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Development of newly-designed expander used in a CO2 transcritical system.

[In Chinese. / En chinois.]

Author(s) : JIANG Y., MA Y., LI M., et al.

Type of article: Article

Summary

Improving the efficiency of CO2 transcritical systems has been the subject of much research in the refrigeration technologies development. In this study, a new two-cylinder expander was designed and fabricated on the basis of the authors' previous single-cylinder rolling-piston expander. A CO2 transcritical water-water heat pump system was applied to test the efficiency of the expander presented. The test results show that the efficiency was 28-33% when the rotating speed of the expander ranged from 780 to 1100 r/min under the testing conditions.

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Pages: pp. 1-4

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