|Areas of Research Expertise||
* Cryogenic refrigeration systems including mixed gas JT systems, reverse-Brayton systems , pulse-tubes, and hybrid cryocoolers
|Web Site||Gregory Nellis' University Webpage|
|Curriculum Vitae (CV)|
|USPTO Published Applications|
Zhu WB, Park JM, White MJ et al., Journal of Vacuum Science & Technology A 29 (2): Mar-Apr 2011. This article reports the evaluation of a Joule-Thomson (JT) cooling system that combines two custom micromachined components-a Si/glass-stack recuperative heat exchanger and a piezoelectrically actuated expansion microvalve.
White MJ, Nellis GF, Klein SA, et al., Journal of Heat Transfer 132 (11): 111801 Nov 2010. This paper presents a numerical model of a perforated plate heat exchanger that accounts for axial conduction, external parasitic heat loads, variable fluid and material properties, and conduction to and from the ends of the heat exchanger.
Zhu WB, White MJ, Nellis GF, et al., Journal of Microelectromechanical Systems 19 (1): 38-47 Feb 2010. This paper reports on amicromachined Si/glass stack recuperative heat exchanger with in situ temperature sensors.
Park JM, Evans AT, Rasmussen K, et al., Journal of Microelectromechanical systems 18 (4): 868-877 Aug 2009. This paper reports on design, fabrication, and testing of a piezoelectrically actuated microvalve with integrated sensors for flow modulation at low temperatures. One envisioned application is to control the flow of a cryogen for distributed cooling with a high degree of temperature stability and a small thermal gradient.
|Recent Artistic Works|
|E-mail Address||[email protected]|
|Phone Number||(608) 265-6626|
|Current University||UW - Madison|
|Address Line 1||1339 Engineering Research Building|
|Address Line 2||1500 Engineering Drive|
|Bachelor's Degree||BS, University of Wisconsin-Madison, Mechanical Engineering, 1992|
|Master's Degree||MS, Massachusetts Institute of Technology, Mechanical Engineering, 1995|
|PhD||PhD, Massachusetts Institute of Technology, Mechanical Engineering, 1997|
|Technologies Available for Licensing|