Share

Development of a scroll expander for the CO2 refrigeration cycle.

Number: pap. NS15

Author(s) : NAGATA H., KAKUDA M., SEKIYA S., et al.

Summary

In this study, a scroll expander was developed to recover the throttling loss in CO2 cycles. In cycles with an intercooler, the expander drives directly the second-stage compressor using the energy recovered from the expansion process. To carry out this function, a back-to-back scroll mechanism was applied to the expansion and sub-compression processes. A prototype of the expander/sub-compressor was designed by calculating the gas pressure in the chambers and estimating the gas forces. The prototype was built and tested. According to the experimental results of the prototype device, the sub-compressor increased the pressure by 1.30 MPa, while the pressure drop between the inlet and outlet of the expander was 3.19 MPa. Based on the gas state at the expander inlet, the volumetric efficiency was about 104%.

Available documents

Format PDF

Pages: 8 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Development of a scroll expander for the CO2 refrigeration cycle.
  • Record ID : 30000530
  • Languages: English
  • Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Publication date: 2010/02/17

Links


See other articles from the proceedings (75)
See the conference proceedings

Indexing