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Keynote Speakers

2018 Plenary Speakers

Monday Plenary - July 9,2018 Opening Session, 9:30am - Loeb Playhouse

Andy Pearson -Group Managing Director, Star Refrigeration, Ltd.

Mr. Pearson joined Star Refrigeration in 1986 and has worked in sales and design, including a period as Technical Director prior to his appointment as Managing Director of Star’s Contracts Group in 1998. In 2011 he was appointed Group Engineering Director for Star Refrigeration and its subsidiary companies (Star Mechanical & Electrical Solutions and Starfrost) and in 2015 became Group Managing Director. He is also President of Star’s US-based subsidiary, Azane Inc.  His principal interests are in the design of more efficient refrigeration systems and troubleshooting of faulty, inefficient or unreliable equipment. He also has a wide experience of safety issues related to ammonia and carbon dioxide systems. He has provided technical support in expert witness cases and has given specialist advice in support of general consultancy.

Innovation in Refrigeration and Air-Conditioning

In the last 30 years or so the amount spent on research and development in the refrigeration and air-conditioning sectors seems to have reached unprecedented heights, driven mainly by the phase out of traditional refrigerants and their replacement by a variety of solutions including new fluids which have similar performance but are less harmful to the environment than those that they replace, new ways to use even older substances such as ammonia, carbon dioxide, water and air and new ways of achieving cooling without using the Perkins cycle.  Despite this massive effort the core technology used to provide refrigeration in residential, commercial and industrial systems has not changed much.  It is in fact pretty much the same as in was 60 years ago.

In this wide-ranging and thought-provoking review of innovation in refrigeration and air-conditioning Andy Pearson considers why this might be.  He starts with a basic explanation of what innovation is and looks at some examples of good innovation from other fields.  He considers what defines someone as an innovator and whether these characteristics are innate or can be learned.  Using practical examples he encourages the audience to think like an innovator then looks at some of the areas in which innovation has flourished over 30 years.  The review also considers areas in which the refrigeration and air-conditioning industry has been less successful in innovating and concludes by looking to the future and imagining what new pressures might come to bear and how we can best respond to them.

This presentation should be of interest to everyone who is engaged in research and development, whether as a practical technician or theoretical scientist, or as a senior executive responsible for managing the development process, as a financier responsible for funding it or as a technology user who is eagerly waiting for the next improvement to arrive.

Andy Pearon Keynote Address - 2018 Purdue Conferences

Tuesday Plenary - July 10, 2018 8:30-9:30am - Loeb Playhouse

Ed Arens, Director, Center for the Built Environment - University of California, Berkeley

Professor Arens is the Director of the Center for the Built Environment, a NSF-founded Industry/University Cooperative Research Center.  Within this organization he works with over 40 industrial and governmental partners to plan and perform research of mutual interest. 

From 1988 to 2017 he also served as Director of the Center for Environmental Design Research, one of 28 Organized Research Units at UC Berkeley.

Dr. Arens has been Principal Investigator for a large number of State, Federal, and ASHRAE grants on improving building energy performance and occupant comfort in large building systems. 

He has recently been working on wirelessly linked personal comfort systems, effects of ceiling fans on comfort, building ‘performance measurement protocols’ for ASHRAE/USGBC, preparing new ASHRAE standard method for determining comfort limits to solar radiation indoors, energy and comfort effects of minimum VAV setpoints. and mapping human comfort requirements at body segment and smaller scales.

Personal comfort system research at the Center for the Built Environment, University of California Berkeley

The engineered indoor environment consists almost entirely of systems in which temperature and humidity are controlled while air movement and other asymmetrical influences are minimized.  Such systems are simple to visualize, design, and control. They are however inherently electricity-intensive, and consume in aggregate a large fraction of the world’s energy.  They also leave at least 20% of their occupancies dissatisfied. 

Future buildings will save energy and improve satisfaction by using personal comfort systems (PCS) having the ability to offset a widened range of indoor temperatures while also overcoming the variability in occupant individual preferences.  Per occupant, PCS requires two orders of magnitude less energy than central systems, while delivering equivalent or better comfort.  It also can address the significant metabolic transients experienced by people in the workplace.  Finally, PCS enables inherently efficient passive and radiant building systems to respond more quickly and be viable outside their normal climatic ranges.

