A5057786954- Phase Equilibria and Thermodynamics
- Thermodynamic properties of mixtures
- Chemical Thermodynamics and Molecular Structure
- Refrigeration and Air Conditioning Technologies
- Advanced materials and composites
- Fusion materials and technologies
- High-pressure geophysics and materials
- Nuclear Materials and Properties
- Molecular Spectroscopy and Structure
- Ionic liquids properties and applications
- Inorganic Fluorides and Related Compounds
- Spacecraft and Cryogenic Technologies
- Gas Dynamics and Kinetic Theory
- Scientific Measurement and Uncertainty Evaluation
- Rare-earth and actinide compounds
- Metal and Thin Film Mechanics
- Atmospheric Ozone and Climate
- Thin-Film Transistor Technologies
- High Entropy Alloys Studies
- Advanced Physical and Chemical Molecular Interactions
- Advanced Thermodynamic Systems and Engines
- Advanced Chemical Physics Studies
- High-Temperature Coating Behaviors
- Ferroelectric and Piezoelectric Materials
- Diamond and Carbon-based Materials Research
University of Lisbon
2001-2020
Instituto Superior Técnico
2005-2019
Instituto Politécnico de Lisboa
1994-2012
Rede de Química e Tecnologia
1987
Imperial College London
1983
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric Constant, Dielectric Virial Coefficients, and Dipole Moments of 1,1,1,2-TetrafluoroethaneTeresa Barao, Carlos A. Nieto de Castro, Umesh V. Mardolcar, Richard Okambawa, Jean M. St-ArnaudCite this: J. Chem. Eng. Data 1995, 40, 6, 1242–1248Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November...
Abstract This paper presents new measurements of the thermal conductivity liquid methane at 110, 125, 155 and 180 K pressures up to 10 MPa obtained with a transient hot wire equipment. The instrument is capable measuring fluids an accuracy ± 0.5% in all thermodynamic states far from critical region. — A reliable scheme for interpolation extrapolation presented. Values along saturation line were obtained, estimated better than 1%.
Relative permittivity measurements of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), and 1,1,1,3,3-pentafluorobutane (HFC-365mfc) in the liquid phase are reported. Measurements were performed by using a direct capacitance method at temperatures from 223 K to 303 pressures up 16 MPa for HFC-227ea HFC-236ea 263 HFC-365mfc. The uncertainty relative is estimated be better than ±1.1·10-2. theory developed Vedam et al., adapted Diguet, Kirkwood...
This paper gives an overview of our research, from experimental measurements the relative permittivity on new and alternative refrigerants, to theoretical interpretation data density functional self-consistent reaction field calculations for a series HFC molecules. Experimental were obtained as function temperature pressure Class B refrigerants-HCFC-123, HCFC-142b, HCFC-141b, A refrigerants-HFC-32, HFC-134a, HFC-152a, HFC-143a, HFC-227ea, HFC-245fa, HFC-365mfc some mixtures them:...
Abstract An analysis of the available data on viscosity and thermal conductivity coefficients alkali metal vapours is presented. The based upon theoretical calculations properties monatomic systems, described in preceeding parts I I.A present paper, making use kinetic theory a binary gas reacting mixture. A summary measurement techniques used, including, whenever possible, magnitude corrections performed raw nominal precision results, complements analysis. It concluded that it possible to...
This paper provides reliable dielectric property information on two refrigerant mixtures regarded as replacements for chorodifluoromethane (CAS no. 75-45-6) (HCFC22) and R502 (CHClF2 + CClF2CF3) (w1 = 0.49; w2 0.51). Liquid phase relative permittivity measurements are reported R408A (CHF2CF3 CF3CH3 CHClF2) (w1= 0.07; w2= 0.46; w3= 0.47) R409A CHClFCH3 CClF2CH3) 0.60; 0.25; w3 0.15). The were performed by using a direct capacitance method at temperatures from T (233 to 303) K under pressures...