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Basic study on application of magnetic nano-oil to scroll compressor – Measurement of friction and leakage.

Number: 1538

Author(s) : KIKUCHI T., MOTOZAWA M., FUKUTA M.

Summary

Since the improvement of efficiency of the refrigerant compressor for reducing energy consumption faces the limitation, the innovative technologies which is different from the existing technology, are strongly required. We propose the application of magnetic nano-oil, which is a dispersion of ferromagnetic nanoparticles stably dispersed in a refrigeration oil, to a refrigerant compressor for improvement of the efficiency. In this proposal, the magnetic nano-oil holds at only the sliding surface in the compressor by magnetic field, and it is expected that both friction on the sliding surface and leakage of refrigerant are reduced simultaneously in the refrigerant compressor. To conduct this feasibility study, both friction and leakage are evaluated by using the model test apparatus which is simulated the orbiting motion of a scroll compressor in this study. This model test apparatus can evaluate the gas leakage from the sliding surface and the frictional force at the sliding surface simultaneously or separately. Magnetic nano-oil is held at the sliding surface of the test piece by a neodymium magnet mounted in the test piece. Three kinds of model tests which are friction single test, leakage single test, and friction and leakage simultaneous test to investigate the influences of pressing force, rotational speed and upstream pressure on the gas leakage from the sliding surface and the friction at the sliding surface are examined. The results showed that the friction slightly decreased in the Stribeck curve by using the diluted the magnetic nano-oil comparing with the base oil in the friction single test. However, the remarkable difference in the friction and leakage between magnetic nano-oil and the base oil under the orbiting motion was not observed in the friction and leakage simultaneous test in this stage.

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  • Original title: Basic study on application of magnetic nano-oil to scroll compressor – Measurement of friction and leakage.
  • Record ID : 30030372
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Publication date: 2022/07/15

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