A cylindrical reactor built with a 10 mm thick stainless steel plate, has a conduction coefficient equal to 14.9 W/(mK), has an external diameter equal to 1.2 m and is externally coated with 50 mm of a thermal insulator, with a conduction coefficient equal to 0.05 W/(mK), whose external surface has an emissivity equal to 0.8. In the reactor, an exothermic chemical reaction occurs which, keeping the internal surface of the reactor equal to 250°C, rejects a heat rate of 940 W to the environment which is at 25°C. Assume that the height of the reactor is equal to 1.5 m. Determine: a) The external temperature of the reactor; b) The radiative heat flux; c) The heat flux by convection.
A cylindrical reactor built with a 10 mm thick stainless steel plate, has a conduction coefficient equal to 14.9 W/(mK), has an external diameter equal to 1.2 m and is externally coated with 50 mm of a thermal insulator, with a conduction coefficient equal to 0.05 W/(mK), whose external surface has an emissivity equal to 0.8. In the reactor, an exothermic chemical reaction occurs which, keeping the internal surface of the reactor equal to 250°C, rejects a heat rate of 940 W to the environment which is at 25°C. Assume that the height of the reactor is equal to 1.5 m. Determine: a) The external temperature of the reactor; b) The radiative heat flux; c) The heat flux by convection.
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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A cylindrical reactor built with a 10 mm thick stainless steel plate, has a conduction coefficient equal to 14.9 W/(mK), has an external diameter equal to 1.2 m and is externally coated with 50 mm of a thermal insulator, with a conduction coefficient equal to 0.05 W/(mK), whose external surface has an emissivity equal to 0.8. In the reactor, an exothermic chemical reaction occurs which, keeping the internal surface of the reactor equal to 250°C, rejects a heat rate of 940 W to the environment which is at 25°C. Assume that the height of the reactor is equal to 1.5 m. Determine:
a) The external temperature of the reactor;
b) The radiative heat flux;
c) The heat flux by convection.
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