| P.C. Tobias deBoer |
Professor Emeritus
Graduate School Professor of Mechanical Engineering
Mechanical and Aerospace Engineering |
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| Research Group Web Page:
| Thermal Systems Engineering Research Group
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| Address: |
184 Rhodes Hall
Cornell University
Ithaca, NY 14853 |
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Phone:
Fax:
E-mail: |
(607) 255-3583
(607) 255-1222
ptd1@cornell.edu |
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Tobias deBoer's main area of interest is the thermodynamic analysis and optimal design of pulse-tube cryocoolers. These devices are replacing Stirling cryocoolers in space as well as ground-based applications. They use either a dual orifice configuration, or an inertance tube. The former type is suitable for operation at low frequencies, the latter for operation at high frequencies. Both types incorporate a regenerator. It appears that thermal and dissipation losses in the regenerator severely limit the maximum attainable performance. Regenerators also are used in Stirling engines, where they lead to similar limitations. An area of recent interest is the rupture energy of pendular rings, with application to the attachment strength of thin films in MEMS devices. |
| Current Projects |
- Thermodynamic Analysis and Design of Pulse-Tube Cryocoolers
- Thermal and dissipation losses in regenerators
- Rupture energy of pendular rings
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| Selected Publications |
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de Boer, P. C. T.
"Optimization of the Orifice Pulse Tube," Cryogenics 40 701-711, 2002. |
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de Boer, P. C. T.
"Maximum Attainable Performance of Pulse Tube Refrigerators," Cryogenics 42 123-125, 2002. |
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de Boer, P. C. T.
"Performance of the Inertance Pulse Tube," Cryogenics 42 209-221, 2002. |
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P.C.T. de Boer, J.-M. Duval, I. Charles and L. Duband
"Piston Resonance in the Orifice Pulse Tube," In Cryocooler 12, edited by R.G. Ross, Jr., Kluwer Academic/Plenum Publishers, pp. 265-273, 2003. |
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de Boer, P. C. T.
"Performance Characteristics of the Double Inlet Pulse Tube," Cryogenics 43 379-391. |
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de Boer, P. C. T.
"Maximum Attainable Performance of Stirling Engines and Refrigerators," J Heat Transfer , 125 911-915, 2003. |
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de Boer, P. C. T.
"Basic Limitations on the Performance of Stirling Engines," Paper IMECE2003-43766, Proceedings of IMECE03, 2003 ASME International Mechanical Engineering Conference & Exposition, Washington, D.C. November 16-21, 2003. |
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de Boer, P. C. T.
"Basic Limitations on the Performance of Stirling Cryocoolers," in Advances in Cryogenic Engineering; Transactions of the Cryogenic Engineering Conference - CEC, Vol. 49, edited by J. Waynert et. al., American Institute of Physics, 1396-1403, 2004. | |
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| Education |
| Ph.D. 1962 |
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University of Maryland |
| Ingenieur 1955 |
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Technological University Delft, The Netherlands | | |
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