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Radermacher, Reinhard

Reinhard Radermacher
Minta Martin Professor
Director, Center for Environmental Energy Engineering
Department of Mechanical Engineering
Center for Environmental Energy Engineering
4164A Glenn L. Martin Hall, Building 088
University of Maryland
College Park, MD 20742
Email: 
Phone: 
301-405-5286

Research Interests 

  • Vapor Compression Air-conditioning
  • Heat Pumping and Refrigeration Systems
  • Single and Multi-Stage Absorption and Adsorption Systems
  • Conventional and Natural Working Fluids and Working Fluid Mixtures
  • Solar Cooling
  • Ocean Thermal Energy Technology
  • Cooling, Heating and Power (CHP) Systems
  • Software for the Design and Optimization of Thermal Systems

Background 

Dr. Radermacher is an internationally recognized expert in energy conversion systems; in particular integrated Cooling, Heating and Power (CHP) Systems, heat pumps, air-conditioners and refrigeration systems. His work has resulted in over 250 publications, including 3 books, numerous invention records and 10 patents. He was a visiting scientist and NATO scholar at the National Institute of Standards and Technology before joining the University of Maryland.

Education 

  • Ph.D., Physics, Technical University Munich, Germany, 1981
  • M.S., Physics Technical University Munich, Germany, 1977

Honors and Awards 

  • 2006, ASHRAE Fellow
  • 2004, ASHRAE Exceptional Service Award
  • 2002, ASHRAE Distinguished Service Award
  • 2001 Inductee, A. James Clark School of Engineering Innovation Hall of Fame
  • William E. Kirwan Inventor of the Year Award, 1997
  • Faculty Achievement Award, ERC, 1996
  • Invention of the Year Award, 1995.

Professional Memberships and Service 

  • Director, Center for Environmental Energy Engineering (CEEE)
  • ASHRAE Fellow, 2006
  • ASHRAE Member: TC 7.1, Refrigerators, 1992-1999
  • Program Chair, 1994-1996
  • TC 8.3, Heat Activated Systems; held positions of Secretary, Vice Chair, and Chair
  • IIR (International Institute of Refrigeration), President, Commission B2, 1999-2003
  • U.S. Representative to International Energy Agency, Annex XIII, 1986-1990
  • International Journal of Refrigeration, and Associate Editor (1998-2002), Editor (2002-present) HVAC&R Research Journal of ASHRAE
  • Reviewer, Applied Thermal Engineering; International Journal of Heat and Mass Transfer; International Journal of Thermophysics; Numerical Heat Transfer, Chemical Engineering Research and Design, Part A; Transactions of the American Society of Heating, Refrigeration, and Air-Conditioning Engineers; Solar Energy Engineering; American Society of Mechanical Engineers, Transactions, and Conference Contributions
  • International Institute of Refrigeration
  • Conference Co-Chairman, International Sorption Heat Pump Conference, Denver, 2005
  • Conference Co-Chairman, Int. Absorption Heat Pump Conference, New Orleans, 1994.

Selected Publications 

2010

  • Fernandez, N., Y. Hwang, R. Radermacher, "Comparison of CO2 Heat Pump Water Heater Performance with Baseline Cycle and Two High COP Cycles,"  International Journal of Refrigeration, Vol. 33, pp. 635-644, 2010.
  • Aynur, T., Y. Hwang, R. Radermacher, "Field Performance Measurements Of A Heat Pump Desiccant Unit in Humidification Mode," Energy and Buildings, In Press, Vol. 42, Issue 5, pp. 678-683, May 2010.
  • Aynur, T., Y. Hwang, R. Radermacher, "Integration of VRF and Heat Pump Desiccant Systems for the Heating Season," Energy and Buildings, Vol. 42, Issue 4, pp. 468-476, April 2010.
  • Aynur, T., Y. Hwang, R. Radermacher, "Integration of VRF and Heat Pump Desiccant Systems for the Cooling Season," Applied Thermal Engineering, Vol. 30, Issues 8-9, pp. 917-927, June 2010.

