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Study on application of tube-in-tube condenser for auto-cascade refrigeration.

[In Chinese. / En chinois.]

Author(s) : RUI S., ZHANG H., WANG H., et al.

Type of article: Article

Summary

Auto-cascade refrigeration system is widely used to obtain low temperature environment between - 40°C & -150°C. Tube in-
tube condenser is commonly used for condensing equipment in auto-cascade refrigeration system, and its characteristics and structure affect the performance of refrigeration equipment deeply. An auto-cascade refrigeration system with tube-in-tube condenser was taken as the research object, and the condensing process characteristics and structure dimension were studied. At the condensing pressure of 2.0 MPa, the condensing load was 1610 W when the mass fraction ratio of R600a and R23 was 7: 3. The structure size of double-pipe condenser was calculated as 4, 842 m based on the heat transfer coefficient of mixed refrigerant and cooling water. At the end of the paper the suction temperature, exhaust temperature, evaporation temperature in different condensing water flow, and inlet and outlet temperature of cooling water were analyzed.

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Pages: 13-18

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