Development of working fluid thermodynamic properties information for geothermal cycles. Phase I. Annual report, September 1, 1976-December 31, 1977
During the first year (Phase I) of this research program, the following elements of research have been performed: (1) the collection and processing of data for pure components, (2) the evaluation of the generalized MBWR equation of state for halocarbon saturated thermodynamic properties, (3) the determination of pure component parameters for the MBWR equation for ten halocarbons, isobutane and, over a limited range, for ammonia and water, (4) the investigation of modifications of the MBWR equation for improved prediction of properties of hydrogen bonding and polar fluids. With the results of the present work, MBWR parameters have now been determined for twenty-seven pure fluids, making the use of the MBWR equation in geothermal cycle calculations feasible for most candidate working fluids. From this research, it has been concluded that the MBWR equation can be used to correlate the thermodynamic properties of many of the hydrocarbons and halocarbons which are presently potential candidate working fluids for geothermal binary cycles. However, for ammonia and water, the MBWR equation cannot accurately describe behavior in the complete range of fluid states. In anticipation of future needs to describe complex fluids (such as fluorinol-water mixtures) which have been proposed as working fluids, efforts have been initiated to develop an equation of state capable of describing the behavior of hydrogen bonding and polar as well as nonpolar fluids.
- Research Organization:
- Oklahoma Univ., Norman (USA). School of Chemical Engineering and Materials Science
- OSTI ID:
- 5557148
- Report Number(s):
- ORO-5249-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150802* -- Geothermal Power Plants-- Power Plant Systems & Components
2-METHYLPROPANE
ALKANES
AMMONIA
BINARY-FLUID SYSTEMS
CONVERSION
ENERGY CONVERSION
EQUATIONS
EQUATIONS OF STATE
FLUIDS
GEOTHERMAL ENERGY CONVERSION
Geothermal Legacy
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
WATER
WORKING FLUIDS