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Physical Chemistry of Aqueous Systems: Meeting the Needs of Industry

ISBN 印刷: 978-1-56700-034-4

ISBN オンライン: 978-1-56700-445-8

NEW EQUATIONS OF SATURATION PRESSURE AND SATURATION TEMPERATURE OF ORDINARY WATER SUBSTANCE

要約

New equations of saturation pressure and temperature for water were correlated for industrial use based on the International Skeleton Tables(1985), IST-85. The precise equation of saturation pressure, Eq.(1), agrees with most vapor pressure data of IST-85 within 0.002 %. Computing time of this equation by a personal computer is about 1.5 times faster than that of the IFC Formulation for Industrial Use(1967), IFC-67. The fast equation for saturation pressure, Eq.(2), agrees with vapor pressure data of IST-85 within 0.02 % and within each tolerance of IST-85. The computing time of this fast equation is about 2.5 times faster than that of IFC-67. The quadratic equation, Eq.(3), was also fitted as a function of saturation pressure and temperature within each tolerance of IST-85, and its computing time is about 1.7 times faster than that of IFC-67 with respect to vapor pressure calculations. The equation of saturation temperature, Eq.(4), was also fitted within each tolerance of IST-85.
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