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Preparation of Psychrometric Charts for Alcohol Vapours in Nitrogen
Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
d.shallcross@chemeng.unimelb.edu.au
Korean Journal of Chemical Engineering, January 2000, 17(1), 93-100(8), 10.1007/BF02789260
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Abstract
Psychrometric charts for three different systems involving condensing alcohol vapour in nitrogen are presented. The alcohols considered are methanol, ethanol and n-propanol. The charts are based upon semi-theoretical equations and make ust of published physical property data and correlations. The behaviour of the vapour phase is characterised by the Virial Equation of State truncated at the third term. The solubility of nitrogen in the liquid alcohols is also considered. the charts are constructed with the dry bulb temperature and absolute humidity scales as the orthogonal axes. Curves of constant adiabatic saturation temperature, constant relative humidity, constant gas specific volume and constant enthalpy deviation are plotted on the charts.
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References
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Battino R, "Solubility Data Series-Volume 10-Nitrogen and Air," Pergamon Press, Oxford (1982)
Brugge HB, Yurttas L, Holste JC, Hall KR, Fluid Phase Equilib., 51, 187 (1989)
ESDU, "Heat Capacity and Enthalpy of Liquids: II: Halogenated Methanes," Engineering Sciences Data Unit International, London, Item Number 79028 (1979)
ESDU, "Heat Capacity and Enthalpy of Liquids: Aliphatic Ketones," Engineering Sciences Data Unit International, London, Item Number 81030 (1981)
ESDU, "Orthobaric Densities and Molar Volumes of Liquids: Alcohol," Engineering Sciences Data Unit International, London, Item Number 89037 (1989)
ESDU, "Vapour Pressure and Critical Points of Liquids: Part 1 A: C1 to C7 Alkanes," Engineering Sciences Data Unit International, London, Item Number 84022 (1984)
Hyland RW, Wexler A, ASHRAE Transactions, 89(2A), 520 (1983)
Kehianian HV, "Virial Coefficients of Selected Gases," in "CRC Handbook of Chemistry and Physics," 77th edn (ed D.R. Lide), CRC Press, Boca Racon, Florida, 6-27-6-46 (1996)
McGowan JC, "Isothermal Compressibility of Liquids," in "CRC Handbook of Chemistry and Physics," 60th edn (eds R.C. Weast and M.J. Astle), CRC Press, Boca Raton, Florida, F-16-F-20 (1980)
Pitzer KS, Fluid Phase Equilib., 59, 109 (1990)
Orbey H, Vera JH, Am. Inst. Chem. Eng. J., 29(1), 107 (1983)
Reid RC, Prausnitz JM, Sherwood TK, "The Properties of Gases and Liquids," 3rd edn, McGraw-Hill Book Company, New York (1977)
Shallcross DC, Low SL, Chem. Eng. Res. Des., 72(6), 763 (1994)
Shallcross DC, "Handbook of Psychrometric Charts," Chapman and Hall, London (1997)
Shallcross DC, Calphad, 20(3), 283 (1996)
