Faculty Directory

Radermacher, Reinhard

Radermacher, Reinhard

Minta Martin Professor
Director, Center for Environmental Energy Engineering
Mechanical Engineering
Maryland Energy Innovation Institute
Center for Environmental Energy Engineering
4164A Glenn L. Martin Hall, Building 088
Website(s):

EDUCATION

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

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 500 publications, including 3 books, more than 200 invention records and 15 patents. He was a visiting scientist and NATO scholar at the National Institute of Standards and Technology before joining the University of Maryland.

HONORS AND AWARDS

  • 2015 J&E Hall Gold Medal, British institute of Refrigeration
  • 2015 Gustav Lorentzen Medal, International Institute of Refrigeration
  • 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

PROFESSIONAL MEMBERSHIPS

  • Director, Center for Environmental Energy Engineering (CEEE)
  • ASHRAE Member: TC 8.3 and 8.9, 1992-2019
  • 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-in-Chief (2002-2019) Science and Technology for the Built Environment, the 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, Lifetime Member
  • Conference Co-Chairman, International Sorption Heat Pump Conference, New Orleans, 1994, Denver, 2005, College Park 2014

 

Vapor Compression Air-conditioning Software for the Design and Optimization of Thermal Systems 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


2015

  • Al-Alili, Ali; Hwang, Yunho; Radermacher, Reinhard, Performance of a desiccant wheel cycle utilizing new zeolite material: Experimental investigation, ENERGY  Volume: 81   Pages: 137-145   Published: MAR 1 2015
  • Qiao, Hongtao; Aute, Vikrant; Radermacher, Reinhard, Transient modeling of a flash tank vapor injection heat pump system - Part I: Model development, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 49   Pages: 169-182   Published: JAN 2015
  • Qiao, Hongtao; Xu, Xing; Aute, Vikrant; Radermacher, Reinhard, Transient modeling of a flash tank vapor injection heat pump system - Part II: Simulation results and experimental validation, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 49   Pages: 183-194   Published: JAN 2015

2014

  • Li, Gang; Hwang, Yunho; Radermacher, Reinhard, Experimental investigation on energy and exergy performance of adsorption cold storage for space cooling application, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 44   Pages: 23-35   Published: AUG 2014
  • Al-Alili, Ali; Hwang, Yunho; Radermacher, Reinhard , A hybrid solar air conditioner: Experimental investigation, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 39   Special Issue: SI   Pages: 117-124   Published: MAR 2014
  • Huang, L; Lee, MS (Lee; Saleh, K; Aute, V; Radermacher, R, A computational fluid dynamics and effectiveness-NTU based co-simulation approach for flow mal-distribution analysis in microchannel heat exchanger headers, APPLIED THERMAL ENGINEERING  Volume: 65   Issue: 1-2   Pages: 447-457   Published: APR 2014

2013

  • Experimental investigation of energy and exergy performance of short term adsorption heat storage for residential application
  • Saleh, K; Abdelaziz, O; Ante, V ; Radermacher, R; Azarm, S, Approximation assisted optimization of headers for new generation of air-cooled heat exchangers, APPLIED THERMAL ENGINEERING  Volume: 61   Issue: 2   Special Issue: SI   Pages: 817-824   Published: NOV 3 2013
  • Lee, H; Hwang, Y; Radermacher, R; Chun, HH, Thermal and hydraulic performance of sinusoidal corrugated plate heat exchanger for low temperature lift heat pump, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 36   Issue: 3   Pages: 689-700   Published: MAY 2013
  • Xu, Xing; Hwang, Yunho; Radermacher, Reinhard, Performance comparison of R410A and R32 in vapor injection cycles, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 36   Issue: 3   Pages: 892-903   Published: MAY 2013
  • Li, G; Hwang, Y; Radermacher, R; Chun, HH, Review of cold storage materials for subzero applications, ENERGY  Volume: 51   Pages: 1-17   Published: MAR 1 2013
  • Gluesenkamp, Kyle; Hwang, Yunho; Radermacher, Reinhard, High efficiency micro trigeneration systems, APPLIED THERMAL ENGINEERING  Volume: 50   Issue: 2   Special Issue: SI   Pages: 1480-1486   Published: FEB 2013

