- Author
- Maczek, K. | Muller, J. | Wojtas, K. | Domanski, P. A.
- Title
- Ternary Zeotropic Mixture With CO2 Component for R-22 Heat Pump Application.
- Coporate
- Technical University of Cracow, Krakow, Poland National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- CLIMA 2000 Conference, Proceedings. August 30-September 2, 1997, Brussels, Belgium, 1-9 p., 1997
- Keywords
- zeotropic mixture | alternative refrigerants | heat pumps | carbon dioxide
- Abstract
- The objective of this research project was to demonstrate a successful operation of a high efficiency heat pump employing a zeotropic mixture with a zero ozone-depletion and a small greenhouse warming potential (ODP and GWP, respectively). The project addresses the technical challenges resulting from international agreements regulating the use of ozone-depleting substances. The signatory countries of the Montreal Protocol agreed to phase out production of chlorine-containing refrigerants with deadlines depending on the ODP of the fluids. A search for a proper substitute has to consider factors such as capacity, efficiency, flammability, oil/refrigerant solubility, toxicity, etd. This study investigaged possible R-22 alternatives with the goal of achieving a comparable system capacity and 10% improvement in Coefficient of Performance (COP). The tests were performed in COCH (Refrigerating Machinery Research Center in Cracow, Poland).