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Brand Thesis Final__final format approved LW 7-27-18.pdf (3.41 MB)
ETD Abstract Container
Abstract Header
Characterizing the Discharge Quality for a Two-Phase Pumped Loop
Author Info
Brand, Kevin Michael
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1532718701597667
Abstract Details
Year and Degree
2018, Master of Science (M.S.), University of Dayton, Mechanical Engineering.
Abstract
A two-phase pumped refrigerant (R-134a) loop was developed. An energy balance experiment was performed for the preheater, where calculated refrigerant volumetric flow rates differed by no more than 5% from measured flow rates. An energy balance was performed as well for the entire system, and calculated water volumetric flow rates differed by no more than 14% from measured flow rates. A model of the preheater and its power input was constructed and compared to experimental power inputs. The model time constant was 224 seconds and the experimental time constant was 194 seconds. Specified operating conditions were 5 kW heat input to the cold plate with a 96.6 psia discharge pressure. System operating boundaries for this setup were plotted as cold plate inlet subcooling and discharge quality both as functions of preheater input power and pump speed. Preheater power inputs ranged from 0 to 95% full-scale power (0 to 782 W) and pump speeds ranged from 60 to 100% full-scale speed (0.41 to 0.73 GPM). Within operating boundaries, vapor quality was kept at a value of 0.8 or lower. It is very useful to know the boundaries for the system, which could be used for future two-phase pumped loop systems.
Committee
Jamie Ervin, Ph.D. (Advisor)
Larry Byrd, Ph.D. (Committee Member)
Scott Stouffer, Ph.D. (Committee Member)
Pages
73 p.
Subject Headings
Mechanical Engineering
Keywords
two-phase
;
quality
;
pumped loop
;
refrigerant
;
MPCL
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Refworks
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RIS
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Citations
Brand, K. M. (2018).
Characterizing the Discharge Quality for a Two-Phase Pumped Loop
[Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1532718701597667
APA Style (7th edition)
Brand, Kevin.
Characterizing the Discharge Quality for a Two-Phase Pumped Loop.
2018. University of Dayton, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1532718701597667.
MLA Style (8th edition)
Brand, Kevin. "Characterizing the Discharge Quality for a Two-Phase Pumped Loop." Master's thesis, University of Dayton, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1532718701597667
Chicago Manual of Style (17th edition)
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Document number:
dayton1532718701597667
Download Count:
313
Copyright Info
© 2018, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.