Share

IIR document

Absolute density measurements of hydrocarbon refrigerants by the dual-sinker magnetic levitation densimeter.

Author(s) : KAYUKAWA Y., KANO Y., FUJII K.

Summary

Currently most precise densimeter with magnetic levitation has limit of accuracy due to a magnetic force-transmission loss, by about 100 ppm of density. In this report, the authors present their new PVT property measurement system with originally developed magnetic levitation densimeter (MLD). They have proposed an improved method to eliminate the uncertainty caused by magnetic force working on diamagnetic fluid, by introducing dual sinkers and controlling their levitation height of the magnetic coupling. This technique can almost eliminate the force transmission error. The authors have constructed a new MLD with prescribed advantage, by designing a novel weight-exchange mechanism with a magnetic coupling. The experimental range is up to 345 K for temperature, 5 MPa for pressure, respectively. The experimental results with less uncertainty are compared with available equations of state for hydrocarbon refrigerants in order to evaluate their PVT property reproducibility.

Available documents

Format PDF

Pages: 2008-2

Available

  • Public price

    20 €

  • Member price*

    Free

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

Details

  • Original title: Absolute density measurements of hydrocarbon refrigerants by the dual-sinker magnetic levitation densimeter.
  • Record ID : 2010-1777
  • Languages: English
  • Source: 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
  • Publication date: 2008/09/07

Links


See other articles from the proceedings (132)
See the conference proceedings

Indexing