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Development of novel air distributor for precise control of cooling capacity delivery in multi-compartment indirect cooling household refrigerators.

Author(s) : LI Z., DING G., MIAO S., HAN X.

Type of article: IJR article

Summary

Multi-compartment indirect cooling household refrigerators (MIRs) have the advantage of multiple compartments with various storage temperatures, e.g. a freezing compartment (FC), a refrigerating compartment (RC) and a variable temperature compartment (VC). MIRs have difficulty in precise control of the temperatures of all compartments because they fail to independently deliver cooling capacities to each compartment. This paper presents a method to independently deliver cooling capacities by installing a novel air distributor in a MIR and changing the position of air supply dampers in this air distributor. The design method for the geometries of the novel air distributor, including the size and the opening angle of the damper as well as the size of the air openings, is detailed illustrated. To validate the proposed method, the novel air distributor was installed in a typical MIR, and the temperatures of all compartments of the MIR before and after the installation of the novel air distributor were measured and compared. It is found that the dynamic fluctuations of the temperatures of the FC in the MIR without the novel air distributor excess the preset range at the working conditions of only the RC or the VC need to be cooled, while those of the MIR with the novel air distributor are within the preset range at all working conditions. These results confirm the effectiveness of the proposed control method for precise temperature control.

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Pages: 175-183

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Details

  • Original title: Development of novel air distributor for precise control of cooling capacity delivery in multi-compartment indirect cooling household refrigerators.
  • Record ID : 30027789
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 119
  • Publication date: 2020/11
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.07.028
  • Document available for consultation in the library of the IIR headquarters only.

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