R718 - Water as Refrigerant Projects:
      



Professor Müller working on a R718 Prototype Unit (1994)
 

 
R718 Publications:
  *   Kilicarslan A.,, Müller, N. 
A Comparative study of water as a refrigerant with some current refrigerants
International Journal of Energy Research, 2005, Vol. 29, p 947-959.
 
  *   Kharazi, A. A., Akbari, P., Müller, N. 
Preliminary Study of a Novel R718 Compression Refrigeration Cycle Using a 3-Port Condensing Wave Rotor
ASME Journal of Engineering for Gas Turbines and Power, July, 2005,
Vol. 127, p 539-544..
 
  *   Akbari, P., Müller, N. 
Wave Rotor Research Program at Michigan State University
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, AIAA Paper 2005-3844, USA, Jul 2005.
  *   Akbari, P., Nalim, M. R., Müller, N. 
A Review of Wave Rotor Technology and its Applications
2004 I
nternational Mechanical Engineering Conference, ASME Paper IMECE2004-60082,
USA, Nov 2004.
  *   Kharazi, A., Akbari, P., Müller, N. 
Performance Benefits of R718 Turbo-Compression Cycles Using a 3-Port Condensing Wave Rotors
2004 International Mechanical Engineering Conference, ASME Paper IMECE2004- 60992,
USA, Nov 2004.
  *    Kharazi, A., Akbari, P., Müller, N. 
An Application of Wave Rotor Technology for Performance Enhancement of R718 Refrigeration Cycles
2nd International Energy Conversion Engineering Conference, AIAA Paper 2004-5636,
USA, Aug 2004.
 
  *   Kilicarslin, A., Müller, N. 
"
COPs of R718 in Comparission with Other Modern Refrigerants"
1st Cappadocia International Mechanical Engineering Symposium, Cappadocia, Turkey, July 2004.
 

  *   Kharazi, A., Akbari, P., Müller, N.
Preliminary Study of a Novel R718 Turbo-Compression Cycle Using a 3-Port Condensing Wave Rotor
2004 International ASME Turbo Exposition
, ASME Paper GT2004-53622, Austria, Jun 2004.

  *   Akbari, P., Kharazi, A., Müller, N.
Utilizing Wave Rotor Technology to Enhance the Turbo-Compression in Power and Refrigeration Cycles
2003 International Mechanical Engineering Conference, ASME Paper IMECE2003-44222, U.S.A., Nov 2003.

 
  *   Müller N. (2002)
Turbo Chillers using Water as a Refrigerant
ASME Process Industry Division PID Newsletter, Fall 2002, p 3.  
 
  *   Müller N. (2001)
Ein schneller Algorithmus für Entwurf und Berechnung von Laufrädern mit Radialfaserschaufeln"
(A fast algorithm for design and flow calculation of radial-line impellers)
in Klingenberg J., Heller W.: Beiträge zur Strömungsmechanik, TU Dresden, p235-244.  
  *   Müller N. (2001)
Design of compressor impellers for water as a refrigerant”
ASHRAE Annual Meeting, June 23-27, 2001, Cincinnati.  
 
  *   Müller N. (2001)
Design of compressor impellers for water as a refrigerant
ASHRAE Transaction Vol. 107, p214-222.  
 
  *   Müller N. (2001)
A Quick Design Method for Radial line Blading”
ASME International Joint Power Generation
Conference & Exposition, June 4-7, 2001, New Orleans.  
  *   Müller N. (1999)
“Entwurf von Laufrädern mit Radialfaserschaufeln für Diagonalverdichter mit getrennt angetriebenen Vorläufer und Hauptläufer (
Design of mixed-flow compressors with separately driven pre- and main runner with radial-line blading)
Dissertation, TU Dresden.  
  *   Albring P. et al. (1998)
“Grundlagenuntersuchungen energierationeller Kreisprozesse mit Wasser als Kältemittel und Erprobung einer Versuchs-Großanlage

(Fundamental
investigations of energy efficient cycles with water as a refrigerant and test of a full-size test unit)
Abschlußbericht zum BMBF-Forschungsvorhaben 0326921A.  
 
  *   Müller N. (1998)
“Optimierung der Entwurfsparameter eines Systems Vorläufer-Hauptläufer für maximale Arbeitsübertragung im Diagonalverdichter
(Optimizing the design parameters of separately driven inducer and main wheel of a mixed-flow compressor for maximized work transmission).
Fluid Engineering Conference at Technische Universität Dresden, 9 October 1998.  
  *   Albring P. et al. (1997)
“Direktentspannungsverdampfer
(Direct expansion evaporator)
Deutsche Gebrauchsmusteranmeldung
(German Patented Design Application) Reg.-Nr. 297 14 566.5.
 
  *   Albring P. et al. (1996)
“Turboverdichter-Laufrad
(Turbo-compressor wheel)
Deutsche Patentanmeldung
(German Patent Application) Reg.-Nr. 196 34 043.8.  
  *   Albring P., Müller N.(1995)
“Mehrfachlaufrad für Turboverdichter
(Multiple turbo-compressor rotor)
Deutsche Patentanmeldung (
German Patent Application) Reg.-Nr. 195 43 181.2.
  *   Albring P., Müller N. (1995)
“Turboverdichter für Wasser als Kältemittel
(Turbo-compressors for water as a refrigerant)
in Faragallah, W., Surek, D.: Beiträge zu Fluidenergiemaschinen Band 2, S. 16-22, Sulzbach.  
 
  *   Albring P. et al. (1994)
“Kältemittel-Turboverdichter
(Refrigerant turbo-compressor)
European Patent Registration Reg.-No. 94108502.9.  
 
  *   Albring P. et al. (1994)
Turbo-compressor impeller for coolant”
United States Patent No. 5,464,325.
 
  *   Albring P. et al. (1993)
Radiallaufrad” (Radial-Flow Impeller)
Deutsche Patentschrift (German Patent) DE 43 21 173 C2.


Links:

    R718 Chillers 20% more energy efficient

    Operational R718-Chiller at Universität Essen in Germany

    Operational R718-Chillers at DaimlerChrysler in Düsseldorf, Germany 

    R718-Chillers 600kW-1MW (Technologie Transfer Zentrum – ILK Dresden) 

    R718 Competence of ILK Dresden, Germany

    VW Auto-gramm: Volkswagen Pioneers Successful in Operating 2 Modern 1MW-R718 Chillers

    More About the Volkswagen "Transparent Manufactory" in Dresden and the Operational R718 Chillers

    Specifications of R718 chillers by ILK Dresden:

            Technical Information

            Technical Specifications
 

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