James E. Braun Herrick Professor of Engineering Director, Center for High Performance Buildings

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1 James E. Braun Herrick Professor of Engineering Director, Center for High Performance Buildings Contact Information: Center for High Performance Building Ray W. Herrick Laboratories 177 S. Russell St., West Lafayette, IN Phone: Research Interests Intelligent Building Controls Automated Diagnostics for HVAC&R Building and Equipment Modeling Alternative Heat Pumping Technologies Waste-Heat Recovery and Small-Scale Power Production Background Dr. Braun has worked in the field of air conditioning and refrigeration for over 35 years in both university and industrial settings. His practical experience includes working as a development engineer for advanced cooling equipment, a software developer for simulation tools in modeling buildings and large-scale heating and cooling plants, and a developer of intelligent control algorithms for large commercial energy management and control systems. He has been awarded 5 patents. His research combines the use of computer modeling, optimization, and experiments to study and improve the performance of thermal systems. Overall, Dr. Braun has led or been involved with proposals leading to research awards totaling over $30 million and has over 300 journal and conference papers published or in review, five of which received best paper awards. Within ASHRAE, Dr. Braun has been chairman of technical committees on Smart Building Systems and Building Operation Dynamics and chairman of the Research Administration Committee. He has been an Associate Editor for the International Journal of HVAC&R Research. He is a Fellow within ASHRAE, a Fellow within IBPSA and has received the ASHRAE Distinguished Service Award, the E.K. Campbell Award of Merit, in recognition of outstanding service and achievement in teaching and/or research in subjects relating to the industry and professions represented by ASHRAE, and the Early Achievement Award from the International Building Performance Simulation Association. Education University of Massachusetts, B.Sc. Mechanical Engineering, 1976 University of Wisconsin, M.Sc. Mechanical Engineering, 1980 University of Wisconsin, Ph.D. Mechanical Engineering, 1988 Honors and Awards IBPSA Fellow, 2013 Best Paper Award: ASHRAE, 2007 ASHRAE Fellow, 2006 E.K. Campbell Award of Merit, 2005 Best Student Paper Award, IBPSA USA Conference, 2004.

2 ASHRAE Distinguished Service Award, 2003 Best Paper Award, Noise Control and Acoustic Division, ASME IMECE, 2001 Best Poster Award, ASHRAE, 1999 ASHRAE Technology Award, 1 st Place Region V, Crosby Field Award for best paper published throughout ASHRAE 1993 Early Achievement Award: IBPSA Joseph F. Cuba Memorial Award: ASHRAE, 1989 Best Symposium Paper Award: ASHRAE, 1988 Grant-In-Aid Award: ASHRAE, 1987 Patents Patent No. 8,667,797: Organic Rankine Cycle with Flooded Expansion and Internal Regeneration, 2014 Patent No. 7,631,508: Apparatus and Method for Determining Refrigerant Charge Level, 2009 Patent No. 7,401,475: Thermodynamic Systems Operating with Near-Isothermal Compression and Expansion Cycles, 2008 Patent No. 5,778,683: Thermal Storage System Control and Method, 1998 Patent No. 5,040,377: Cooling System with Improved Fan Control and Method, 1991 Book and Book Chapters 1. Braun, J.E. et al. Building Operating Dynamics, ASHRAE Handbook of HVAC Applications, 1991, Braun, J.E., Groll, E.A. and Klein, S.A., Modeling and Design of Vapor Compression Systems, Short Course Notes, Purdue University, W. Lafayette, IN, 1997, 1999, Braun, J.E. et al., Supervisory Control Strategies and Optimization, ASHRAE Handbook of HVAC Applications, 1999, Katipamula, S., Pratt, R. G., and Braun, J.E., Building System Diagnostics and Predictive Maintenance, CRC Handbook for HVAC&R Engineering, Chapter 7, pp , Braun, J., Domanski, P., Groll, E., McLinden, M., Nellis, G., Radermacher, R., Simulation Tools for Vapor Compression System and Component Analysis, Short Course Notes, Purdue University, W. Lafayette, IN, July, Mitchell, J.W and Braun, J.E., Principles of Heating Ventilation and Air Conditioning in Buildings, Wiley Inter-Science, Braun, J.E., Building Controls, Encyclopedia of Systems & Control, Springer- Verlag London Yuill, D.P. and Braun, J.E., Methodology for Evaluating FDD Protocols Applied to Unitary Systems, Chapter 39, Automated Diagnostics and Analytics for Buildings, CRC Press, 2015.

