3. You have a piping system in your plant that has gotten old and rusty. The pipe is 2 in. sch 40 steel, 6000 ft long. You find that it takes 35 hp to pump water through the system at a rate of 100 gpm. a. What is the equivalent roughness of the pipe? b. If you replace the pipe with the same size new commercial steel pipe, what percentage savings in the required power would you expect at a flow rate of 100 gpm?

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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3. You have a piping system in your plant that has gotten old and rusty. The pipe is 2 in. sch
40 steel, 6000 ft long. You find that it takes 35 hp to pump water through the system at a rate
of 100 gpm.
a. What is the equivalent roughness of the pipe?
b. If you replace the pipe with the same size new commercial steel pipe, what
percentage savings in the required power would you expect at a flow rate of 100
gpm?
Transcribed Image Text:3. You have a piping system in your plant that has gotten old and rusty. The pipe is 2 in. sch 40 steel, 6000 ft long. You find that it takes 35 hp to pump water through the system at a rate of 100 gpm. a. What is the equivalent roughness of the pipe? b. If you replace the pipe with the same size new commercial steel pipe, what percentage savings in the required power would you expect at a flow rate of 100 gpm?
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