NIST Thermophysical Properties of Hydrocarbon Mixtures Database, SUPERTRAPP, SRD 4, Version 1.04 (Natl. NIST Mixture Property Program, NIST14, Version 9.08 (Natl. Steam, Release on Thermal Conductivity of Water Substance (1975). Kell, NBS/NRC Stram Tables (Hemisphere, New York, 1984). NIST Thermophysical Properties of Water Database, SRD 10 (Nat]. NIST Thermophysical Properties of Pure Fluids Database, NIST12, Version 3.0 (Natl. Gallagher, in Computereed Thermophysical Property Packages, HTD-Vol. We also discuss our current research to improve the standards for air and for aqueous systems including the binary mixture of ammonia and water.ĭ. The databases include both thermodynamic surfaces and representations for transport properties over broad ranges of temperature. The databases provide national standards for the properties of pure fluids, an accurate evaluated mixture program focusing on the properties of natural gas mixtures, a predictive package emphasizing hydrocarbon systems up to C 20, database for refrigerant and prospective alternative refrigerant fluids, and the current scientific thermophysical property surfaces for pure water and steam. In this paper we discuss five computerized databases distributed by the Standard Reference Data (SRD) Program of NIST. The National Institute of Standards and Technology (NIST) has a primary function to develop and disseminate standard reference data for the thermophysical properties of fluids and fluid mixtures of interest to the industrial and scientific communities.
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