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Abdelrahman S. Abdeldayem, Salma I. Salah, Omar A. Aqel, Martin T. White and Abdulnaser I. Sayma
Supercritical carbon dioxide (sCO2) can be mixed with dopants such as titanium tetrachloride (TiCl4), hexafluoro-benzene (C6F6), and sulphur dioxide (SO2) to raise the critical temperature of the working fluid, allowing it to condense at ambient temperat...
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María José Montes, Rafael Guedez, David D?Souza and José Ignacio Linares
This work is intended as a guide for the design of solar thermal tower plants based on a microchannel radial receiver refrigerated by a pressurised gas, and coupled to a supercritical CO2 power cycle. The work demonstrates the influence of the receiver c...
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S. Hamed Fatemi Alavi, Amirreza Javaherian, S. M. S. Mahmoudi, Saeed Soltani and Marc A. Rosen
Gas turbine power plants have important roles in the global power generation market. This paper, for the first time, thermodynamically examines the impact of steam injection for a combined cycle, including a gas turbine cycle with a two-stage turbine and...
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Alexander Johannes Hacks and Dieter Brillert
In the sCO2-HeRo project, the Chair of Turbomachinery at the University of Duisburg-Essen developed, built and tested a turbomachine with an integral design in which the compressor, generator and turbine are housed in a single hermetic casing. However, b...
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Ahmad Hazim Abdul Aziz, Nor Faadila Mohd Idrus, Nicky Rahmana Putra, Mohd Azrie Awang, Zuhaili Idham, Hasmadi Mamat and Mohd Azizi Che Yunus
Rosmarinic acid (RA) is present in a broad variety of plants, including those in the Lamiaceae family, and has a wide range of pharmacological effects, particularly antioxidant activity. To extract RA from Orthosiphon stamineus (OS) leaves, a Lamiaceae p...
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Natalia P. Prorokova, Tatyana Yu. Kumeeva and Igor V. Kholodkov
The paper presents a comparative analysis of the surface structure and morphology of hydrophobic coatings formed on a polyester fabric from various types of low molecular weight tetrafluoroethylenes by a new method. The low molecular weight compounds use...
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José P. Coelho, Maria Paula Robalo, Inês S. Fernandes and Roumiana P. Stateva
This study presents an optimization strategy for recovery of oil from Japonica Luna rice bran using supercritical carbon dioxide (scCO2), based on design of experiments (DoE). Initially, a 24-1 two level fractional factorial design (FFD) was used, and pr...
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Christiano B. Peres, Pedro M. R. Resende, Leonel J. R. Nunes and Leandro C. de Morais
One of society?s major current challenges is carbon dioxide emissions and their consequences. In this context, new technologies for carbon dioxide (CO2) capture have attracted much attention. One of these is carbon capture and utilization (CCU). This wor...
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Hoon Moon, Kyeongtae Kim, Ji-Hyun Kim, Minhee Lee and Chul-Woo Chung
The presence of free lime and periclase in converter slag prevents it from directly being utilized as a source of concrete aggregate due to the deleterious expansion caused by reaction of free lime and periclase. In general, a six-month aging period is s...
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Khaled Alawadhi, Abdullah Alfalah, Bashar Bader, Yousef Alhouli and Ahmed Murad
The rising environmental problems due to fossil fuels? consumption have pushed researchers and technologists to develop sustainable power systems. Due to properties such as abundance and nontoxicity of the working fluid, the supercritical carbon (sCO2
sC...
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