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Title: The viscosity of nitrogen-ammonia system under pressures
Authors: Hongo, Masaru
Iwasaki, Hiroji
Issue Date: 25-Dec-1977
Publisher: The Physico-Chemical Society of Japan
Journal title: The Review of Physical Chemistry of Japan
Volume: 47
Issue: 2
Start page: 90
End page: 101
Abstract: The viscosities of nitrogen, ammonia and their mixtures have been measured by the use of an improved oscillating disk type viscometer at the temperatures of 25, 50, 75 and 100℃, and in the pressure range, up to about 120×10^5 Pa for nitrogen and up to around the saturated vapor pressure of ammonia for both ammonia and nitrogenammonia gaseous mixtures. The accuracy of the measurements is estimated to be within ±0.3%. The initial pressure (density) dependence of the viscosity of ammonia and nitrogenammonia mixtures, that is, η_0^-1(∂η/∂P)_P→0 (or η_0^-1(∂η/∂p)_p→0) where η is the viscosity of gases, η_0 is the viscosity extrapolated to zero pressure (or density), P is pressure and p is density, changes its sign from negative to positive with an increase in not only temperature but also the mole fraction of nitrogen.
Appears in Collections:Vol.47 No.2

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