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Quantitative observations on multiple flow structures inside Ranque Hilsch vortex tube
Descriptive
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Text
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Title
Quantitative observations on multiple flow structures inside Ranque Hilsch vortex tube
Identifier
ETD_1545
Identifier
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051387
Language
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eng
Genre
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theses
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Topic
Mechanical and Aerospace Engineering
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Vortex tubes
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Vortex-motion
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Air flow
Abstract
Ranque-Hilsch vortex tube is a device that separates a flow of gas into two streams simultaneously, one hotter than the inlet and one cooler. Traditionally vortex tubes are mostly operated at high entrance pressures (>10 psig) and always used for cooling operations. There are industrial applications that result in unused pressurized gases. Using vortex tube energy separation may be a method to recover waste pressure energy from high and low pressure sources. In various industrial systems, magnitudes of waste pressure may be lower but may have significant mass flow rates. Hence it is important to make sure that vortex tube provides the required energy separation while harnessing the low pressure but high mass flow rate waste energy and utilizes it for not only cooling but also for heating purposes.
Our recent experimental observations show that in the low inlet pressure regime (<10 psig); vortex tubes behave differently and produce multiple flow structures rather than expected re-circulating cold stream and the columnar hot stream type of flow (simply "Vortex Tube flow" or VT-flow).
This thesis characterizes industrial waste pressure as a reclaimable form of energy, analyzes the effectiveness of 'vortex tube energy separation' in recovering waste energy from low pressure sources, and explores experimentally and theoretically the possibility of multiple flow structures (like Reverse, Elbow, T-flow or VT-flow) inside vortex tube in a low inlet pressure regime.
First time, a study of flow modes in low pressure vortex tubes with small cold fractions has been presented which yielded quantitative confirmation of simple one dimensional model for these flows allowing both predictive capabilities and guidance in design.
Our recent experimental observations show that in the low inlet pressure regime (<10 psig); vortex tubes behave differently and produce multiple flow structures rather than expected re-circulating cold stream and the columnar hot stream type of flow (simply "Vortex Tube flow" or VT-flow).
This thesis characterizes industrial waste pressure as a reclaimable form of energy, analyzes the effectiveness of 'vortex tube energy separation' in recovering waste energy from low pressure sources, and explores experimentally and theoretically the possibility of multiple flow structures (like Reverse, Elbow, T-flow or VT-flow) inside vortex tube in a low inlet pressure regime.
First time, a study of flow modes in low pressure vortex tubes with small cold fractions has been presented which yielded quantitative confirmation of simple one dimensional model for these flows allowing both predictive capabilities and guidance in design.
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electronic resource
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xiv, 116 p. : ill.
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Ph.D.
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Includes bibliographical references (p. 111-115)
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by Sachin Uttamrao Nimbalkar
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Nimbalkar
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Sachin
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Sachin Nimbalkar
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Muller
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Michael
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chair
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Michael R Muller
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Baruh
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Haim
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co-chair
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Haim Baruh
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Shan
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Jerry
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Jerry Shan
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Rossmann
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Tobias
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Tobias Rossmann
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Wright
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Anthony
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Anthony Wright
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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2009
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2009-05
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xx
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Rutgers University Electronic Theses and Dissertations
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ETD
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Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
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doi:10.7282/T3FT8M71
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ETD doctoral
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Open
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Non-exclusive ETD license
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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