Viscosity measurements of liquid toluene at low temperatures using a dual vibra...

• Autor(es): Oliveira, Carla Padrel de ; Caetano, Fernando J. P. ; Mata, José L. Correia da ; Fareleira, João M. N. A. ; Wakeham, William A.
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/10400.2/2077
• Origem: Repositório Aberto da Universidade Aberta
• Assunto(s): Dual vibrating-wire technique; Low temperature; Toluene; Viscosity
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

A recently developed dual vibrating-wire technique has been used to perform viscosity measurements of liquid toluene in the temperature range 213 K ≤ T ≤ 298 K, and at pressures up to approximately 20 MPa. The results were obtained by operating the vibrating-wire sensor in both forced and free decay modes. The estimated precision of the viscosity measurements, in either mode of operation, is ±0.5%, for temperatures above or equal to 273 K, increasing with decreasing temperature up to ±1% at 213 K. The corresponding overall uncertainty is estimated to be within ±1% and ±1.5%, respectively.