This question is designed to help you understand the constant mass expansion (CME) experiment for an oil mixture. A cylinder is divided by a piston. Oil sample is at the top of the cylinder and the water, used as a pressurizing fluid, is at the bottom of the cylinder. The top side (oil-sample side) of the cylinder is a closed system. During a CME process, pressure in the cylinder is gradually decreased from above to below the saturation pressure at a constant temperature, i.e. from P₁ to Ps, and the volume of the oil sample should be record at each pressure step. In the figure below, assume that when pressure is decreased from P₁ to Ps, the pressure decrease in every step is the same. 1. (3 points) Complete the figure below by indicating the position of piston as well as interface between liquid and vapor, if any, at each pressure step. Position of piston at P, has been given. 2. (2 points) Connect the geometric centers of all the pistons and make some observations. Oil sample in liquid Piston Water P₁>>Psat P₂>Psat P3-Psat P4
This question is designed to help you understand the constant mass expansion (CME) experiment for an oil mixture. A cylinder is divided by a piston. Oil sample is at the top of the cylinder and the water, used as a pressurizing fluid, is at the bottom of the cylinder. The top side (oil-sample side) of the cylinder is a closed system. During a CME process, pressure in the cylinder is gradually decreased from above to below the saturation pressure at a constant temperature, i.e. from P₁ to Ps, and the volume of the oil sample should be record at each pressure step. In the figure below, assume that when pressure is decreased from P₁ to Ps, the pressure decrease in every step is the same. 1. (3 points) Complete the figure below by indicating the position of piston as well as interface between liquid and vapor, if any, at each pressure step. Position of piston at P, has been given. 2. (2 points) Connect the geometric centers of all the pistons and make some observations. Oil sample in liquid Piston Water P₁>>Psat P₂>Psat P3-Psat P4
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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Transcribed Image Text:This question is designed to help you understand the constant mass expansion (CME) experiment for an
oil mixture. A cylinder is divided by a piston. Oil sample is at the top of the cylinder and the water, used
as a pressurizing fluid, is at the bottom of the cylinder. The top side (oil-sample side) of the cylinder is a
closed system. During a CME process, pressure in the cylinder is gradually decreased from above to below
the saturation pressure at a constant temperature, i.e. from P₁ to Ps, and the volume of the oil sample
should be record at each pressure step. In the figure below, assume that when pressure is decreased from
P₁ to Ps, the pressure decrease in every step is the same.
1. (3 points) Complete the figure below by indicating the position of piston as well as interface
between liquid and vapor, if any, at each pressure step. Position of piston at P, has been given.
2. (2 points) Connect the geometric centers of all the pistons and make some observations.
Oil sample in
liquid
Piston
Water
P₁>>Psat
P₂>Psat
P3-Psat
P4<Pat
Ps<<Psat
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