In this work, an evaluation and quantification of the impact using mixtures based on supercritical carbon dioxide “s-CO2” (s-CO2/COS, s-CO2/H2S, s-CO2/NH3, s-CO2/SO2) are made as a working fluid in simple complex recompression Brayton s-CO2 power cycle configurations that have pressure drops their components. These cycles coupled with solar thermal plant parabolic-trough collector (PTC) technol...

Advanced power cycles—such as the supercritical carbon dioxide (sCO2) cycle—have potential to reduce levelized cost of energy (LCOE) concentrated solar thermal (CST) plants by significantly boosting their overall solar-to-electric efficiency. To successfully integrate these cycles into CST plants, industry may need transition away from liquid working fluids (e.g., synthetic oils and molten salt...

Abstract In this paper, a modified loss breakdown approach is introduced for axial turbines operating with supercritical carbon dioxide (sCO2) mixtures using CFD results. Loss analysis has been previously developed two approaches, however each its own uncertainties. The first neglects the effects of cross-interaction between different sources, while second ignores potential changes to boundary ...

Thermal-power cycles operating with supercritical carbon dioxide (sCO2) could have a significant role in future power generation systems applications including fossil fuel, nuclear power, concentrated-solar and waste-heat recovery. The use of sCO2 as working fluid offers potential benefits high thermal efficiencies using heat-source temperatures ranging between approximately 350∘C 800∘C, simple...

Whether triply periodic minimal surface (TPMS) heat exchangers are applicable to cooling or cold storage systems as a cooler for supercritical carbon dioxide (SCO2) is undocumented. Here the conjugated transfer of SCO2 in TPMS Schoen-G exchanger and printed circuit (PCHE) was predicted based on three-dimensional steady turbulent Reynolds-averaged Navier-Stokes equations, energy equation shear s...

Buoyancy effects in vertical, upward laminar flows can result an augmentation heat transfer rates to supercritical CO2 (sCO2) near its pseudocritical temperature (TPC). This is contrast corresponding the turbulent regime, or sCO2 (with minimum buoyancy effects), where a deterioration TPC, followed by recovery phase, have been observed. To exploit these enhancement characteristics and improve ex...

This manuscript investigates the supercritical carbon dioxide (sCO2) power cycle employed in block of concentrated solar (CSP) plants—solar tower—as an alternative for desalination, developed with either distillation or reverse osmosis. concept is investigated as a possible up-scaling SOLMIDEFF project, originally based on hot-air micro gas turbine combined dish collector. For upscaled concept,...

Abstract Supercritical CO2 (sCO2) power cycles have gained prominence for their expected excellent performance and compactness. Among benefits, they may potentially reduce the cost of Concentrated Solar Power (CSP) plants. Because critical temperature is close to ambient temperatures in areas with good solar irradiation, dry cooling penalise efficiency sCO2 CSP Recent research has investigated ...