Dennis O'Neal
Holdredge-Paul Professor & Associate Dean for Research and Interim Deputy Director of TEES
Office: 325 Mechanical Engineering Office Building
Phone: 979-845-5337 Fax: 979-845-3081
Email: doneal@tamu.edu

Interest Areas
Heating, ventilating, and air conditioning; frost formation on heat exchangers; heat pump system defrost performance and dynamics; ventilation air heat pumps; and aerosol mixing in ventilation systems.
Education
B.S. Texas A&M University, Nuclear Engineering, December 1973
M.S. Oklahoma State University, Mechanical Engineering, May 1977
Ph.D. Purdue University, Mechanical Engineering, December 1982
Experience
Department Head, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, May, 2004 - Present.
Interim Department Head, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, May, 2003 – May 2004.
Associate Department Head, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, September, 2002 – May, 2003.
Sandia National Laboratories, Albuquerque, NM, August 2000-August 2001 and May 2002-August 2002.
Professor, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, September, 1994 – August 2002.
Associate Professor, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, September, 1988 - August, 1994.
Assistant Professor, Department of Mechanical Engineering, Texas A&M University, College Station, Texas, January, 1983 - August, 1988.
Graduate Teaching and Research Assistant, Purdue University, West Lafayette, Indiana, Aug., 1980 – Dec., 1982.
Research Staff Member, Oak Ridge National Laboratory, Oak Ridge, Tennessee, July, 1977 - August, 1980.
Project Engineer, Fluid Power Research Center, Oklahoma State University, Stillwater, Oklahoma, Project Engineer, July, 1974 - May, 1977.
Recent Research Projects
“Performance of Systems with Plate and Spine Fin Condensers after Contamination and Cleaning”, Co-Principal Investigator, funded by the Trane Company.
“Sampling, Transport, and Collection of Bio-aerosols”, Co-Principal Investigator, funded by the U.S. Army.
“Application of Single Point Representative Sampling to the Remote Waste Handling Facility (RWHF)”, Co-Principal Investigator, funded by Butler Construction.
“Design and Testing of an Aerosol Sampling and Transport System (ASTS)”, Co-Principal Investigator, funded by Siemens Dematic.
“Review of State-of-the Art for Heat Pumps used in Ventilation Air Applications”, Co-Principal Investigator, funded by the Electric Power Research Institute.
“Evaluation of Fin Staging Methods for Minimizing Coil Frost Accumulation”, Principal Investigator, funded by American Society of Heating, Refrigerating, and Air Conditioning Engineers.
Distinctions
Sigma Xi
Phi Kappa Phi Honor Society, 1992
Outstanding Undergraduate Teaching Award, Dept. of Mechanical Engineering, Texas A&M University, 1994
Phillips Petroleum Fellow, Texas A&M University, 1996
Distinguished Teaching Award, Dwight Look College of Engineering, Texas A&M
University, 1997
Senior Fellow, Texas Engineering Experiment Station, 1997
Distinguished Service Award, ASHRAE, 1997
E.D. Brockett Professorship, Dwight Look College of Engineering, Texas A&M University, 1998
Fellow, ASHRAE, 1998
Holdredge/Paul Professor, Department of Mechanical Engineering, Sept. 2002.
Recent Publications
R. Bassiouny and D. O’Neal, “Analysis of Refrigerant Flow and Deformation for a Flexible Short-Tube using a Finite Element Model”, International Journal of Refrigeration, Vol. 27, No. 2, pp. 176-183, March 2004.
V. Payne and D. L. O’Neal, “A Mass Flow Rate Correlation for Refrigerants and Refrigerant Mixtures Flowing Through Short Tubes”, International Journal of HVAC&R Research, Vol. 10, No. 1, pp. 73-87, Jan. 2004.
R.J. Watters, D.L. O’Neal, and J. Yang, “Frost/Defrost Performance of a Three-Row Fin Staged Heat Pump Evaporator”, ASHRAE Transactions: Research, Vol. 108, Pt. 2, June 2002.
Y.C. Kim, D.L. O’Neal, W.V. Payne, and M. Farzad, “Refrigerant Flow through Flexible Short-tube Orifices”, International Journal of HVAC&R Research, Vol. 8, No. 2, pp. 179-190, April, 2002.
D. L. O’Neal, A. Rodriguez, M. Davis, and S. Kondepudi,, “Return Air Leakage Impact on Air Conditioner Performance in Humid Climates”, ASME Journal of Solar Energy Engineering, Vol. 124, No. 1, pp. 63-69, February, 2002.
R. Bassiouny and D.L. O’Neal, “A Numerical Study of Pressure Distribution and Flow through Rigid Short-tube Orifices”, ASHRAE Transactions: Research, Vol. 108, Pt. 1, January, 2002.
R. J. Watters, D. L. O’Neal, and J. Yang, “Effect of Fin Staging on Frost/Defrost Performance of a Two-Row Heat Pump Evaporator under Heavy Frosting Conditions”, ASHRAE Transactions: Research, Vol. 107, Pt. 2, June 2001.


