An Advanced Vapor Compression Loop (AVCL) for high temperature lift for heat rejection to hot lunar surface during lunar daytime was developed. The loop consists of an evaporator, a compressor, a condenser, and an electronic expansion valve. Different types of evaporators were evaluated in this study: a circular tube evaporator, a circular tube evaporator with a twisted tape, a circular tube evaporator with a wick, and a circular tube evaporator with a wick and a twisted tape. The evaporators were tested with two different compressors. The first was a 0.5hp oil-less compressor and the second was a 5.3hp compressor that used oil as lubricant. A heat exchanger (recuperator) was used to subcool the high pressure liquid and to superheat the low pressure vapor. Tests were performed with and without the recuperator. Vapor superheat during the tests was controlled with an electronic expansion valve controller. The working fluid was R134a. The results show that the heat source-to-working fluid thermal resistance of the circular tube evaporator with the wick and the twisted tape was one-third of that of the circular tube evaporator. The recuperator was able to decrease the vapor quality at the evaporator inlet and increase the vapor superheat at the compressor inlet. The evaporators without wicks were able to operate at a heat flux of 5.7W/cm2 with the recuperator and vapor superheat set at 5°C. Evaporators with wicks reached dryout at lower heat fluxes when maintaining superheat at 5°C. However, the wicked evaporators reached a heat flux of 7.6W/cm2 when decreasing superheat below 5°C. A temperature lift of 70°C was achieved with the 5.3hp compressor.
Skip Nav Destination
ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
July 19–23, 2009
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4357-4
PROCEEDINGS PAPER
Evaporators for High Temperature Lift Vapor Compression Loop for Space Applications Available to Purchase
Tadej Semenic,
Tadej Semenic
Advanced Cooling Technologies, Inc., Lancaster, PA
Search for other works by this author on:
Xudong Tang
Xudong Tang
Advanced Cooling Technologies, Inc., Lancaster, PA
Search for other works by this author on:
Tadej Semenic
Advanced Cooling Technologies, Inc., Lancaster, PA
Xudong Tang
Advanced Cooling Technologies, Inc., Lancaster, PA
Paper No:
HT2009-88205, pp. 475-481; 7 pages
Published Online:
March 12, 2010
Citation
Semenic, T, & Tang, X. "Evaporators for High Temperature Lift Vapor Compression Loop for Space Applications." Proceedings of the ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer. San Francisco, California, USA. July 19–23, 2009. pp. 475-481. ASME. https://doi.org/10.1115/HT2009-88205
Download citation file:
8
Views
Related Proceedings Papers
Related Articles
Modeling of Vapor Compression Cycles for Multivariable Feedback Control of HVAC Systems
J. Dyn. Sys., Meas., Control (June,1997)
Analytical and Experimental Analysis of a High Temperature Mercury Thermosyphon
J. Heat Transfer (September,2009)
Ultra-Compact Microscale Heat Exchanger for Advanced Thermal Management in Data Centers
J. Electron. Packag (June,2022)
Related Chapters
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Scope of Section I, Organization, and Service Limits
Power Boilers: A Guide to the Section I of the ASME Boiler and Pressure Vessel Code, Second Edition
Threshold Functions
Closed-Cycle Gas Turbines: Operating Experience and Future Potential