Fluid Transport

Pipes

Jean-Paul Duroudier

• Publisher: ISTE Press - Elsevier
• Year: 2016
• ISBN:
  9780081017791
• Topic: Sciences physiques
• Subtopic: Mécanique des fluides

Fluid Transport: Pipes, part of the Industrial Equipment for Chemical Engineering set, provides a description and calculation of the essential equipment used for fluid transport. Gas-liquid flows are studied with regard to the nature of this type of flow, along with the pressure drop that they may trigger.

Many numerical examples are offered, and the calculation of a fluid transport line is detailed. The vacuum technique and the behavior of non-Newtonian liquids is thoroughly presented, and the author also provides the methods needed for understanding the equipment used in applied thermodynamics to encourage students and engineers to self build the programs they need. Chapters are complemented with appendices that provide additional information and associated references.

• Contains practical applications of ejectors and thermo-compressors
• Establishes pipe diameter thickness
• Includes studies in general and other types of valves
• Presents process parameters and the calculation of a control
• Provides a theoretical study of control valves and gas pipelines

1

Fluid Ejectors and Gas Ejectors

Abstract

Consider a convergent followed by a divergent. Between them is a neck with a constant cross-section, and the driving fluid goes through this convergent–divergent.

Keywords

Consumption; Driving fluid; Fluid Ejectors; Gas Ejectors; Global compression ratio; Nozzle; Stability; Suction fluid; Thermocompressors

1.1 General

1.1.1 Principle of an ejector

Consider a convergent followed by a divergent. Between them is a neck with a constant cross-section, and the driving fluid goes through this convergent–divergent.

Using the Bernoulli equation, we can describe the flow of an incompressible fluid:

$\mathrm{\rho }\frac{{\mathrm{V}}^2}{2}+\mathrm{P}=\mathrm{cste}$

In other words, the more the velocity increases, the more the pressure diminishes.

At the neck, the speed is at its maximum and the pressure is at its minimum. Consequently, this location can be used for the arrival of suction fluid piping.

We will see that, for a simple fluid, the conservation of momentum should be emplo...