...Bing Guo; Weixiao Tang Condensing flow induced vibration (CFIV) of the rotor blade is a tough problem for designers of nuclear turbines because nonequilibrium condensing flow excitation (NECFE) is hard to be directly modeled. Generally, in design, NECFE is assumed as equilibrium condensing flow...

... and CO 2 are produced and expelled as part of the exhaust gases. In an IBC, in order to reduce compression work, the exhaust gases are cooled before compression up to ambient pressure. If coolant with a low enough temperature is available, it is possible to condense some of the water out of the exhaust...

... deviates strongly from its base performance when subjected to wet gas flow. Power consumption typically increases, while efficiency drops with increased liquid content [ 1 ]. Shaft thrust loads are increased [ 2 ]. Wet gas also affects the surge and stall behavior of the compressor. Condensation...

... the power requirements, supercritical carbon dioxide compressors must operate near saturation where phase change effects are important. Nonequilibrium condensation can occur at the leading edge of the compressor, causing performance and stability issues. The characterization of the fluid at these conditions...

..., 2017; final manuscript received July 25, 2017; published online October 17, 2017. Editor: David Wisler. 01 06 2017 25 07 2017 Aerodynamics Computational Computational fluid dynamics Condensation Droplet Film Modeling Multiphase flows Phase change Turbines Turbulence...

... attention is paid to some of the key factors influencing the accuracy of thermal stresses prediction, specifically, the effect of “steam condensation” on thermal BC, the level of detailing for thermal zones definition, thermal contacts, and mesh quality in mechanical models. These aspects have been studied...

... manuscript received March 4, 2017; published online May 16, 2017. Assoc. Editor: Eric Petersen. 03 08 2016 04 03 2017 Aerodynamics Computational fluid dynamics Condensation Design optimization Turbines An industrial steam turbine (IST) is a power device widely used...

...Jörg Starzmann; Fiona R. Hughes; Alexander J. White; Marius Grübel; Damian M. Vogt Condensing nozzle flows have been used extensively to validate wet steam models. Many test cases are available in the literature, and in the past, a range of numerical studies have dealt with this challenging task...

... = saturation state v = vapor phase * = critical radius References [1] White , A. J. , Young , J. B. , and Walters , P. T. , 1996 , “ Experimental Validation of Condensing Flow Theory for a Stationary Cascade of Steam Turbine Blade ,” Philos. Trans. R. Soc...

...Lu Qiu; Rolf D. Reitz The phase equilibrium solver was used to examine if condensation is possible, given the thermodynamic conditions predicted by the CFD code. Simulations were first performed at the medium load conditions and condensation is seen in Figs. 3 and 4 . At −50 deg ATDC, several...

...C. Lettieri; D. Yang; Z. Spakovszky Even though the fluid attains super-cooled temperatures, T-T sat up to 36 K, the two-phase calculations show a negligible fraction of liquid CO 2 . This suggests that condensation does not occur. It can therefore be concluded that the computed mass fraction...

... prediction of subcooling, condensation, and wet steam flow in steam turbines using CFD is still a demanding task. One reason for this is the lack of validation data for turbines that can be used to assess the physical models applied. Experimental data from nozzle and cascade tests can be found in the open...

... Turbinenströmungen (in German) ,” Doctoral thesis, University of Karlsruhe, Karlsruhe, Germany. [13] Young , J. B. , 1982 , “ The Spontaneous Condensation of Steam in Supersonic Nozzles ,” PhysicoChem. Hydrodyn. , 3 ( 1 ), pp. 57 – 82 . [14] Starzmann , J. , Grübel , M. , and Casey , M. V...

...). Equilibrium and nonequilibrium properties according to the occurring evaporation and condensation phenomena were compared. Equilibrium conditions seem to have a reduced inlet icing risk for the wet case compared to the chilled case. However, comparing the wet case to the unaffected case showed a higher icing...

... as cooling media in the condenser of a steam power plant. Refrigerants are optimized to replace water/air as coolant in the condenser of a steam power plant. Refrigerants have much lower temperatures and much higher heat transfer rates than water or air. The thermal resistances that affect heat transfer...

... emissions simultaneously. In this paper, a novel propulsion concept, which has the potential to reduce all pollutants, is assessed regarding its performance. It is based on gas turbine technology, derived from the intercooled and recuperated engine cycle. Exhaust water condensation is facilitated inside...

... of Technology since the 1990s has led to the Graz Cycle, a zero emission power cycle of highest efficiency. It burns fossil fuels with pure oxygen which enables the cost-effective separation of the combustion C O 2 by condensation. The efforts for the oxygen supply in an air separation plant are partly...

... University of Technology since the 1990s has lead to the Graz Cycle, a zero emission power cycle of highest efficiency. It burns fossil fuels with pure oxygen, which enables the cost-effective separation of the combustion CO 2 by condensation. The efforts for the oxygen supply in an air separation plant...

...Amir A. Kharazi; Pezhman Akbari; Norbert Mu¨ller Using a novel 3-port condensing wave rotor enhancing the turbocompression in a R718 refrigeration cycle, which uses only water as a refrigerant, has been introduced. The wave-rotor implementation can increase efficiency and reduce size and cost...

...), different amounts of steam injection (or no steam injection), different amounts of exhaust gas condensation, etc., without limiting these parameters to present-day limits are investigated. A representative power plant with appropriate components for these plant enhancements is developed. A computer program...