Liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.35 kg / s and has a specific mass of 1000 kg / m³, specific specific 4 kJ / (kg K), viscosity 8 x 10-6 Pa s, and a thermal conductivity of 0.55 W / (m) K). The assumed viscosity change is negligible. The internal diameter of the pipe is 25 mm with a thickness of 3 mm made of stainless steel (k = 15 W / [m ° C]). The outside temperature is 15 ° C. If the external convective heat coefficient is 18 W / (m² K), calculate the heat loss at steady conditions per meter of pipe length. A. Find the convection coefficient in the pipe = W / m² ° C. b. Calculate Heat loss per meter pipe length = watt
Liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.35 kg / s and has a specific mass of 1000 kg / m³, specific specific 4 kJ / (kg K), viscosity 8 x 10-6 Pa s, and a thermal conductivity of 0.55 W / (m) K). The assumed viscosity change is negligible. The internal diameter of the pipe is 25 mm with a thickness of 3 mm made of stainless steel (k = 15 W / [m ° C]). The outside temperature is 15 ° C. If the external convective heat coefficient is 18 W / (m² K), calculate the heat loss at steady conditions per meter of pipe length. A. Find the convection coefficient in the pipe = W / m² ° C. b. Calculate Heat loss per meter pipe length = watt
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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Liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.35 kg / s and has a specific mass of 1000 kg / m³, specific specific 4 kJ / (kg K), viscosity 8 x 10-6 Pa s, and a thermal conductivity of 0.55 W / (m) K). The assumed viscosity change is negligible. The internal diameter of the pipe is 25 mm with a thickness of 3 mm made of stainless steel (k = 15 W / [m ° C]). The outside temperature is 15 ° C. If the external convective heat coefficient is 18 W / (m² K), calculate the heat loss at steady conditions per meter of pipe length.
A. Find the convection coefficient in the pipe = W / m² ° C.
b. Calculate Heat loss per meter pipe length = watt
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