ISSN:
1572-9567
Keywords:
ethylene glycol
;
diethylene glycol
;
HFC-134x
;
polyethylene glycol(400)
;
polypropylene glycol(2000)
;
tetraethylene glycol
;
triethylene glycol
;
viscosity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The liquid viscosity of six binary mixtures of HFC-134a with glycols [ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol(400), and polypropylene glyco](2000)] was measured in the temperature range from 273 to 333 K. The viscosity was measured with an improved capillary viscometer instead of the rolling-ball viscometer reported in our previous work. The measurement uncertainty was estimated to be 1.6%. Most of the present data are higher than previous data, and the gap between the two sets of data increases further in low-viscosity regions. The present results obtained with laminar flow are more reliable than previous results, which are indefinite because of the limit of usefulness of the rolling-ball viscometer in low-viscosity regions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01439249
