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Viscosity measurements of R32, R134A and R1234ze(Z).
Number: pap. n. 476
Author(s) : MATSUGUCHI A., KAGAWA N.
Summary
A compact torsionally oscillating crystal viscometer was used to measure viscosity coefficients of R 32, R 134a and R 1234ze(Z). To derive viscosity coefficients, resonance frequencies and bandwidths of the crystal were automatically measured with a developed measuring system and its software. Viscosity data of R 32, R 134a and R 1234ze(Z) were measured at temperatures ranging from 303 to 450 K at pressures up to 20 MPa in their liquid regions. The uncertainty of the measurements was estimated to be about 5 %. The experimental data of R 134a were compared with calculated data from a correlation.
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Details
- Original title: Viscosity measurements of R32, R134A and R1234ze(Z).
- Record ID : 30015916
- Languages: English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Publication date: 2015/08/16
- DOI: http://dx.doi.org/10.18462/iir.icr.2015.0476
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Indexing
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Themes:
Thermodynamic measurements;
HFCs - Keywords: Viscosity; R134a; Measurement; R32; R1234ze; Refrigerant
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