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- W3029007893 abstract "This paper presents a rotary vane expander which is used in the transcritical CO2 refrigeration system to replace the throttling valve for the COP improvement. The internal leakage has been focused on by mathematical model and experiment study. In the mathematical model, the forces acted on the vane have been calculated to estimate whether the vane will fly out to the cylinder and contact with the surface tightly or not. The calculated result shows that the friction force between the vane and the vane slot will forbid the vane to contact with the cylinder surface all the time, when there is no extra force acted on the bottom of the vane, and some springs can help to solve this problem. A test rig has been set up to verify the modelling result. In the prototype, four pressure sensors have been placed to record the pressure-time (p-t) diagrams to indicate the working process of the expander and analysis the internal leakage. After adding springs in the vane, the rotary vane type expander can start easily and work stably in the CO2 transcritical refrigeration cycle." @default.
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- W3029007893 date "2007-08-21" @default.
- W3029007893 modified "2023-09-23" @default.
- W3029007893 title "Mathematical modelling and experimental investigation of the vane motion of a rotary vane expander in a CO2 heat pump system." @default.
- W3029007893 hasPublicationYear "2007" @default.
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