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Title: Magnetic roller gas gate employing transonic sweep gas flow to isolate regions of differing gaseous composition or pressure

Abstract

Disclosed herein is an improved gas gate for interconnecting regions of differing gaseous composition and/or pressure. The gas gate includes a narrow, elongated passageway through which substrate material is adapted to move between said regions and inlet means for introducing a flow of non-contaminating sweep gas into a central portion of said passageway. The gas gate is characterized in that the height of the passageway and the flow rate of the sweep gas therethrough provides for transonic flow of the sweep gas between the inlet means and at least one of the two interconnected regions, thereby effectively isolating one region, characterized by one composition and pressure, from another region, having a differing composition and/or pressure, by decreasing the mean-free-path length between collisions of diffusing species within the transonic flow region. The gas gate preferably includes a manifold at the juncture point where the gas inlet means and the passageway interconnect.

Inventors:
 [1]
  1. (Union Lake, MI)
Issue Date:
OSTI Identifier:
869655
Patent Number(s):
5374313
Application Number:
08/047,975
Assignee:
Energy Conversion Devices, Inc. (Troy, MI) OSTI
DOE Contract Number:  
NREL-ZM-2-11040-7
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
magnetic; roller; gas; gate; employing; transonic; sweep; flow; isolate; regions; differing; gaseous; composition; pressure; disclosed; improved; interconnecting; narrow; elongated; passageway; substrate; material; adapted; move; inlet; means; introducing; non-contaminating; central; portion; characterized; height; rate; therethrough; provides; interconnected; effectively; isolating; region; decreasing; mean-free-path; length; collisions; diffusing; species; preferably; manifold; juncture; interconnect; sweep gas; gas gate; path length; gas inlet; substrate material; gas flow; flow rate; central portion; inlet means; improved gas; interconnecting region; gaseous composition; differing gaseous; /118/136/

Citation Formats

Doehler, Joachim. Magnetic roller gas gate employing transonic sweep gas flow to isolate regions of differing gaseous composition or pressure. United States: N. p., 1994. Web.
Doehler, Joachim. Magnetic roller gas gate employing transonic sweep gas flow to isolate regions of differing gaseous composition or pressure. United States.
Doehler, Joachim. Tue . "Magnetic roller gas gate employing transonic sweep gas flow to isolate regions of differing gaseous composition or pressure". United States. https://www.osti.gov/servlets/purl/869655.
@article{osti_869655,
title = {Magnetic roller gas gate employing transonic sweep gas flow to isolate regions of differing gaseous composition or pressure},
author = {Doehler, Joachim},
abstractNote = {Disclosed herein is an improved gas gate for interconnecting regions of differing gaseous composition and/or pressure. The gas gate includes a narrow, elongated passageway through which substrate material is adapted to move between said regions and inlet means for introducing a flow of non-contaminating sweep gas into a central portion of said passageway. The gas gate is characterized in that the height of the passageway and the flow rate of the sweep gas therethrough provides for transonic flow of the sweep gas between the inlet means and at least one of the two interconnected regions, thereby effectively isolating one region, characterized by one composition and pressure, from another region, having a differing composition and/or pressure, by decreasing the mean-free-path length between collisions of diffusing species within the transonic flow region. The gas gate preferably includes a manifold at the juncture point where the gas inlet means and the passageway interconnect.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {12}
}

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