouple reading (in °C) reaches 3.2% of the final steady value in 40 seconds. Find the time constant of the thermocouple.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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The response of a thermocouple can be modelled as a first order process to changes in the temperature of the environment. If such a thermocouple at 25°C is immersed suddenly in a fluid at 80°C and held there, it 63.2% of the final steady value in 40 seconds. Find the time constant of the thermocouple found that the thermocouple reading (in °C) reaches
Transcribed Image Text:The response of a thermocouple can be modelled as a first order process to changes in the temperature of the environment. If such a thermocouple at 25°C is immersed suddenly in a fluid at 80°C and held there, it 63.2% of the final steady value in 40 seconds. Find the time constant of the thermocouple found that the thermocouple reading (in °C) reaches
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