Results 51 to 60 of about 3,631,969 (388)

Improvement of gas turbine engines due to isothermal expansion in the turbine

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The article presents the results of the study of application of isothermal expansion in the turbine of gas turbine engines as a way of improving the thermodynamic cycle. We present equations of work and ideal cycle efficiency of a gas turbine engine with
M. A. Muraeva, I. M. Gorjunov
doaj   +1 more source

Second Law of Thermodynamics with Discrete Quantum Feedback Control

, 2008
A new thermodynamic inequality is derived which leads to the maximum work that can be extracted from multi-heat baths with the assistance of discrete quantum feedback control. The maximum work is determined by the free-energy difference and a generalized
A. S. Holevo, G. J. Milburn, J. C. Maxwell, M. A. Nielsen, Masahito Ueda, R. Landauer, T. M. Cover, Takahiro Sagawa   +7 more
core   +1 more source

HIx system thermodynamic model for hydrogen production by the sulfur-iodine cycle [PDF]

, 2009
The HIx ternary system (H2O – HI – I2) is the latent source of hydrogen for the Sulfur – Iodine thermo-chemical cycle. After analysis of the literature data and models, a homogeneous approach with the Peng-Robinson equation of state used for both the ...
Baudouin, Olivier, Borgard, Jean-Marc, Carles, Philippe, Floquet, Pascal, Gerbaud, Vincent, Hadj-Kali, Mohamed, Joulia, Xavier   +6 more
core   +2 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Are Conventional Thermochemical Calculations a Viable Alternative to Measurements of Vaporization Enthalpy of Azeotropes?

Molecules
The majority of the studies of vaporization enthalpy dealt with pure substances. Reports of this quantity for azeotropes were scarce despite that similar experimental methods could be applied in such measurements.
Eliza Kołodziejczyk, Wojciech Marczak
doaj   +1 more source

Feasibility Study of the CO₂ Regenerator Parameters for Oxy-Fuel Combustion Power Cycle

Inventions, 2022
The atmosphere carbon dioxide content grows subsequently due to anthropogenic factors. It may be considerably mitigated by the development of thermal power plants with near zero emissions.
Vladimir Kindra, Ivan Komarov, Sergey Osipov, Olga Zlyvko, Igor Maksimov   +4 more
doaj   +1 more source

Maximum power operation of interacting molecular motors

, 2013
We study the mechanical and thermodynamic properties of different traffic models for kinesin which are relevant in biological and experimental contexts.
Golubeva, Natalia, Imparato, Alberto
core   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Thermodynamic Analysis on the Performance of a Low-Enthalpy Geothermal Field Using a CO₂ Supercritical Binary Cycle

Chemical Engineering Transactions, 2019
The exploitation of geothermal energy can play a significant role for providing clean and renewable energy, especially when environmentally-friendly working fluids are used for power production.
Dimitrios Chasapis, Dimitrios Misirlis, Petros A. Papadopoulos, Kostas Kleidis   +3 more
doaj   +1 more source

Structural and Parametric Optimization of S–CO₂ Nuclear Power Plants

Entropy, 2021
The transition to the use of supercritical carbon dioxide as a working fluid for power generation units will significantly reduce the equipment′s overall dimensions while increasing fuel efficiency and environmental safety.
Nikolay Rogalev, Andrey Rogalev, Vladimir Kindra, Ivan Komarov, Olga Zlyvko   +4 more
doaj   +1 more source