2009

  • Nayak, S., Y. Hwang, R. Radermacher, "Performance Characterization of Gas Engine Generator Integrated With a Liquid Desiccant Dehumidification System," Applied Thermal Engineering, Vol. 29, February 2009.
  • Aynur, T., Y. Hwang, R. Radermacher, "Simulation Comparison of VAV and VRF Air Conditioning Systems in an Existing Building for the Cooling Season," Energy in Buildings, Vol. 41, Issue 11, pp. 1143-1150, November 2009 .
  • Kalinowski, Y. Hwang, R. Radermacher, S. Al Hashimib, P. Rodgers, "Application of Waste Heat Powered Absorption Refrigeration System to the LNG Recovery Process," International Journal of Refrigeration, Vol. 32, Issue 4, pp. 687-694, June 2009.
  • Wang, X., Y. Hwang, R. Radermacher, "Two-Stage Heat Pump System with Vapor-Injected Scroll Compressor Using R410A as a Refrigerant," International Journal of Refrigeration, Vol. 32, pp. 1442-1451, 2009.
  • Aynur, T., Y. Hwang, R. Radermacher, "Simulation of a VAV Air Conditioning System in an Existing Building for the Cooling Mode," Energy and Buildings, Vol. 41, pp. 922-929, 2009.
  • Nayak, S., Y. Hwang, R. Radermacher, "Performance Characterization of Gas Engine Generator Integrated with a Liquid Desiccant Dehumidification System," Applied Thermal Engineering, Vol. 29, pp. 479-490, 2009.

2008

  • Wang, X., Y. Hwang, R. Radermacher, "Investigation of Potential Benefits of Compressor Cooling," Applied Thermal Engineering, Vol. 29, October 2008.
  • Hwang, Y., R. Radermacher, T. Hirata, "Oil Mass Fraction Measurement of CO2/PAG Mixture," International Journal of Refrigeration, Vol. 31, March 2008.
  • Winkler J, V. Aute, R. Radermacher, "Comprehensive Investigation of Numerical Methods in Simulating a Steady-State Vapor Compression System," International Journal of Refrigeration, Vol. 31, Issue 5, pp. 930-942, August 2008.
  • Hwang, Y., R. Radermacher, A. Al-Alili, I. Kubo, "Review of Solar Cooling Technologies," HVAC&R Research, Vol. 14, No. 3, pp. 507-528, 2008.
  • Gado, A., Y. Hwang, R. Radermacher, "Dynamic Behavior of Mobile Air Conditioning Systems," HVAC&R Research, Vol. 14, No. 2, 2008.
  • Aynur, T., Y. Hwang, R. Radermacher, "Field Performance Measurements of a Heat Pump Desiccant Unit in Dehumidification Mode," Energy and Buildings, Vol. 40, pp. 2141-2147, 2008.

2007

  • Winkler, J., V. Aute, R. Radermacher, "Comprehensive Investigation of Numerical Methods in Simulating a Steady-State Vapor Compression System," International Journal of Refrigeration, September 2007.

Related News 

Radermacher and Hwang Awarded New Patent
Mechanical Engineering professors awarded patent for advancements in air conditioning technology. January 14, 2014

UMD Researchers Win $1.5 Million Department of Energy Award to Improve Home Cooling Efficiency
The Center for Environmental Energy Engineering to collaborate with the Oak Ridge National Laboratory. January 17, 2013

Professor Reinhard Radermacher to Receive Distinguished International Service Award

Mechanical Engineering Professor honored for contributions to international institutional programs. October 23, 2012

New Minta Martin Professors Named
Historic honor recognizes full professors who have made significant scholarly contributions. July 19, 2012

Clark School Faculty Team Wins a UMD Invention of the Year Award
Their novel "natural timestamp" improves security and editing of audio, visual recordings. April 18, 2012

Student Exchange Program Hosted by CEEE Expanding
Center of Environmental Energy Engineering has hosted a student exchange program for more than 25 years. April 12, 2012

Radermacher and Hwang Receive Funding Through Trento-ISR Collaboration
Mechanical Engineering faculty participate in joint project wtih Italian province and Clark School's Institute for Systems Research. February 24, 2012

Collaborative international projects funded in solar power, cell-based systems, and ultra-low power systems
Research is part of agreement between Autonomous Province of Trento, Italy, and University of Maryland. February 16, 2012

Eisele, Hwang, and Radermacher Win Best Technical Paper Award
SAE/IMechE Vehicle Thermal Managment Systems Conference Awards Best Technical Paper November 28, 2011

Radermacher Leads Roadmapping Worskhop on Advanced Cooling Technologies for EPRI
Electric Power Research Institute turns to CEEE for assistance. November 28, 2011

Engineering Students Take Part in Executive Time Management Seminar
Seminar focuses on fine tuning basic management skills November 28, 2011

Abdullah A. Al-Abdulkarem Receives Honorable Mention for Poster
ME Student acknowledged by ASME for poster on enhanced oil recovery. November 22, 2011

Eisele, Hwang, and Radermacher Win Best Technical Paper Award
CEEE professors and ME grad student have strong showing at VTMS 10 Conference. August 24, 2011

