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Ethylene flows through a pipeline 10 km long to a receiving station A. At a point 3 km from A, a spur leads off the main pipeline and runs 5 km to a receiving station B. The internal diameter of the main pipeline is 0.20 m and that of the spur is 0.15 m. The flow rates into A and B are regulated by valves at these locations. If the pressure immediately upstream of valve A is 3.88 bar (absolute) and that at B is 3.69 bar when the flow rate into B is 0.63 kg/s, calculate the pressure at the beginning of the main pipeline, assuming that flow in the pipeline is isothermal at a temperature of 20°C. Data: specific volume of ethylene at 200C, 1 bar = 0.870 m³/kg, Fanning friction factor = 0.0045.

Ethylene flows through a pipeline 10 km long to a receiving station A. At a point 3 km from A, a spur leads off the main pipeline and runs 5 km to a receiving station B. The internal diameter of the main pipeline is 0.20 m and that of the spur is 0.15 m. The flow rates into A and B are regulated by valves at these locations. If the pressure immediately upstream of valve A is 3.88 bar (absolute) and that at B is 3.69 bar when the flow rate into B is 0.63 kg/s, calculate the pressure at the beginning of the main pipeline, assuming that flow in the pipeline is isothermal at a temperature of 20°C. Data: specific volume of ethylene at 200C, 1 bar = 0.870 m³/kg, Fanning friction factor = 0.0045.

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
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2- Ethylene flows through a pipeline 10 km long to a receiving station A. At a point 3 km from A, a spur leads off the main pipeline and runs 5 km to a receiving station B. The internal diameter of the main pipeline is 0.20 m and that of the spur is 0.15 m. The flow rates into A and B are regulated by valves at these locations. If the pressure immediately upstream of valve A is 3.88 bar (absolute) and that at B is 3.69 bar when the flow rate into B is 0.63 kg/s, calculate the pressure at the beginning of the main pipeline, assuming that flow in the pipeline is isothermal at a temperature of 20°C. Data: specific volume of ethylene at 200C, 1 bar = 0.870 m³/kg, Fanning friction factor = 0.0045.
Transcribed Image Text:2- Ethylene flows through a pipeline 10 km long to a receiving station A. At a point 3 km from A, a spur leads off the main pipeline and runs 5 km to a receiving station B. The internal diameter of the main pipeline is 0.20 m and that of the spur is 0.15 m. The flow rates into A and B are regulated by valves at these locations. If the pressure immediately upstream of valve A is 3.88 bar (absolute) and that at B is 3.69 bar when the flow rate into B is 0.63 kg/s, calculate the pressure at the beginning of the main pipeline, assuming that flow in the pipeline is isothermal at a temperature of 20°C. Data: specific volume of ethylene at 200C, 1 bar = 0.870 m³/kg, Fanning friction factor = 0.0045.
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