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The below figure shows a pump that transfers a steady streanı 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 cornmercial steel pipe is 6,000 fl. The discharge at point 4 is 200 ft above the pump exit, which is level with the free sarface of oil in the tanker. However, because of an intervening hill, point 3 is at a higher altitude than point 4. Losses between points I and 2 may be ignored. The crude oil has the following properties: Density p-53 lbm/ft; Viscosity u=13.2 cP, Vapour Pressure Pv-4.0 psia

The below figure shows a pump that transfers a steady streanı 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 cornmercial steel pipe is 6,000 fl. The discharge at point 4 is 200 ft above the pump exit, which is level with the free sarface of oil in the tanker. However, because of an intervening hill, point 3 is at a higher altitude than point 4. Losses between points I and 2 may be ignored. The crude oil has the following properties: Density p-53 lbm/ft; Viscosity u=13.2 cP, Vapour Pressure Pv-4.0 psia

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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The below figure shows a pump that transfers a steady stream of 35 API Crnde 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 conmercial 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: Density p = 53 Ibm/ft3; Viscosity u= 13.2 cP, Vapour Pressure Pv = 4.0 psia 1,000 ft 5,000 ft Storage tank 200 ft Oil tanker 98 F CH e to search
Transcribed Image Text:The below figure shows a pump that transfers a steady stream of 35 API Crnde 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 conmercial 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: Density p = 53 Ibm/ft3; Viscosity u= 13.2 cP, Vapour Pressure Pv = 4.0 psia 1,000 ft 5,000 ft Storage tank 200 ft Oil tanker 98 F CH e to search
CASE 1-Type Problem If the pipeline is Schedule 40 with a nominal diameter of 6 in., and the required flow rate is 506 gpni, what pressure P2 is needed at the pump exit? Solve the problern first by manual calculations. CASE 2- Type Problem If the pipeline is now specified to be of Schedule 40 with a nominal diameter of 6 in., and the available pressure at the pump exit is P2 = 132.7 psig, what flow rate Q (gpm) can be expected? Answer the following additional questions: • If the combination of pump and motor is 80% efficient how much electrical power (kW) is needed to drive the pump? • If, in order to avoid vapour lock, the pressure in the pipeline must always be above the vapor pressure of the crude oil, what is the maximum permissible elevation of point 3 relative to point 4? • If the flow in the pipeline were at the upper limit of being laminar, what pump exit pressure would then be needed? (Answer this part without using the friction factor plot. Instructions Set out your work properly. Be clear, neat and concise. • Plagiarism is taking someone else's thought, writing or invention and claiming it as your own. Examples of plagiarism include: 98°F Clear
Transcribed Image Text:CASE 1-Type Problem If the pipeline is Schedule 40 with a nominal diameter of 6 in., and the required flow rate is 506 gpni, what pressure P2 is needed at the pump exit? Solve the problern first by manual calculations. CASE 2- Type Problem If the pipeline is now specified to be of Schedule 40 with a nominal diameter of 6 in., and the available pressure at the pump exit is P2 = 132.7 psig, what flow rate Q (gpm) can be expected? Answer the following additional questions: • If the combination of pump and motor is 80% efficient how much electrical power (kW) is needed to drive the pump? • If, in order to avoid vapour lock, the pressure in the pipeline must always be above the vapor pressure of the crude oil, what is the maximum permissible elevation of point 3 relative to point 4? • If the flow in the pipeline were at the upper limit of being laminar, what pump exit pressure would then be needed? (Answer this part without using the friction factor plot. Instructions Set out your work properly. Be clear, neat and concise. • Plagiarism is taking someone else's thought, writing or invention and claiming it as your own. Examples of plagiarism include: 98°F Clear
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