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Experimental research and theoretical analysis on throttling characteristics of electronic expansion valve in series with capillary tubes.

Number: pap. 2426

Author(s) : LIANG X., FANG J., ZHEN B., et al.

Summary

The mass flow rate of R32 and volumetric flow rate of dry air in an electronic expansion valve (EEV), in two different capillary tubes (CTs) and in one expansion valve in series with two different capillary tubes were tested, and the theoretical volumetric flow rate of dry air in one EEV in series with different CTs were predicted through a theoretical throttling model built in this paper. The results showed that the mass flow rate of R32 or volumetric flow rate of dry air of the serial throttling component was lower than but close to that of the EEV in low openings and that of the CTs in full opening, respectively, when the operating conditions were comparable. The flow rate ratio of the serial throttling component to the EEV decreased significantly as the opening increased, and the flow rate ratio of the refrigerant was obviously lower than that of the dry air. The refrigerant mass flow rate of EEV in series with CT upstream was higher than that of the same EEV in series with the same CT downstream.

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Pages: 7 p.

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Details

  • Original title: Experimental research and theoretical analysis on throttling characteristics of electronic expansion valve in series with capillary tubes.
  • Record ID : 30018766
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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