Abstract
The ammonia-water system is described by the Extended UNIQUAC
model, which is an electrolyte model, formed by combining the
original UNIQUAC model, the Debye-Hückel law and the
Soave-Redlich-Kwong equation of state. The model is limited to
temperatures below the critical temperature of ammonia.
Vapor-liquid equilibria are described within the experimental
accuracy. The accuracy of enthalpy calculations is better than
±100 J mol-1, and heat capacity calculations deviate less than ±1%
from experimental data. The accurate description of the thermal
properties is achieved by taking speciation equilibria into
account. Model parameters valid in the temperature range 0 - 130°C
are given
Original language | English |
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Title of host publication | Hydrothermal Systems: Physics and Chemistry Meeting the Needs of Industry |
Place of Publication | Ottawa |
Publisher | NRC Press |
Publication date | 2000 |
Pages | 118-125 |
Publication status | Published - 2000 |
Event | 13th International Conference on the Properties of Water and Steam - Toronto, Canada Duration: 11 Sept 1999 → 17 Sept 1999 Conference number: 13 |
Conference
Conference | 13th International Conference on the Properties of Water and Steam |
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Number | 13 |
Country/Territory | Canada |
City | Toronto |
Period | 11/09/1999 → 17/09/1999 |