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Experimental study on NH3/CO2 cascade refrigeration system.

[In Chinese. / En chinois.]

Author(s) : WANG B., YU Z., JIANG S., et al.

Type of article: Article

Summary

An experiment on the performance of a cascade refrigeration system with NH3/CO2 was conducted and its performance was compared with that of a two-stage NH3 cycle or a single-stage NH3 cycle. The results show that the COP of the cascade system increases at first and then decreases with the increase in the CO2 condensing temperature. Moreover, the system COP increases with a decrease of the temperature difference in the evaporator-condenser or with an increase in CO2 evaporating temperature. In addition, the COP of the NH3/CO2 cascade cycle is greater than that of the two-stage NH3 cycle or the single-stage NH3 cycle at the lower evaporating temperatures.

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Pages: pp. 21-24

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