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Title: Advanced design for scalable s-CO 2 turbomachinery systems

 [1];  [1]
  1. Mohawk Innovative Technology, Inc., Albanay, NY (United States)
Publication Date:
Research Org.:
Mohawk Innovative Technology, Inc., Albanay, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
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Report Number(s):
DOE Contract Number:
Type / Phase:
Resource Type:
Technical Report
Country of Publication:
United States
20 FOSSIL-FUELED POWER PLANTS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 42 ENGINEERING; 30 DIRECT ENERGY CONVERSION; Super Critical CO2; Turbomachinery; Oil-Free Bearings; Closed Brayton Cycle; Foil Bearings; Turbogenerator; High-Speed Turbomachinery; power generation

Citation Formats

Heshmat, Hooshang, and Cordova, Jose. Advanced design for scalable s-CO2 turbomachinery systems. United States: N. p., 2017. Web.
Heshmat, Hooshang, & Cordova, Jose. Advanced design for scalable s-CO2 turbomachinery systems. United States.
Heshmat, Hooshang, and Cordova, Jose. Sun . "Advanced design for scalable s-CO2 turbomachinery systems". United States. doi:.
title = {Advanced design for scalable s-CO2 turbomachinery systems},
author = {Heshmat, Hooshang and Cordova, Jose},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 26 00:00:00 EST 2017},
month = {Sun Feb 26 00:00:00 EST 2017}

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  • Sources of experimental and correlated thermodynamic data for the systems CO/sub 2/ + NH/sub 3/ + H/sub 2/O, CO/sub 2/ + H/sub 2/S + H/sub 2/O, H/sub 2/S + NH/sub 3/ + H/sub 2/O, and CO/sub 2/ + NH/sub 3/ + H/sub 2/S + H/sub 2/O are presented . The types of data in this bibliography include: all types of equilibrium data, both equilibria in solution and vapor-liquid equilibrium data; enthalpies; heat capacities; and densities. 215 references.
  • Six indirectly heated supercritical CO 2 (SCO 2 ) Brayton cycles with turbine inlet conditions of 1300°F and 4000 psia with varying plant capacities from 10MWe to 550MWe were analyzed. 550 MWe plant capacity directly heated SCO 2 Brayton cycles with turbine inlet conditions of 2500°F and 4000 psia were also analyzed. Turbomachinery configurations and conceptual designs for both indirectly and directly heated cycles were developed. Optimum turbomachinery and generator configurations were selected and the resulting analysis provides validation that the turbomachinery conceptual designs meet efficiency performance targets. Previously identified technology gaps were updated based on these conceptual designs. Materialmore » compatibility testing was conducted for materials typically used in turbomachinery housings, turbine disks and blades. Testing was completed for samples in unstressed and stressed conditions. All samples exposed to SCO 2 showed some oxidation, the extent of which varied considerably between the alloys tested. Examination of cross sections of the stressed samples found no evidence of cracking due to SCO 2 exposure.« less
  • Phase data on benzene-water systems in a graphical form are presented. Additional Russian data on dissociation of hydrogen sulfide and solubility of carbon dioxide in water at elevated temperatures and pressures were considered in the development of vapor-liquid equilibria for the NH/sub 3/-CO/sub 2/-H/sub 2/S-H/sub 2/O system. Available data on partial pressures of ammonia in the NH/sub 3/-H/sub 2/S-H/sub 2/O system are used to estimate the effect of the ionic ammonium hydrosulfide on the solubility of ammonia. Comparative properties are presented for coals produced by conventional and continuous mining. Occurrence of trace elements in coal is tabulated. Various properties ofmore » coal liquids are given along with data on the upgrading of coal liquids for use as power generation fuels. Sulfur reduction in coals from different regions accomplished by washing is given. Pulverization and storage characteristics of SRC are described. Trace elements disposition in a Lurgi coal gasification plant is reported. Conversion yields and product distributions achieved in coal pyrolysis are discussed. The design of air-distributor grids in fluidized-bed combustion is investigated. Yang's, Hinkle's, and a modified version of Konno and Saito's correlations for pressure-drop calculations in vertical lean-phase lift line are evaluated with available experimental data. The latter correlation is recommended as the preferred correlation. Gas-solids upflow in inclined pipes is discussed. Heat transfer correlations based on heat and momentum transport analogies and their applicability to slurry heat transport are discussed. Classification of slurries based on flow regimes is described. Critical deposit velocity and pressure-drop correlations for slurries are reviewed. Disposition of trace elements in coal combustion and their occurrence in water are described. A priority list for collection of pure component properties, prepared in consultation with the subcommittee members assigned for the task, is presented.« less
  • Vapor-liquid equilibria in the NH/sub 3/-CO/sub 2/-H/sub 2/S-H/sub 2/O system are discussed. Solubilities of various gases in hydrocarbon liquids are presented as a function of pressure along isotherms. Particle density and porosity of coals and chars are discussed, and the size consists of coal shipped from various mines are given. Pyrolysis of coal is reviewed, and the fate of trace elements in coal in conversion processes is discussed. Design charts are presented for gasification of char in a fluidized bed with steam and air at 1 atmosphere and temperatures of 1750, 1800, 1850, or 1900/sup 0/F, at various steam-to-carbon feedmore » ratios. Various approaches for evaluating solids mixing in fluidized beds are reviewed. Some of the published correlations for estimating initial bubble diameter are evaluated. Bed expansion correlations based on two-phase theory and various bubble-growth correlations are derived and evaluated by comparison with experimental data. Two-phase, fluid-particle systems are described in the form of a phase diagram. Various correlations for estimating choking velocity are evaluated, and a generalized correlation is recommended, which is applicable at both low (atmospheric) and high pressures. Pressure-drop correlations in vertical lean-phase solids transport are reviewed and data relevant to coal conversion processes are compiled. Federal environmental regulations, as well as those for Illinois and New Mexico, are discussed and various stack-gas cleaning processes are described. The experience with materials of construction for reactor internals and slurry pumps in the HYGAS pilot plant is described.« less