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Design, Analysis, and Testing of a Low Pressure Cryogenic Valve

Title: Design, Analysis, and Testing of a Low Pressure Cryogenic Valve.
Name(s): Gleaton, Anthony James, author
Luongo, Cesar, professor directing thesis
Van Sciver, Steven, committee member
Cartes, David, committee member
Department of Mechanical Engineering, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2004
Publisher: Florida State University
Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The design of a unique liquid nitrogen pumping station requires a unique pressure relief valve. This new relief valve must operate at low pressure differentials, work effectively at low cryogenic temperatures, and release a wide range of nitrogen vapor mass flow rates. A floating valve design was selected, one that requires no springs and relieves pressure based upon the weight of the actuating piston. Before testing began, an analytical flow model of pressure loss through the valve was completed and valve set pressures were calculated. The purpose of the valve testing was to both prove the concept of the valve and verify results from the modeling. Experimental results revealed accurate agreement between the model and the test for low mass flow rates. However, at high mass flow rates, the model and test results did not agree, as the effects of vortices above the valve were not included within the model. While the basic concept and operation of the floating valve were established, further and more precise testing are required to develop a complete understanding of the valve's operation.
Identifier: FSU_migr_etd-4255 (IID)
Submitted Note: A Thesis submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Summer Semester, 2004.
Date of Defense: July 2, 2004.
Keywords: CAPS, Modeling, Nitrogen, Vapor, Testing, Test Analysis, Fluid, Model, Vent, Valve, SMES, Cryogenic, Pressure, Low, Superconducting Magnetic Energy Storage, Relief
Bibliography Note: Includes bibliographical references.
Advisory Committee: Cesar Luongo, Professor Directing Thesis; Steven Van Sciver, Committee Member; David Cartes, Committee Member.
Subject(s): Mechanical engineering
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Host Institution: FSU

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Gleaton, A. J. (2004). Design, Analysis, and Testing of a Low Pressure Cryogenic Valve. Retrieved from