Hwang Honored with ASHRAE's Distinguished Service Award
Dr. Yunho Hwang, CEEE Associate Director, to be recognized for his service contributions. March 9, 2010

Visiting German Students Complete Engineering Undergraduate Requirements at UMD
Engineering interns from Mannheim, Germany enjoy UMD experience. November 30, 2009

How Your Cell Phone Keeps Its Cool
For making today's electronics cooler--literally--Bar-Cohen wins Luikov Medal. November 16, 2009

Hwang Appointed Associate Director of CEEE
Dr. Hwang will oversee day-to-day operations of the world renowned research facility. February 3, 2009

Course brings students to South Korea
Five Maryland students, professor travel to Pusan National University for ENME 635 July 3, 2008

Energy Education and Research Collaboration Conducts First Workshop
Maryland faculty and Petroleum Institute review cooperation success of past year. February 1, 2008

Can Your Building Pass an ‘Energy Audit’?
Energy Systems Engineering grad students perform energy conservation assessments on local buildings. November 1, 2007

Mechanical Engineering Recognizes Faculty Accomplishments
Edward B. Magrab honored at reception recognizing distinguished service to campus and department. May 16, 2007

Exchange Visitor Training Program Approaches 20th Year
Research exchange that began in CEEE now brings international flavor to Clark School. April 23, 2007

ME Faculty Honored at Research Leaders Luncheon
Nine ME Faculty honored on November 14. December 15, 2006

Radermacher Elevated to ASHRAE Fellow
Professor Reinhard Radermacher was recently elevated to the grade of Fellow of ASHRAE. July 15, 2006

ME Faculty & Students Dominate Invention Awards
Co-Inventor Greg Jackson Winner in Physical Sciences Category April 15, 2006

2006 ME Research Review Day Highlights
Research Review Day held on March 20, 2006 at the University Inn and Conference Center. February 15, 2006

UM Engineers Offer Long-Term Relief for Heating and Cooling Costs
The result could be dramatic savings for consumers as early as 12 months from now. January 15, 2006

Radermacher Guest Lecturer at Shanghai Jiao Tong University Conference
International Academic Conference of Research in Air Conditioning & Refrigeration held on April 13. May 15, 2005

ASHRAE Bestows Exceptional Service Award to Radermacher
The Department extends a heartfelt congratulations to Professor Radermacher. May 15, 2005

CHP Paper Earns ASME AESD Best Student Paper Award
The award is to be presented at the ASME International Mechanical Engineering Congress and RD&D Expo AESD luncheon in November 2004. September 15, 2004

Design Teams Win Sustainable Technology Welcome Center Competition
Team Winners Include ME Faculty and Graduate Students. June 15, 2004

UNITED STATES DEPARTMENT OF ENERGY SELECTS UMD AS REGION'S NEW ENERGY CENTER
The University will receive funding for the Center through the Maryland Energy Administration (MEA). September 15, 2003

Asst. Secretary for Energy David Garman Visits CEEE
On May 9, 2003, Assistant Secretary for Energy David Garman visited the CEEE to tour the Chesapeake Building. May 9, 2003

Profs. Balachandran and Sandborn Winners of OTC Invention of the Year Competition
Professors Balakumar Balachandran and Peter Sandborn were the winners of two of the three (OTC) Invention of the Year Awards. April 15, 2003

ASME Meeting Participants Tour Chesapeake Building
Tour was held on Wednesday, February 12, 2003. February 15, 2003

Radermacher Hall of Fame Plaque Unveiled
Dr. Radermacher was inducted into the Innovation Hall of Fame for his innovation in the design of refrigeration systems and technology. May 6, 2002

ASHRAE to Bestow Honors on 2 ME Faculty
American Society of Heating, Refrigeration and Air Conditioning Engineers will bestow honors and awards on Reinhard Radermacher and Arthur Bergles. May 2, 2002

Making the Switch to On-Site Electricity
Technology: With distributed generation, companies can avoid power interruptions and volatile energy prices. March 24, 2002

Declare Fuel Independence: Increase Mileage Standards
We need to face it: We depend on foreign oil. March 12, 2002

British Parliament Members Visit the CHP Integration Test Center
On January 30, 2002 several members of the British Parliament were in Washington, DC, for a Summit on Climate Change and Renewable Energy. February 15, 2002

First of 28 Chinese Engineers Receive Training with CEEE
The first seven from a group of 28 engineers have arrived to work with Professor Reinhard Radermacher and CEEE. November 9, 2001

Professor Reinhard Radermacher Inducted into Clark School of Engineering Innovation Hall of Fame
Dr. Radermacher has been inducted into the Innovation Hall of Fame for his innovation in the design of refrigeration systems and technology. May 23, 2001