2012

  • Li, Gang; Hwang, Yunho; Radermacher, Reinhard, Review of cold storage materials for air conditioning application, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 35   Issue: 8   Pages: 2053-2077   Published: DEC 2012
  • Lee, Hoseong; Saleh, Khaled; Hwang, Yunho; Radermacher, Reinhard, Optimization of novel heat exchanger design for the application to low temperature lift heat pump, ENERGY  Volume: 42   Issue: 1   Pages: 204-212   Published: JUN 2012
  • Al-Alili, A; Hwang, Y; Radermacher, R; Kubo, I, A high efficiency solar air conditioner using concentrating photovoltaic/thermal collectors, APPLIED ENERGY  Volume: 93   Special Issue: SI   Pages: 138-147   Published: MAY 2012
  • Al-Alili, A ; Islam, MD; Kubo, I; Hwang, Y; Radermacher, R, Modeling of a solar powered absorption cycle for Abu Dhabi, APPLIED ENERGY  Volume: 93   Special Issue: SI   Pages: 160-167   Published: MAY 2012

2011

  • Somers, C; Mortazavi, A ; Hwang, Y; Radermacher, R ; Rodgers, P; Al-Hashimi, S, Modeling water/lithium bromide absorption chillers in ASPEN Plus, APPLIED ENERGY  Volume: 88   Issue: 11   Pages: 4197-4205   Published: NOV 2011
  • Alabdulkarem, A; Mortazavi, A; Hwang, Y; Radermacher, R; Rogers, P; Optimization of propane pre-cooled mixed refrigerant LNG plant, APPLIED THERMAL ENGINEERING  Volume: 31   Issue: 6-7   Pages: 1091-1098   Published: MAY 2011
  • Xu, Xing; Hwang, Yunho; Radermacher, Reinhard, Refrigerant injection for heat pumping/air conditioning systems: Literature review and challenges discussions, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID  Volume: 34   Issue: 2   Pages: 402-415   Published: MAR 2011

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.

Elastocaloric Cooling System Co-Developed by CEEE Faculty Featured in Science

With the new technology, the materials remain in a solid state as compared to traditional refrigerants.

UMD ME Faculty Ranked in Top 2% of Scientists Worldwide

The department is home to some of the most widely-cited researchers in their fields.

Crank Up the AC, Not Global Warming

Maryland engineers advance heating and cooling technology to push for a greener future

CEEE Graduate Research Assistants Jangho Yang and Zhenyuan Mei Receive Engie Fellowships

The fellowship provides financial support to fund students' research and graduate assistant positions.

Materials, physics, and systems for multicaloric cooling

UMD’s Ichiro Takeuchi published in Nature Reviews Materials

Dr. Hwang Receives Achievement and Leadership Award  

Hwang was presented The Wilbur T. Pentzer Achievement and Leadership Award at the Herrick Conference at Purdue

CEEE: Three Decades of Innovation

The UMD-based center marked its 30th anniversary at a gala event on June 9.

Faculty Editorial: 30 Years of CEEE

by Dr. Reinhard Radermacher

CEEE Wins Best Session Paper Award for Experimental Methods at The 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT)

The paper is titled "Design Optimization and Experimental Validation of Heat Exchangers Utilizing High Performance, Non-round Tubes.”

CEEE Recognizes Senior Faculty Specialist Jan Muehlbauer for 15 Years of Exceptional Service

He was presented a plaque by Director Reinhard Radermacher in recognition of dedication to CEEE for 15 years.

Dr. Daniel Bacellar Promoted to Assistant Research Professor

Bacellar joined CEEE’s faculty in spring 2020 as a faculty research associate.

Director Editorial: Global vs Local Hazards

by CEEE Director Reinhard Radermacher

A Business up to 100 Times Bigger than that of ESCOs

Editorial by CEEE Director Dr. Reinhard Radermacher

Alumni Spotlight: Brian Ottens

What does solar system habitability research and mushroom farming have in common? Thermodynamics.

Dr. Jiazhen Ling Promoted to Associate Research Professor

Ling has been with CEEE since receiving his Ph.D. from UMD in 2011

Jan Muehlbauer Promoted to Senior Faculty Specialist

Muehlbauer has been with the University for 14 years since receiving his master's degree in 2006. 

UMD receives two new DOE Building Technologies awards

Takeuchi and Aute to lead projects 

Welcome Back, Dr. Daniel Bacellar!

“It’s good to be home - old family, new challenges!”

