Riley Barta

Riley Barta

Assistant Professor of Mechanical Engineering

School of Mechanical Engineering
Purdue University
585 Purdue Mall
West Lafayette, IN 47907-2088

Office: HLAB 1018

Phone: 765-494-6917


  • B.S., Purdue University, '16
  • Ph.D., Purdue University, '20

Research Interests

  • Modeling and Analysis of Thermal Systems
  • Heat Pumping, Air Conditioning and Refrigeration Technologies
  • High Performance Buildings
  • Refrigerant and Lubricant Properties

Awards and Recognitions

  • ASHRAE New Investigator Award
  • DKV-Young Talent Award for Ph.D. Dissertation (Nachwuchs-Ehrung)
  • Alexander von Humboldt Research Fellowship
  • William E. and Florence R. Perry Graduate Teaching Fellowship
  • ASHRAE Grant-in-Aid Recipient with Life Member Club Distinction
  • Bottomley Undergraduate Research Fellowship

Selected Publications

Cop, M., Barta, R.B., Thomas, C., and Hesse, U. (2023), "Experimental Investigation of a Heat Pump Tumble Dryer with a Zeotropic Refrigerant Mixture," International Journal of Refrigeration.

Stöckel, K., Nosbers, R., Barta, R.B., and Thomas, C. (2023). "Measurement of Vapour Pressure, Miscibility and Thermal Conductivity for Binary and Ternary Refrigerant Lubricant Mixtures in the Context of Heat Pump Tumble Dryers," International Journal of Refrigeration.

Bederna, B.G. and Barta, R.B., "Potential of Power and Heat Prosumers for Climate-Neutral Energy Systems," Proc. of the 19th International Refrigeration and Air Conditioning Conference at Purdue, Paper 2360, West Lafayette, IN, USA July 10-14, 2022.

Ossorio, R., Navarro-Peris, E., Barta, R.B., and Lopez, A., "Impact of Lubricant in Variable Speed Heat Pumps with R290," Proc. of the 19th International Refrigeration and Air Conditioning Conference at Purdue, Paper 2215, West Lafayette, IN, USA July 10-14, 2022.

Xu, Y., Pan, F., Barta, R.B., and Hesse, U. "A Numerical Model for Solid-Gaseous Two-Phase Flow of CO2 Flow with Sublimation in Pipes," Proc. of the 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants, Paper 47, Trondheim, Norway, June 13-17, 2022.

Karaefe, R.E., Post, P., Venzik, V., Wotzka, P., Barta, R.B., Di Mare, F., and Müller, D. (Accepted). "On Integrated Fluid Screening and Turbomachinery Design for Optimized Industrial Heat Pumps," Journal of Engineering for Gas Turbines and Power.

Bederna, B.G., Barta, R.B., and Hesse, U., "Composition Optimization of Zeotropic Mixtures for ORC Systems Considering Constraints," Proc. of the 6th International Seminar on ORC Power Systems, Paper 21, Munich, Germany, October 11-13, 2021.

Barta, R.B., Dhillon, P., Braun, J.E., Ziviani, D., and Groll, E.A. (2021). "Design and Optimization Strategy for Ejector Applied in Refrigeration Cycle," Applied Thermal Engineering. 189.

Bahman, A.M., Barta, R.B., Groll, E.A. and Ziviani, D. (2021). "Theoretical Analysis of the CO2 Expansion Process," Transcritical CO2 Heat Pump: Fundamentals and Applications, pp. 99-135.

Barta, R.B., Ziviani, D., and Groll, E.A. (2020). "Experimental Analyses of Different Control Strategies of an R-410A Split-System Heat Pump by Employing a Turbomachinery Expansion Recovery Device," International Journal of Refrigeration. 112, pp. 189-200.