Ternary Zeotropic Mixture With CO2 Component for R-22 Heat Pump Application.
Ternary Zeotropic Mixture With CO2 Component for R-22
Heat Pump Application.
Maczek, K.; Muller, J.; Wojtas, K.; Domanski, P. A.
CLIMA 2000 Conference, Proceedings. August 30-September
2, 1997, Brussels, Belgium, 1-9 pp, 1997.
zeotropic mixture; alternative refrigerants; heat pumps;
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).