3 Journal Publications within Last 5 Years 1. Zhou, X. and Braun, J.E., An Inverse Model for Transient Cooling and Dehumidifying Coil Performance, ASHRAE Transactions, Vol. 114, Pt. 1, 11 Pages, Mitchell, J.W. and Braun, J.E., Using the Analogy Approach to Extrapolate Performance Data for Cooling Towers, ASHRAE Transactions, Vol. 114, Pt. 1, Lee, K.H. and Braun, J.E., Model-Based Demand-Limiting Control of Building Thermal Mass, Building and Environment, Vol. 43, Pages , Lee, K.-H. and Braun, J.E., Development of Methods for Determining Demand-Limiting Setpoint Trajectories in Buildings Using Short-Term Measurements, Building and Environment, Vol. 43, Pages , Lee, K.-H. and Braun, J.E., Evaluation of Methods for Determining Demand- Limiting Setpoint Trajectories in Buildings Using Short-Term Measurements, Building and Environment, Vol. 43, Pages , Lee, K.-H. and Braun, J.E., A Data-Driven Method for Determining Zone Temperature Trajectories that Minimize Peak Electrical Demand, ASHRAE Transactions, Vol. 114, Pt. 2, 10 pages, Lee, K.H. and Braun, J.E., Performance Evaluation of a Dynamic Inverse Model with EnergyPlus Model Simulation for Building Cooling Loads ", Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol.20, No.3, Pages , Li, H. and Braun, J.E. A Method for Modeling Adjustable Throat-Area Expansion Valves Using Manufacturers Rating Data, HVAC&R Research, Vol. 14, No. 4, Pages , Mathison, M., Braun, J.E., and Groll, Modeling and Testing of a Two-Stage Rotary Compressor, HVAC&R Research, Vol. 14, No. 5, Pages , Bendapudi, S., Braun, J.E., and Groll, E.A., A Comparison of Moving Boundary and Finite Volume Formulations for Transients in Centrifugal Chillers, International Journal of Refrigeration, Vol. 31, No. 8, Pages , Hugenroth, J., Braun, J.E., Groll, E.A., and King, G., Experimental Investigation of a Liquid-Flooded Ericsson Cycle Cooler, International Journal of Refrigeration, Vol. 31, No. 7, Pages , Wichman, A. and Braun, J.E., Fault Detection and Diagnostics for Commercial Coolers and Freezers, HVAC&R Research, Vol. 15, No. 1, Pages , Wichman, A. and Braun, J.E., A Smart Mixed Air Temperature Sensor,

4 HVAC&R Research, Vol. 15, No. 1, Pages , Li, H. and Braun, J.E. Development, Evaluation and Demonstration of a Virtual Refrigerant Charge Sensor, HVAC&R Research, Vol. 15, No. 1, Pages , Hugenroth, J., Braun, J.E., Groll, E.A., and King, G., Evaluation of a Liquid- Flooded Ericsson Cycle Cooler for Vending Machine Applications, ASHRAE Transactions, Vol. 115, Pt. 1, Li, H. and Braun, J.E. Decoupling Features for Diagnosis of Reversing and Check Valve Faults in Heat Pumps, International Journal of Refrigeration, Vol. 32, No. 2, Pages , Li, H. and Braun, J.E. Virtual Refrigerant Pressure Sensors for Use in Monitoring and Fault Diagnosis of Vapor Compression Equipment, HVAC&R Research, Vol. 15, No. 3, Pages , Paek, Insu, Mongeau, L., Braun, J.E., Kang, S.Y., Phase of Acoustic Impedance and Performance of Standing Wave Thermoacoustic Coolers, Journal of Mechanical Science and Technology, Vol. 23, No. 5, Pages , Kim, J., Braun, J.E., and Groll, E.A., A Hybrid Method for Refrigerant Flow Balancing in Multi-Circuit Evaporators: Upstream versus Downstream Flow Control, International Journal of Refrigeration, Vol. 32, No. 6, Pages , Kim, J., Braun, J.E., and Groll, E.A., Evaluation of a Hybrid Method for Refrigerant Flow Balancing in Multi-Circuit Evaporators, International Journal of Refrigeration, Vol. 32, No. 6, Pages , Shen, B., Braun, J.E., and Groll, E.A., Improved Methodologies for Simulating Unitary Air Conditioners at Off-Design Conditions, International Journal of Refrigeration, Vol. 32, No. 7, Pages , Hengeveld, D.W., Braun, J.E., Groll, E.A., and Williams, A. Determination of Hot- and Cold-Case Design Orbits for Robust Thermal Control Subsystem Design, Journal of Spacecraft and Rockets, Vol. 46, No. 6, Pages , Hengeveld, D.W., Braun, J.E., Groll, E.A., Mathison, M.A., and Williams, A. Review of Modern Spacecraft Thermal Control Technologies, Vol. 16, No. 2, Pages , HVAC&R Research, Mathison, M., Braun, J., Groll, E., Performance Limit for Economized Cycles with Continuous Refrigerant Injection, International Journal of Refrigeration, Vol. 34, No. 1, Pages , Bell, I., Groll, E.A., and Braun, J.E., Performance of Vapor Compression Systems with Compressor Oil Flooding and Regeneration, International Journal of Refrigeration, Vol. 34, No. 1, Pages , 2011.