The Center for the Built Environment at UC Berkeley studies building technology in laboratory and field studies, addressing energy impacts and environmental quality from both building and occupant perspectives.  To translate findings to practice, it collaborates with over 40 industry partners, contributes to professional and regulatory codes and standards, and has been spawning startups that commercialize its work.

Ed Arens Plenary Talk - 2018 Purdue Conferences

Tuesday All Conference Luncheon - July 10, 2018 - 12-1:30pm - Purdue Memorial Union Ballrooms

Jeff Rhoads, Professor, Mechanical Engineering at Purdue University

Jeffrey F. Rhoads is a Professor in the School of Mechanical Engineering at Purdue University and is affiliated with both the Birck Nanotechnology Center and Ray W. Herrick Laboratories at the same institution.  He also serves as the Director of Practice for MEERCat Purdue: The Mechanical Engineering Education Research Center at Purdue University and the Associate Director of PERC: The Purdue Energetics Research Center. Dr. Rhoads received his B.S., M.S., and Ph.D. degrees, each in mechanical engineering, from Michigan State University in 2002, 2004, and 2007, respectively. Dr. Rhoads’ current research interests include the predictive design, analysis, and implementation of resonant micro/nanoelectromechanical systems (MEMS/NEMS) for use in chemical and biological sensing, electromechanical signal processing, and computing; the dynamics of parametrically-excited systems and coupled oscillators; the thermomechanics of energetic materials (including explosives, pyrotechnics, and propellants); additive manufacturing; and mechanics education. Dr. Rhoads is a Member of the American Society for Engineering Education (ASEE) and a Fellow of the American Society of Mechanical Engineers (ASME), where he serves on the Design Engineering Division’s Technical Committee on Vibration and Sound.  Dr. Rhoads is a recipient of numerous research and teaching awards, including the National Science Foundation’s Faculty Early Career Development (CAREER) Award; the Purdue University School of Mechanical Engineering’s Harry L. Solberg Best Teacher Award (twice), Robert W. Fox Outstanding Instructor Award, B.F.S. Schaefer Outstanding Young Faculty Scholar Award, and Ruth and Joel Spira Award; the ASEE Mechanics Division’s Ferdinand P. Beer and E. Russell Johnston, Jr. Outstanding New Mechanics Educator Award; and the ASME C. D. Mote Jr., Early Career Award.  In 2014, Dr. Rhoads was included in ASEE Prism Magazine’s 20 Under 40.

Smart Buildings, Smarter Sensors

In recent years, there has been a concerted effort to leverage the technical advancements associated with the Internet of Things (IoT) in smart building systems.  This effort has been strongly motivated by the practical appeal of automatically and synergistically controlling a building's heating, ventilation, air conditioning, lighting, and security systems at room, zone, and whole-building scales.  Despite this strong appeal and appreciable research effort, the potential of smart building systems is yet to be fully realized, largely due to a technical bottleneck in the sensing space.

Simply put, comparatively few building sensors were explicitly developed with an IoT-like framework in mind, and few existing commercial solutions are optimized for pervasive use, where cost, scale, reliability, and lifespan are key customer drivers.  In an attempt to help address this technical gap, a team of researchers associated with the Center for High Performance Buildings at Purdue University recently launched a research thrust in the smart building sensor space.  Their initial project, sponsored by ARPA-E, seeks to develop building-integrated, microscale sensors (BIMS), which are capable of monitoring CO2 levels in indoor environments, while meeting or exceeding strict metrics on cost, sensitivity, selectivity, and operational lifetime.  These sensors will form the technical backbone of a room occupancy monitoring system suitable for the control of local ventilation setbacks.  This talk will describe preliminary efforts on this research project, and perhaps more importantly, a vision for future smart building sensors optimized for use with an IoT framework.

