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Mechanical Engineering
Phone: (208) 885-6579
Toll-free: 88-88-UIDAHO
Fax: (208) 885-9031
Email: medept@uidaho.edu

Engineering Physics (EP)
Room 324K

875 Perimeter Drive MS 0902
Moscow, ID 83844-0902


Contact Denise Engebrecht
Phone: (208) 364-6123
Fax: (208) 364-3160
Email: denisee@uidaho.edu

Idaho Water Center
322 E. Front Street
Boise, ID 83702


Idaho Falls

Contact Debbie Caudle
Phone: (208) 282-7983
Fax: (208) 282-7929
Email: debrac@uidaho.edu

1776 Science Center Drive, Suite 306
Idaho Falls, Idaho 83402

Distance Education

Engineering Outreach
Phone: (208) 885-6373
Toll-free: (800) 824-2889
Fax: (208) 885-9249
E-mail: outreach@uidaho.edu


Steven Penoncello

Steve Penoncello, Ph.D., P.E.

Office: GJ 234D
Phone: 208-885-9048
Email: stevep@uidaho.edu
Mailing Address: 875 Perimeter Drive, MS 0902

Moscow, Idaho 83844-0902

College of Engineering
Mechanical Engineering Department

Home Town: Hibbing, MN
Campus Locations: Moscow
With UI Since 1985

  • Research/Focus Areas
    • Thermophysical Properties of Fluids and Fluid Mixtures
    • Nonequilibrium Thermodynamics
    • Exergy Analysis of Processes and Systems
  • Biography

    Dr. Penoncello has been teaching courses and doing research in the thermal sciences since 1980. He first taught at the University of Idaho in 1985 as a Visiting Assistant Professor of Mechanical Engineering while he was completing his doctoral studies. He returned to the University of Idaho 1990 as an Associate Professor of Mechanical Engineering. In 1995, he was selected by the mechanical engineering faculty to be the department chair. He served in that capacity from 1995-1999. In 1999, he moved into the dean’s office in the College of Engineering as the associate dean for research and graduate studies, where he served until 2004. During 2004-2005, Dr. Penoncello took a sabbatical leave and worked with Spraycool, Inc., a regional company that develops innovative technologies for the thermal management of electronics. Upon completion of his sabbatical leave, he returned to his faculty position in the Department of Mechanical Engineering. He also serves as the director of the Center for Applied Thermodynamic Studies (CATS). CATS is an internationally recognized research center where basic analytical and experimental research is done to quantify the thermophysical properties of fluids and fluid mixtures.

  • Selected Publications
    • Schwarzkopf, J.D., Penoncello, S.G, and Dutta, P., “Enhanced Boiling Heat Transfer in Mesochannels,” Int. J. Heat and Mass Transfer, v52, issues 25-26, 5802-5813, 2009.

    • Leachman, J.W., Jacobsen, R.T, and Penoncello, S.G., “Fundamental Equations of State for Parahydrogen, Normal Hydrogen and Orthohydrogen”, J. Phys. Chem. Ref. Data, v38, n3, 721 – 748, 2009.

    • Leachman J.W., Jacobsen, R.T, Penoncello, S.G., and Huber, M.L., “Current Status of Transport Properties of Hydrogen” Int. J. Thermophysics, v28, 773 – 795, 2007.

    • Jacobsen, R.T, *Leachman, J.W., Penoncello, S.G., and Lemmon, E.W., “Current Status of Thermodynamic Properties of Hydrogen.” Int. J. Thermophysics, v28, 758 – 772, 2007.

    • *Paulus, M.E. and Penoncello, S.G., “Correlation for the Carbon Dioxide and Water Mixture Based on the Lemmon-Jacobsen Mixture Model and the Peng-Robinson Equation of State,” Int. J. Thermophysics, v27, n5, 1373-1386, 2006.

    • *Dillon, H.E. and Penoncello, S.G., “A Fundamental Equation for the Thermodynamic Properties of Ethanol,” Int. J. Thermophysics, v25, n2, 321 – 335, 2004.

    • Penoncello, S.G, Lemmon, E.W., Jacobsen, R.T, and Shan, Z., “A Fundamental Equation for Trifluoromethane (R-23),” J. Phys. Chem. Ref. Data, v32, n4, 1473-1499, 2003

  • Awards and Honors
    • Teaching Excellence Award, University of Idaho, 2010
    • Outstanding Faculty Award, University of Idaho, Naval ROTC, May 2009
    • Outstanding Educator Award, University of Idaho, College of Engineering, May, 2008
    • Outstanding Faculty Award, University of Idaho, Naval ROTC, May 2007

Steve's Links

“Die Energie der Welt ist constant. Die Entropie der Welt strebt einem Maximum zu.” Rudolph Clausius, physicist and mathematician, considered one of the founders of classical thermodynamics (1822-1888)

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