Author: Richard David Present
Publisher:
ISBN:
Category : Gases
Languages : en
Pages : 16
Book Description
The separation of a binary gas mixture by diffusion through a capillary of radius r depends on the fact that the molecules have different masses m sub i and mean speeds v sub i. When the inlet pressure is so low that the mean free path lambda is much greater than r, the flow is diffusive and the separation factor (at zero outlet pressure) has its maximum value (m sub 1/m sub 2)(1/2). At high pressures (lambda (less than or equal r) no separation occurs. This paper treats the intermediate case (lambda approx. r) where the transfer of forward momentum from light to heavy molecules in unlike collisions equalizes the transport velocities and decreases the separation factor. As the inlet pressure rises, this effect makes the flow nonseparative before it becomes viscous. Flow equations are derived by equating the momentum acquired by the light component from the pressure gradient to the momentum lost to the wall plus that transferred to the other component. The viscous effects are treated as a small additive perturbation on the flow. The integrated flow equations express the separation factor as a function of the inlet and outlet pressures.
Separation of a Gas Mixture Flowing Through a Long Tube at Low Pressure
Author: Richard David Present
Publisher:
ISBN:
Category : Gases
Languages : en
Pages : 16
Book Description
The separation of a binary gas mixture by diffusion through a capillary of radius r depends on the fact that the molecules have different masses m sub i and mean speeds v sub i. When the inlet pressure is so low that the mean free path lambda is much greater than r, the flow is diffusive and the separation factor (at zero outlet pressure) has its maximum value (m sub 1/m sub 2)(1/2). At high pressures (lambda (less than or equal r) no separation occurs. This paper treats the intermediate case (lambda approx. r) where the transfer of forward momentum from light to heavy molecules in unlike collisions equalizes the transport velocities and decreases the separation factor. As the inlet pressure rises, this effect makes the flow nonseparative before it becomes viscous. Flow equations are derived by equating the momentum acquired by the light component from the pressure gradient to the momentum lost to the wall plus that transferred to the other component. The viscous effects are treated as a small additive perturbation on the flow. The integrated flow equations express the separation factor as a function of the inlet and outlet pressures.
Publisher:
ISBN:
Category : Gases
Languages : en
Pages : 16
Book Description
The separation of a binary gas mixture by diffusion through a capillary of radius r depends on the fact that the molecules have different masses m sub i and mean speeds v sub i. When the inlet pressure is so low that the mean free path lambda is much greater than r, the flow is diffusive and the separation factor (at zero outlet pressure) has its maximum value (m sub 1/m sub 2)(1/2). At high pressures (lambda (less than or equal r) no separation occurs. This paper treats the intermediate case (lambda approx. r) where the transfer of forward momentum from light to heavy molecules in unlike collisions equalizes the transport velocities and decreases the separation factor. As the inlet pressure rises, this effect makes the flow nonseparative before it becomes viscous. Flow equations are derived by equating the momentum acquired by the light component from the pressure gradient to the momentum lost to the wall plus that transferred to the other component. The viscous effects are treated as a small additive perturbation on the flow. The integrated flow equations express the separation factor as a function of the inlet and outlet pressures.
Technical Data Digest
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1180
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1180
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 742
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 742
Book Description
Technical Information Pilot
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 694
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 694
Book Description
Inorganic Membranes Synthesis, Characteristics and Applications
Author: R. Bhave
Publisher: Springer Science & Business Media
ISBN: 9401165475
Category : Science
Languages : en
Pages : 331
Book Description
Here is the first book devoted completely to inorganic membrane separations and applications. It provides detailed information on all aspects of the development and utilization of both commercial and developmental inorganic membranes and membrane-based processes, pointing out their key advantages and limitations as separation tools. Characteristics, technological advances, and future applications of inorganic membranes are discussed in depth. An overview of the origins of these membranes provides a basis for understanding emerging technologies in the field. Coverage of thermal, chemical, surface, and mechanical properties of inorganic membranes includes discussion of pore diameter, thickness, and membrane morphology. You'll gain valuable insights into membrane modification, as well as the design and operation of membrane filtration units. Also included are sections on how to analyze mechanisms that affect flux feature models for prediction of micro- and ultrafiltration flux that help you minimize flux decline. Descriptions of cross-flow membrane filtration and common operating configurations clarify the influence of important operating parameters on system performance. Parameters influencing solute retention properties during ultrafiltration are identified and discussed or treated in detail.
Publisher: Springer Science & Business Media
ISBN: 9401165475
Category : Science
Languages : en
Pages : 331
Book Description
Here is the first book devoted completely to inorganic membrane separations and applications. It provides detailed information on all aspects of the development and utilization of both commercial and developmental inorganic membranes and membrane-based processes, pointing out their key advantages and limitations as separation tools. Characteristics, technological advances, and future applications of inorganic membranes are discussed in depth. An overview of the origins of these membranes provides a basis for understanding emerging technologies in the field. Coverage of thermal, chemical, surface, and mechanical properties of inorganic membranes includes discussion of pore diameter, thickness, and membrane morphology. You'll gain valuable insights into membrane modification, as well as the design and operation of membrane filtration units. Also included are sections on how to analyze mechanisms that affect flux feature models for prediction of micro- and ultrafiltration flux that help you minimize flux decline. Descriptions of cross-flow membrane filtration and common operating configurations clarify the influence of important operating parameters on system performance. Parameters influencing solute retention properties during ultrafiltration are identified and discussed or treated in detail.
Air Emissions from Municipal Solid Waste Landfills, Background Information for Proposed Standards and Guidelines
Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 600
Book Description
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 600
Book Description
List
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 564
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 564
Book Description
Confidential Documents
Author: United States. Army Air Forces
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 1252
Book Description
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 1252
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1124
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1124
Book Description
Official Gazette of the United States Patent and Trademark Office
Author:
Publisher:
ISBN:
Category : Patents
Languages : en
Pages : 918
Book Description
Publisher:
ISBN:
Category : Patents
Languages : en
Pages : 918
Book Description