Jeff Rhoads Luncheon Talk - 2018 Purdue Conferences

Wednesday Plenary - July 11, 2018 - 8:30-9:30am - Loeb Playhouse

Jack Elson, Retiree, Emerson Climate Technologies

Mr. Elson received his Ph.D. in Mechanical Engineering from Purdue University in 1972, and is a proud graduate of Herrick Laboratories where he conducted research on the modelling and computer simulation of discharge pulsations for reciprocating compressors. In his earlier academic career, he received both B.S. and M.S degrees in Mechanical Engineering from Bradley University where he also served as an Instructor and Assistant Professor for 6 years.

In 1973, Mr. Elson pursued an opportunity at Copeland Corporation (Emerson Climate Technologies, Inc.) where he began a 35-year career in the new product development of AC and refrigeration compressors of both the reciprocating and scroll type, including serving as the Engineering Director for the first production Copeland Scroll Compressor products for AC and heat pump applications in 1987. Since retiring from Emerson in 2008, he has continued to serve as a part time consultant involved with numerous new product design reviews.

As an attendee at every International Compressor Conferences at Purdue, Mr. Elson has presented numerous technical papers and served multiple times as both a session chair and short course presenter. His participation and discussions with both professors and conference attendees has been an important component of his overall enjoyment working in the HVAC profession.

The Past, Present & Future of Reciprocating Compressors

Reciprocating compressor technology has offered a unique contribution to the gas compression needs of mankind as we progressed from the earliest efforts to pressurize air to the multiple applications today for reliable efficient compressors for both refrigeration and air conditioning usage.  Beginning with the need for air flow to increase fire temperature for early metalworking, pressurized air has been an important contributor to applications such as construction, mining and the industrial revolution in general.  The early reciprocating air compressors used for this purpose became the foundation for early refrigerant compressors used for both household refrigerators and residential air conditioning. 

Both reciprocating compressor design technologies and the vapor compression cycle were necessary inventions to lead the way to a practical solution for modern food preservation and environmental comfort.  These will be reviewed along with a review of reciprocating compressor evolution and the various technology challenges and developments required to improve both durability and efficiency as the product type evolved from external drive, to semi-hermetic, to hermetic design variations.  Today all product types have successful applications with such examples as external drive for automotive AC and transport refrigeration, semi-hermetic for commercial refrigeration and AC, and hermetic for household refrigeration and residential AC and heat pump.  

Reciprocating compressor product development has benefited significantly from the instrumentation and analytical tools developed to better understand and improve product durability and performance. These will be reviewed along with a review of future development possibilities for the reciprocating compressor.

Jack Elson Plenary Talk - 2018 Purdue Conferences

Thursday Plenary - July 12, 2018 - 8:30-9:30am - Loeb Playhouse

Reinhard Radermacher, Co-founder of the Center for Environmental Energy Engineering

Reinhard Radermacher holds a PhD in physics and conducts research in heat transfer and working fluids for energy conversion systems — in particular heat pumps, air-conditioners, refrigeration systems, and integrated cooling heating and power systems. His work resulted in more than 400 publications, numerous invention records and 12 patents. He has co-authored three books.  His research includes the development of software for the design and optimization of heat pumps and air-conditioners which is now in use at more than 80 companies worldwide.

Dr. Radermacher is Minta Martin professor of Mechanical Engineering and director and co-founder of the Center for Environmental Energy Engineering.  He was awarded the Institute of Refrigeration J&E Hall Gold Medal and the IIR Gustav Lorentzen Medal for his innovation in the field of refrigeration. 

He is Fellow ASHRAE and also holds memberships in ASME, SAE, DKV and IIR and serves as the editor of the ASHRAE Science and Technology for the Built Environment. 

Future Perspectives of AC/R/HP 

Before a backdrop of technology development in general and challenges facing our society at large, the presentation will explore opportunities for energy efficiency in buildings in general and HVAC&R in particular.  Emphasis is placed on vapor compression, refrigerant choice and include a brief discussion of non-vapor compression systems and their components.  The presentation will conclude with examples of the potential contributions resulting from a systematic approach to component and system optimization.  

Reinhard Radermacher Plenary Talk - 2018 Purdue Conferences