5 26. Palmiter, L, Kim, J., Larson, B., Francisco, P. W., Groll, E.A., and Braun, J.E., Measured Effect of Airflow and Refrigerant Charge on the Seasonal Performance of an Air-Source Heat Pump using R-410A, Energy and Buildings Vol. 43, Pages , Shen, B., Braun, J.E., and Groll, E.A., The Impact of Refrigerant Charge, Air Flow and Expansion Devices on the Measured Performance of an Air-Source Heat Pump, 19 pages, Vol. 117, Part 2, ASHRAE Transactions, Shen, B., Braun, J.E., and Groll, E.A., Modeling Improvements for Air-Source Heat Pumps Using Different Expansion Devices at Varied Charge Levels, 13 pages, Vol. 117, Part 2, ASHRAE Transactions, Hengeveld, D.W., Braun, J.E., and Groll, E.A., Optimal Placement of Electronic Components to Minimize Heat Flux Non-Uniformities, Vol. 48, No. 4, Pages , Journal of Spacecraft and Rockets, Hengeveld, D.W., Braun, J.E., and Groll, E.A., Optimal Distribution of Electronic Components to Balance Environmental Fluxes, Vol. 48, No. 4, Pages , Journal of Spacecraft and Rockets, Li, H., Yu, D., and Braun, J.E., A Review of Virtual Sensing Technology and Application in Building Systems, Vol. 17, No. 5, Pages , HVAC&R Research, Kim, W., Braun, J.E., Evaluation of the Impacts of Refrigerant Charge on Air Conditioner and Heat Pump Performance, Vol. 35, No. 7, Pages , International Journal of Refrigeration, Bell, I.H., Lemort, V., Groll, E.A, Braun, J.E., King, G.B, Horton, W.T., Liquid- Flooded Compression and Expansion in Scroll Machines Part I: Model Development, Vol. 35, No. 7, Pages , International Journal of Refrigeration, Bell, I.H., Lemort, V., Groll, E.A, Braun, J.E., King, G.B, Horton, W.T., Liquid Flooded Compression and Expansion in Scroll Machines - Part II: Experimental Testing and Model Validation, Vol. 35, No. 7, Pages , International Journal of Refrigeration, Bell, I.H., Groll, E.A, Braun, J.E., King, G.B, Horton, W.T., Optimization of a Scroll Compressor for Liquid Flooding, Vol. 35, No. 7, Pages , International Journal of Refrigeration, Kim, W., Braun, J.E., Performance Evaluation of a Virtual Refrigerant Charge Sensor, Vol. 36, Pages , International Journal of Refrigeration, Bell, I.H., Groll, E.A, Braun, J.E, Horton, W.T., Experimental Testing of an Oil- Flooded Hermetic Scroll Compressor, Vol. 36, No. 7, Pages , International Journal of Refrigeration, Bell, I.H., Groll, E.A, Braun, J.E, Horton, W.T., A Computationally Efficient Hybrid Leakage Model for Positive Displacement Compressors and

