10.18462/IIR.ICR.2015.0476
MATSUGUCHI, A.
A.
MATSUGUCHI
KAGAWA, N.
N.
KAGAWA
Viscosity measurements of R32, R134A and R1234ze(Z).
International Institute of Refrigeration (IIR)
2015
Dataset
MEASUREMENT
R1234ze
R134a
R32
VISCOSITY
REFRIGERANT
2015
en
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.