Failure is an Option

Alumni Profile: Cara Martin

Clark School Opens New Daikin Energy Innovation Laboratory

The Clark School formally opened the Daikin Energy Innovation Laboratory in honor of its more than 20-year partnership with global manufacturer Daikin.

Dr. Hwang and Dr. Aute Named New CEEE Co-Directors

They aim to expand CEEE's status as one of the leading Centers for HVAC&R Research in the world

Dr. Radermacher Named Operating Agent of IEA Annex 53

Annex 53 kicked off on Jan. 11 at the ASHRAE conference in Atlanta.

David Catalini Awarded Graduate Student Summer Research Fellowship

Plans to make significant strides in his research on elastocaloric cooling.

Kailkhura and Vathsavai Win Best Consortium Student Presentation Award, Spring 2019

Research sponsors voted theirs best out of 15 presentations.

RoCo Advances to Beta Test Before Public Launch

Roving comforter offers personal cooling and significant energy savings.

Lei Gao Admitted into the Future Faculty Program

Research topic is on micro-grid system optimization.

CEEE Researchers Win ASHRAE Best Paper Award

Chosen as best out of 107 papers published in 2017 in Science and Technology for the Built Environment.

Dr. Vikrant Aute Wins Provost’s Excellence Award for Professional Track Faculty

Recognized for his outstanding contributions in research.

Zhenning Li Wins Best Student Consortium Presentation Award

Research was on 'CoilDesigner Updates'.

2018 ARPA-E Summit to Showcase UMD Innovations

UMD Energy Innovation Technologies dominate

Mechanical Engineering at ASME IMECE Conference

Professor Radermacher was a plenary speaker and ME alumnus Ryan Kennett won Best Student Paper at this year’s conference.

Ransisi Huang wins best student consortium presentation award

'Steady State Modeling and LCCP of Vapor Compression Systems/VapCyc Updates' was the winning presentation.

Catalini and Leininger win 2017 GDF-Suez Chuck Edwards Memorial Fellowships

Fellowships of $25,000 each help fund the students’ research.

Researchers Introduce RoCo, a Mobile Personal Heating and Cooling Device

UMD Invention Has Potential to Cut Energy Costs in Residential and Large Building AC

Visiting German Researcher Investigates ground-coupled desiccant air conditioning system at CEEE

"There’s a lot of freedom at CEEE to pursue your passions", says Arne Speerforck.

UMD and Mobile Comfort demonstrate robotic cooling machine at 2017 ARPA-E Technology Showcase

UMERC is a multidisciplinary initiative dedicated to advancing the frontiers of energy science and technology.

Energy Sustainability Students Advises Small Town in Western Maryland on Becoming Grid Independent

The class projected that Friendsville could create its own energy and completely support itself for the majority of the year.

Ye Tao Wins Best Student Presentation Award for Fall CEEE Consortium Meeting

His paper, Electrochemical Compression, won amoungst strong competition.

Five Mechanical Engineering Graduate Students Selected for Clark School Future Faculty Program

Graduate students selected for program designed to produce next great engineering professors.

UMD has Largest University Showing at 2016 ARPA-E Summit

UMD researchers showcase transformative energy research at ARPA-E Energy Innovation Summit

The University of Maryland Receives $50,000 Grant from Dominion Foundation

Award supports new research on high efficiency solar-powered cooling systems.

UMD Startup To Solve Energy Conversion Challenges in Thermal Systems

Optimized Thermal Systems provides engineering consulting for HVAC&R systems.

UMD Teams Awarded Over $5 Million to Improve Power Plant Cooling Technologies

The U.S. Energy Department’s Advanced Research Projects Agency-Energy (ARPA-E) funds two UMD teams to improve power plant cooling efficiency.

Radermacher recognized as UMD's most prolific inventor

CEEE director presented with the campus Corporate Connector of the Year Award.

Suxin Qian Awarded Ann G. Wylie Dissertation Fellowship

Shape memory alloys provide cooling as well as heat-pumping.

Radermacher to Receive IIR Gustav Lorentzen Medal

The International Institute of Refrigeration recognizes Professor Reinhard Radermacher for his contributions to the field of refrigeration.

Radermacher Receives Institute of Refrigeration J&E Hall Gold Medal

Reinhard Radermacher recognized for pushing research frontiers in energy efficiency and environmentally sustainable thermal systems.

Saving Energy with ‘Personal HVAC Systems’

UMD awarded more than $5 million by ARPA-E to fund potentially transformational research.