TY - DATA T1 - Viscosity measurements of R32, R134A and R1234ze(Z). AU - MATSUGUCHI, A. AU - KAGAWA, N. DO - 10.18462/IIR.ICR.2015.0476 UR - http://www.iifiir.org/clientBookline/service/reference.asp?INSTANCE=EXPLOITATION&OUTPUT=PORTAL&DOCID=IFD_REFDOC_0015916&DOCBASE=IFD_REFDOC&SETLANGUAGE=FR AB - 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. KW - MEASUREMENT KW - R1234ze KW - R134a KW - R32 KW - VISCOSITY KW - REFRIGERANT PY - 2015 PB - International Institute of Refrigeration (IIR) LA - en ER -