A 304 stainless steel cryogenic valve body having a mass of 12 kg (26.5 lb) is to be cooled from 300 K (80°F) to 80 K (-315.7°F). Determine the energy that must be removed from the valve body, using the Debye model. The Debye temperature for 304 stainless steel is 0,= 320 K (576°R), and the gas constant is 150.28 J/kg-K (0.0359 Btu/lb-R). If the valve body is cooled using liquid nitrogen at the NBP, determine the volume of liquid nitrogen that will be evaporated during the process. The density for saturated liquid nitrogen at the NBP is 807.3 kg/m³ (50.40 lb/ft³).
A 304 stainless steel cryogenic valve body having a mass of 12 kg (26.5 lb) is to be cooled from 300 K (80°F) to 80 K (-315.7°F). Determine the energy that must be removed from the valve body, using the Debye model. The Debye temperature for 304 stainless steel is 0,= 320 K (576°R), and the gas constant is 150.28 J/kg-K (0.0359 Btu/lb-R). If the valve body is cooled using liquid nitrogen at the NBP, determine the volume of liquid nitrogen that will be evaporated during the process. The density for saturated liquid nitrogen at the NBP is 807.3 kg/m³ (50.40 lb/ft³).
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
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Transcribed Image Text:1.10 A 304 stainless steel cryogenic valve body having a mass of 12 kg (26.5 lb) is to
be cooled from 300 K (80°F) to 80 K (-315.7°F). Determine the energy that must be
removed from the valve body, using the Debye model. The Debye temperature for
304 stainless steel is 0,= 320 K (576°R), and the gas constant is 150.28 J/kg-K (0.0359
Btu/lb-R). If the valve body is cooled using liquid nitrogen at the NBP, determine
the volume of liquid nitrogen that will be evaporated during the process. The density
for saturated liquid nitrogen at the NBP is 807.3 kg/m³ (50.40 lb/ft³).
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