The Consortium for Alternative Cooling Technologies & Applications focuses on developing comprehensive information for the detailed physics of transport processes, new cost-effective test methods, and innovative components and system.

We have developed new map of the alternative cooling technologies and applications.  This map serves the purpose to provide comprehensive background information on current and alternative cooling and energy conversion technologies, providing the following benefits:

• Background information to assist in scouting for new ideas
• Updated information about the state-of-the-art of cooling technologies
• Latest CEEE research reports and presentations as they relate to the various topics
• Depository of CEEE ideas and intellectual properties for system improvements, component improvements and novel applications of existing and emerging technologies

All items listed in blue are those CEEE faculties and staffs are either actively conducting research or have experience in based on past research projects. All others were found to be noteworthy because of their potential, current interest by others or reflect ideas by CEEE faculties and staffs for future research projects. Comments, suggestions and questions are welcome and should be addressed to Reinhard Radermacher at raderm@umd.edu or Yunho Hwang at yhhwang@eng.umd.edu. The complete map is available to sponsors of the CEEE's "Alternatives Cooling Technologies, and Applications Consortium".

If you want to download the viewing software to review details of the alternative cooling technologies and application map, which is available from the members area, please click the following link.

 Download ACTA Map Viewing Software, here!

Current Projects: 

• Integration of Alternative cooling Technologies (Thermo-electric, Thermo-acoustic, Magneto-calorie, Stirling) into Conventional Applications. - Reinhard Radermacher
• Vapor Injection Cycle – XuDong Wang
• Low Temperature Heat Exchanger Performance Measurement – Jan Muehlbauer
• Next Generation Compact Heat Exchanger Development – Jan Muehlbauer
• Integrated Expander and Compressor - Jonathan Schoenfeld
• Refrigerant Distribution in Evaporator Manifold – Magnus Eisele
• Evaluation of VRV Systems- Tolga Aynur
• Separated Sensible and Latent Cooling - Jiazhen Ling
• Experimental Verification of CEEE Softwares – Abd ElAziz Omar
• Waste Heat Utilization– Cara Anderson
• Solar Cooling – Yunho Hwang

Past Research Areas & Projects: 

Heat Transfer & Analysis:

• Boiling HTC of NH₃ & CO₂ in smooth- & microfin-tubes
• Boiling and gas cooling HTCs of CO₂ in microchannel with & without oil
• TEWI analysis of automotive A/C
• LCCP of low and medium temperature commercial refrigeration systems
• Simulation of CO₂ automotive heat pump systems
• Oil circulation and oil distribution in vapor compression systems

Components & Sensor:

• Evaporatively cooled gas cooler
• Design of hermetic CO₂ compressors
• Dorin compressor life testing
• CO₂ flow visualization
• CO₂ expanders
• CO₂ leak detection
• Oil concentration sensors

System:

• R134a & CO₂ automotive A/Cs
• Dynamic performance measurement of automotive A/Cs
• CO₂ Army ECUs
• CO₂ water chiller and hot water heaters
• R32 mixtures (at high and low comp frequency) as alternative refrigerants
• Comparison of HCs and HFCs for low and medium temperature commercial refrigeration systems

For more information contact Prof. Yunho Hwang, 301-405-5247, yhhwang@umd.edu