
NSF Org: |
CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems |
Recipient: |
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Initial Amendment Date: | February 12, 2003 |
Latest Amendment Date: | August 11, 2005 |
Award Number: | 0238841 |
Award Instrument: | Standard Grant |
Program Manager: |
Theodore L. Bergman
CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems ENG Directorate for Engineering |
Start Date: | July 1, 2003 |
End Date: | June 30, 2009 (Estimated) |
Total Intended Award Amount: | $400,107.00 |
Total Awarded Amount to Date: | $405,107.00 |
Funds Obligated to Date: |
FY 2005 = $5,000.00 |
History of Investigator: |
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Recipient Sponsored Research Office: |
4200 FIFTH AVENUE PITTSBURGH PA US 15260-0001 (412)624-7400 |
Sponsor Congressional District: |
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Primary Place of Performance: |
4200 FIFTH AVENUE PITTSBURGH PA US 15260-0001 |
Primary Place of
Performance Congressional District: |
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Unique Entity Identifier (UEI): |
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Parent UEI: |
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NSF Program(s): | TTP-Thermal Transport Process |
Primary Program Source: |
app-0105 |
Program Reference Code(s): |
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Program Element Code(s): |
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Award Agency Code: | 4900 |
Fund Agency Code: | 4900 |
Assistance Listing Number(s): | 47.041 |
ABSTRACT
Abstract
Proposal Number: CTS-0238841
Principal Investigator: Laura Schaefer
Affiliation: University of Pittsburgh
Proposal Title: CAREER: Microscale two-phase zeotropic flow in energy systemss
The PI will investigate the coupled heat transfer and fluid flow behavior of two-phase zeotropic mixtures in micro- and minichannels. Zeotropic mixtures are distinct in that the concentrations of their liquid and vapor phases are continually changing in the two-phase region. The temperature glide between the concentration profiles can cause both component accumulation at the vapor-liquid interface and drastically nonlinear temperature versus enthalpy contours. On the microscale, these behaviors can be exacerbated by the increased effect of intermolecular interactions. The thermodynamic, heat transfer, and fluid flow properties of these mixtures will be studied through theoretical modeling, numerical simulation, and experimental observation. The results of this project will provide the tools needed to create effective miniature vapor compression and absorption cycles, pumping mechanisms, and extraction devices. This research can also be used to increase the efficiency of heat exchangers that utilize micromachined components, which may have a large impact on the costs and emissions generated by energy consumption. These types of energy pplications are appealing to students who are concerned about the environment and to students who are interested in current technology. High school, undergraduate, and graduate students will be introduced to energy systems through a four-tier integrated approach. The proposal has been funded by the Thermal Transport and Thermal Processing Program of the Chemical and Transport Systems Division.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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