6 Expanders, Vol. 36, No. 7, Pages , International Journal of Refrigeration, Mathison, M., Braun, J.E, Groll, E.G., Modeling of a Novel Spool Compressor with Multiple Vapor Refrigerant Injection Ports, Vol. 36, No. 7, Pages , International Journal of Refrigeration, Yuill, D.P. and Braun, J.E., Evaluating the Performance of FDD Protocols Applied to Air-Cooled Unitary Air Conditioning Equipment, Vol. 19, No. 7, Pages , HVAC&R Research, Bach, C.K., Groll, E.A., Braun, J.E., and Horton, W.T, Application of a Hybrid Control of Expansion Valves to a Domestic Heat Pump and a Large Room Cooling System, Vol. 19, No. 7, Pages , HVAC&R Research, Cheung, H. and Braun, J.E., Simulation of Fault Impacts for Vapor Compression Systems by Inverse Modeling Part I: Component Modeling and Validation, Vol. 19, No. 7, Pages , HVAC&R Research, Cheung, H. and Braun, J.E., Simulation of Fault Impacts for Vapor Compression Systems by Inverse Modeling Part II: System Modeling and Validation, Vol. 19, No. 7, Pages , HVAC&R Research, Mathison, M., Braun, J.E, Groll, E.G., Approaching the Performance Limit for Economized Cycles Using Simplified Cycles, Vol. 45, pp , International Journal of Refrigeration, Woodland, B.J., Krishna, A. Groll, E.A., Braun, J.E., Horton, W.T., Garimella, S.V., Thermodynamic Comparison of Organic Rankine Cycles Employing Liquid-Flooded Expansion or a Solution Circuit, In Press, Applied Thermal Engineering, Cheung, H. and Braun, J.E., Component-Based, Gray-Box Modeling of Ductless Multi-Split Heat Pump Systems, In Press, International Journal of Refrigeration, Kim, J., Tzempelikos, A., and Braun, J.E., Review of modeling approaches for passive radiant ceiling cooling systems, In Press, Journal of Building Performance Simulation, Cheung, H. and Braun, J.E., Performance Mapping for Variable Ductless Heat Pump Systems in Heating and Defrost Operation, In Press, HVAC&R Research, Bell, I.H., Groll, E.A, Braun, J.E, Horton, W.T., Comprehensive Analytic Solutions for the Geometry of Symmetric Constant-Wall-Thickness Scroll Machines, In Press, International Journal of Refrigeration, Nyika, S., Holloway, S.O., Braun, J.E., and Horton, W.T., Generalized Performance Maps for Variable Speed Ducted Residential Heat Pumps, In Press, ASHRAE Transactions, Nyika, S., Holloway, S.O., Braun, J.E., and Horton, W.T., Generalized

7 Performance Maps for Single and Dual Speed Residential Heat Pumps, In Press, ASHRAE Transactions, Bach, C.K., Groll, E.A., Braun, J.E., and Horton, W.T., Development of a Virtual EXV Flow Sensor for Applications with Two-Phase Flow Inlet Conditions, Accepted for publication in International Journal of Refrigeration, Cheung, H. and Braun, J.E., Performance Comparisons for Variable-Speed Ductless and Single-Speed Ducted Residential Heat Pumps, Accepted for Publication in International Journal of Refrigeration, Ramaraj, R, Yang, B., Braun, J.E., Groll, E.A., Horton, W.T., Experimental Analysis of Oil Flooded R410A Scroll Compressor, Accepted for Publication in International Journal of Refrigeration, Jaramillo, J., Jeon, B., Braun, J.E., Horton, W.T., Schuster, D., Simulation Assessment of Free Cooling Technology for a Large Campus, Accepted for Publication in ASHRAE Transactions, Bach, C.K., Groll, E.A., Braun, J.E., and Horton, W.T., Mitigation of Air Flow Maldistribution in Evaporators, Accepted for publication in Applied Thermal Engineering, Kim, W., Braun, J.E., Extension of a Virtual Refrigerant Charge Sensor, Accepted for publication in International Journal of Refrigeration, Kim, D. and Braun, J.E., A General Approach for Generating Reduced-Order Models for Large Multi-Zone Buildings, Accepted for publication in Journal of Building Performance Simulation, 2014.