Results 21 to 30 of about 1,569 (175)

Comments on “The Principle of Least Action for Reversible Thermodynamic Processes and Cycles”, Entropy 2018, 20, 542

open access: yesEntropy, 2018
The goal of this comment note is to express my concerns about the recent paper by Tian Zhao et al. (Entropy 2018, 20, 542). It is foreseen that this comment will stimulate a fruitful discussion of the issues involved.
Edward Bormashenko
doaj   +1 more source

Development of a Semi-Empirical Model for Estimating the Efficiency of Thermodynamic Power Cycles

open access: yesSci, 2023
Power plants constitute the main sources of electricity production, and the calculation of their efficiency is a critical factor that is needed in energy studies.
Evangelos Bellos
doaj   +1 more source

Metal Consumption of Heat Engines and Heat Capacity of their Working Fluids [PDF]

open access: yesProblems of the Regional Energetics, 2020
Ensuring efficient energy supply in general and heat supply in particular together with creation of air conditioning systems is a very urgent task of modern energy industry, particularly acute in the absence of large centralized energy sources.
Kiselev V.G.   +2 more
doaj   +1 more source

Quantum Carnot cycle with inner friction [PDF]

open access: yesQuantum Information Processing, 2020
8 pages, 4 Figures, Comments are ...
Selçuk Çakmak, Ferdi Altintas
openaire   +2 more sources

Revisiting and comparing the Carnot Cycle and the Otto Cycle

open access: yesRevista Brasileira de Ensino de Física
The reversibility of the Carnot Cycle makes it the most efficient thermodynamic cycle to convert energy as heat into work operating between two thermal reservoirs at different temperatures.
Tiago Kroetz
doaj   +1 more source

Quantum heat engines with Carnot efficiency at maximum power

open access: yesPhysical Review Research, 2022
Heat engines constitute the major building blocks of modern technologies. However, conventional heat engines with higher power yield lesser efficiency and vice versa and respect various power-efficiency trade-off relations.
Mohit Lal Bera   +3 more
doaj   +1 more source

Double Contour Thermodynamic Cycle with Unidirectional Heat Transfer between the Refrigeration and the Energy Cycle [PDF]

open access: yesProblems of the Regional Energetics, 2019
Practical characteristics of the method for improving cycles of complex cooling thermotrans-formers associated with the regeneration of the refrigeration cycle heat productivity (RCHP) are considered. The use of heat from the working fluid compression in
Gorpinko Yu.I.   +4 more
doaj   +1 more source

A Preliminary Design and Modeling Analysis of Two-Phase Volumetric Expanders for a Novel Reversible Organic Rankine-Based Cycle for Carnot Battery Technology

open access: yesApplied Sciences, 2022
Carnot battery technology appears to be a promising solution to increase the development of power generation and offers a good solution for high-capacity, day-to-day energy storage.
Sindu Daniarta   +2 more
doaj   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Carnot Cycles in a Harmonically Confined Ultracold Gas across Bose–Einstein Condensation

open access: yesEntropy, 2023
Carnot cycles of samples of harmonically confined ultracold 87Rb fluids, near and across Bose–Einstein condensation (BEC), are analyzed. This is achieved through the experimental determination of the corresponding equation of state in terms of the ...
Ignacio Reyes-Ayala   +6 more
doaj   +1 more source

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