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If a pipeline is located between two storage tanks as with example 3.2 (Textbook, p. 142), why should an engineer decide to install the pump close to the tank from which the liquid is to be transferred from?

If a pipeline is located between two storage tanks as with example 3.2 (Textbook, p. 142), why should an engineer decide to install the pump close to the tank from which the liquid is to be transferred from?

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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If a pipeline is located between two storage tanks as with example 3.2 (Textbook, p. 142), why should an engineer decide to install the pump close to the tank from which the liquid is to be transferred from? Is the operation of the pump in example 3.2 safe given the data of the problem?

Example 3.2–Unloading Oil from a Tanker Specified Flow Rate and Diameter General. The following statements apply equally to Examples 3.2, 3.3, 3.4, and 3.5. Fig. E3.2 shows a pump that transfers a steady stream of 35°API crude oil from an oil tanker to a refinery storage tank, both free surfaces being open to the atmosphere. The effective length-including fittings of the commercial steel pipe is 6,000 ft. The discharge at point 4 is 200 ft above the pump exit, which is level with the free surface of oil in the tanker. However, because of an intervening hill, point 3 is at a higher altitude than point 4. Losses between points 1 and 2 may be ignored. The crude oil has the following properties:p = 53 lbm/ft3; µ = 13.2 cP; vapor pressure p, = 4.0 psia. Specific to Example 3.2. Implement the algorithm for a Case 1-type problem. If the pipeline is Schedule 40 with a nominal diameter of 6 in., and the required flow rate is 506 gpm, what pressure p2 is needed at the pump exit? Solve the problem first by hand calculations, and then by a spreadsheet. (3 1,000 ft 4 5,000 ft Storage tank 200 ft Oil tanker (2 1 Fig. E3.2 Unloading tanker with intervening hill (vertical scale exaggerated). Solution
Transcribed Image Text:Example 3.2–Unloading Oil from a Tanker Specified Flow Rate and Diameter General. The following statements apply equally to Examples 3.2, 3.3, 3.4, and 3.5. Fig. E3.2 shows a pump that transfers a steady stream of 35°API crude oil from an oil tanker to a refinery storage tank, both free surfaces being open to the atmosphere. The effective length-including fittings of the commercial steel pipe is 6,000 ft. The discharge at point 4 is 200 ft above the pump exit, which is level with the free surface of oil in the tanker. However, because of an intervening hill, point 3 is at a higher altitude than point 4. Losses between points 1 and 2 may be ignored. The crude oil has the following properties:p = 53 lbm/ft3; µ = 13.2 cP; vapor pressure p, = 4.0 psia. Specific to Example 3.2. Implement the algorithm for a Case 1-type problem. If the pipeline is Schedule 40 with a nominal diameter of 6 in., and the required flow rate is 506 gpm, what pressure p2 is needed at the pump exit? Solve the problem first by hand calculations, and then by a spreadsheet. (3 1,000 ft 4 5,000 ft Storage tank 200 ft Oil tanker (2 1 Fig. E3.2 Unloading tanker with intervening hill (vertical scale exaggerated). Solution
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