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 heat pumps, air-conditioners and refrigeration systems and integrated Cooling, Heating and Power (CHP) 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

  • Fellow ASHRAE,  TC 8.3 and 8.9, 1992-2019, held positions of Secretary, Vice Chair, and Chair, Chair of ASHRAE's Strategic Reserch Plan Adhoc Committee 2019-2021
  • IIR (International Institute of Refrigeration), Lifetime MemberPresident, Commission B2, 1999-2003
  • U.S. Representative to International Energy Agency, Annex XIII, 1986-1990, 
  • International Journal of Refrigeration, 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
  • Conference Co-Chairman, International Sorption Heat Pump Conference, New Orleans, 1994, Denver, 2005, College Park 2014

 

Vapor Compression Heat Pump, Refrigeration and Air-conditioning Systems, Software for the Design and Optimization of Thermal 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 Heat Pumps and Building Integration, Separate Sensible and Latent Cooling, Isothermal Compression, Compact air-to-refrigerant Heat Exchangers, Two-phase flow and heat transfer


Graduate and Undergraduate courses in energy conversion, renewable energy and heat pumping, air-conditioning and refrigeration

Recent Publications

  1. Eldeeb, R., Aute, V., Radermacher, R., Pillow plate heat exchanger weld shape optimization using approximation and parallel parameterized CFD and non-uniform rational B-splines, International Journal of Refrigeration 110, 121-131, February 1, 2020.
  2. Huang, Z., Ling, J., Bacellar, D., Hwang, Y., Aute, V., Radermacher, R., Airside thermal and hydraulic characteristics of compact bare tube heat exchanger under dry and wet conditions, International Journal of Refrigeration 110, 295-307, February 1, 2020.
  3. Qiao, Y., Cao, T., Muehlbauer, J., Hwang, Y., Radermacher, R., Experimental study of a personal cooling system integrated with phase change material, Applied Thermal Engineering 170, 115026, April 1, 2020.
  4. Huang, Z., Ling, J., Hwang, Y., Aute, V., Radermacher, R., Airside heat transfer and friction characteristics of a 0.8 mm diameter bare tube heat exchanger, Heat Transfer Engineering 41 (19-20), 1720-1730, November 12, 2020.
  5. Dhumane, R., Ling, J., Aute, V., Radermacher, R, Performance comparison of low GWP refrigerants for a miniature vapor compression system integrated with enhanced phase change material, Applied Thermal Engineering, Vol. 182, 116160, January 2021.
  6. Ling, J., Dalgo, D., Zhu, S., Qiao, Y., Wang, L., Aute, Srebric, J., Muehlbauer, J., Hwang, Y., Radermacher, R, Energy savings and thermal comfort evaluation of a novel personal conditioning device, Energy and Buildings, Vol. 241, 110917, June 15, 2021.
  7. Dhumane, R., Qiu, T., Ling, J., Aute, V., Hwang, Y., Radermacher, R., Kirkwood, A.C., Esformes, J., Investigation of the Variability in the Measurement of Cyclic Degradation Coefficient of Air Conditioning Systems, International Journal of Refrigeration, April 20, 2021.
  8. Suzukida, J., Bacellar, D., Radermacher, R., Home Retrofit Results In Net Positive Energy Operation, ASHRAE Journal, June 2021.
  9. Gao, L, Liu, T., Cao, T., Hwang, Y., Radermacher, R., Comparing deep learning models for multi-energy vectors prediction on multiple types of building, Applied Energy 301, 117486, 2021.
  10. Gao, L., Cao, T., Hwang, Y., Radermacher, R. Graph-based configuration optimization for S-CO2 power generation systems, Energy Conversion and Management 244, 114448, 2021.
  11. Wan, H., Cao, T., Hwang, Y., Radermacher, R., Chin, S., Comprehensive investigations on Life Cycle Climate Performance of unitary air-conditioners, International Journal of Refrigeration 129, 332-341, September 1, 2021.
  12. Gao, L., Tao, C., Hwang, Y., Radermacher, R., Robustness analysis in supercritical CO2 power generation system configuration optimization, Energy 242, March 1, 2022.
  13. Chen, D., Riaz, A., Aute, V., Radermacher, R., A solid-liquid model based on lattice Boltzmann method for phase change material melting with porous media in cylindrical heat exchangers, Applied Thermal Engineering, January 29, 2022.
  14. Qian, S., D. Catalini, J. Muehlbauer, B. Liu, H. Mevada, H. Hou, Y. Hwang, R. Radermacher, I. Takeuchi, High-performance multimode elastocaloric cooling system, Science. May 19, 2023; 380(6646):722-727. DOI:10.1126/science.adg7043.
  15. Baker, J., L. Cao, Y. Hwang*, C. Wang, and R. Radermacher, Performance investigation of an electrochemical ammonia compressor stack, Int. J. of Refrigeration, 153, 67-77, September 2023. https://doi.org/10.1016/j.ijrefrig.2023.05.020.

How Much Wood Could a Heat Pump Dry?

A CEEE paper makes the case for heat pumps as an eco-friendly alternative for drying loads of lumber throughout the world.

Jump Start Program Gives CEEE Grad Students a Boost

A new workshop helps research assistants get up to speed on the fundamentals of HVAC technologies.

UMD to Host International Graduate Engineering Course on Sustainability

The world goes to Maryland for a summer 2025 course on sustainable energy.

DOE Ups Its Investment in UMD to Develop Eco-Friendly Heat Pumps

Agency awards UMD and partners $4.8 million to improve heat pump performance and safety.

