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NIST/ASME Thermophysical Properties of Water Database. Water/Steam Ubiquitous in industry and science as solvent, calibration fluid, thermal transport fluid, working fluid in evaporative/condensation cycles, hydrological cycles, etc.
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NIST/ASME Thermophysical Properties of Water Database • Water/Steam • Ubiquitous in industry and science as solvent, calibration fluid, thermal transport fluid, working fluid in evaporative/condensation cycles, hydrological cycles, etc. • Improved representation of thermo-dynamic properties, especially in critical region and for supercooled liquid; based on ITS-90 • New formulation for thermodynamic properties adopted; NIST to provide U.S. implementation of new standard • revision and replacement of old STEAM tables • Designed for easy incorporation into other software • distribution agreement with Aspen Technology, Inc. “Combined-Cycle” Power Plant Mojave Desert, California
Structure and Dynamics of Silica Gels • Sol-gel technology can produce • ceramics at low temperatures • high-purity materials with unique compositions and properties (e.g., superconductors, insulators) • glasses of designed porosity • containers for special purposes (e.g., nuclear and chemical waste storage) • Advances in industrial & scientific applications require basic understanding of structure and dynamics of high-density silica gels • performed Small Angle Neutron Scattering to probe the gel structure and aggregation process on nanometer scale • observed temporal self-similarity; used dynamic self-scaling relationship to improve model of aggregating system