Maryland Engineering and Partners Win $26M to Develop Better HVACR Systems and Fight Climate Change

Clark School faculty and partners join prestigious U.S. National Science Foundation Engineering Research Center.

Elastocaloric Cooling Named One of the Top 10 Emerging Technologies to Address Global Challenges

UMD researchers are developing breakthrough cooling technology that is climate-friendly and efficient

UMD Staff Are the Students in a “Cool” New CEEE-Led Training

CEEE director trains UMD facilities management staff on air conditioning principles and applications

CEEE Researcher Named Finalist in UMD’s 3MT Competition

Het Mevada Wows Clark School Judges in “Three Minute Thesis” Contest

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.

CEEE: Three Decades of Innovation

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

Celebrating Two Decades of Partnership in Energy Education

Campus energy provider ENGIE concludes its 20th year of support for UMD engineering students.

Cremaschi Appointed Auburn's Director of Undergraduate Research

UMD mechanical engineering alum to create further opporturtunites for impactfrul student research.

UMD receives two new DOE Building Technologies awards

Takeuchi and Aute to lead projects 

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.

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.

Investing in Innovative Energy Technologies

2019 Energy Innovation Seed Grants awarded

Eight mechanical engineering students accepted to Future Faculty Program

The program prepares students to achieve career-long success in academia as educators and researchers.

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.

2018 ARPA-E Summit to Showcase UMD Innovations

UMD Energy Innovation Technologies dominate

Inaugural Energy Innovation Seed Grants awarded

$100K grants promote energy innovation technology

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.

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

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.

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

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

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 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.

Radermacher and Hwang Awarded New Patent

Mechanical Engineering professors awarded patent for advancements in air conditioning technology.

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.

Professor Reinhard Radermacher to Receive Distinguished International Service Award

Mechanical Engineering Professor honored for contributions to international institutional programs.

New Minta Martin Professors Named

Historic honor recognizes full professors who have made significant scholarly contributions.

Clark School Faculty Team Wins a UMD Invention of the Year Award

Their novel "natural timestamp" improves security and editing of audio, visual recordings.

Student Exchange Program Hosted by CEEE Expanding

Center of Environmental Energy Engineering has hosted a student exchange program for more than 25 years.

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.

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.

Eisele, Hwang, and Radermacher Win Best Technical Paper Award

SAE/IMechE Vehicle Thermal Managment Systems Conference Awards Best Technical Paper

Radermacher Leads Roadmapping Worskhop on Advanced Cooling Technologies for EPRI

Electric Power Research Institute turns to CEEE for assistance.

Engineering Students Take Part in Executive Time Management Seminar

Seminar focuses on fine tuning basic management skills

Abdullah A. Al-Abdulkarem Receives Honorable Mention for Poster

ME Student acknowledged by ASME for poster on enhanced oil recovery.

Eisele, Hwang, and Radermacher Win Best Technical Paper Award

CEEE professors and ME grad student have strong showing at VTMS 10 Conference.

Hwang Honored with ASHRAE's Distinguished Service Award

Dr. Yunho Hwang, CEEE Associate Director, to be recognized for his service contributions.

Visiting German Students Complete Engineering Undergraduate Requirements at UMD

Engineering interns from Mannheim, Germany enjoy UMD experience.

How Your Cell Phone Keeps Its Cool

For making today's electronics cooler--literally--Bar-Cohen wins Luikov Medal.

Hwang Appointed Associate Director of CEEE

Dr. Hwang will oversee day-to-day operations of the world renowned research facility.

Course brings students to South Korea

Five Maryland students, professor travel to Pusan National University for ENME 635

Energy Education and Research Collaboration Conducts First Workshop

Maryland faculty and Petroleum Institute review cooperation success of past year.

Can Your Building Pass an ‘Energy Audit’?

Energy Systems Engineering grad students perform energy conservation assessments on local buildings.

Mechanical Engineering Recognizes Faculty Accomplishments

Edward B. Magrab honored at reception recognizing distinguished service to campus and department.

Exchange Visitor Training Program Approaches 20th Year

Research exchange that began in CEEE now brings international flavor to Clark School.

ME Faculty Honored at Research Leaders Luncheon

Nine ME Faculty honored on November 14.

Radermacher Elevated to ASHRAE Fellow

Professor Reinhard Radermacher was recently elevated to the grade of Fellow of ASHRAE.

ME Faculty & Students Dominate Invention Awards

Co-Inventor Greg Jackson Winner in Physical Sciences Category

2006 ME Research Review Day Highlights

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

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.

Radermacher Guest Lecturer at Shanghai Jiao Tong University Conference

International Academic Conference of Research in Air Conditioning & Refrigeration held on April 13.

ASHRAE Bestows Exceptional Service Award to Radermacher

The Department extends a heartfelt congratulations to Professor Radermacher.

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.

Design Teams Win Sustainable Technology Welcome Center Competition

Team Winners Include ME Faculty and Graduate Students.

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).

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.

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.

ASME Meeting Participants Tour Chesapeake Building

Tour was held on Wednesday, February 12, 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.

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.

Making the Switch to On-Site Electricity

Technology: With distributed generation, companies can avoid power interruptions and volatile energy prices.

Declare Fuel Independence: Increase Mileage Standards

We need to face it: We depend on foreign oil.

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.

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.

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.

Other professional society fellows

American Society of Heating and Air-conditioning Engineers (ASHRAE)