Results 61 to 70 of about 2,896,907 (259)

Molecular kinetic analysis of a local equilibrium Carnot cycle. [PDF]

open access: yesPhysical Review E, 2016
We identify a velocity distribution function of ideal gas particles that is compatible with the local equilibrium assumption and the fundamental thermodynamic relation satisfying the endoreversibility.
Y. Izumida, K. Okuda
semanticscholar   +1 more source

Quantum Thermodynamic Cycles and quantum heat engines [PDF]

open access: yes, 2006
In order to describe quantum heat engines, here we systematically study isothermal and isochoric processes for quantum thermodynamic cycles. Based on these results the quantum versions of both the Carnot heat engine and the Otto heat engine are defined ...
C. H. Bennett   +15 more
core   +2 more sources

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

Comparing exergy and heat pump work in distillation systems

open access: yesAIChE Journal, EarlyView.
Abstract This study compares the exergy supplied to a distillation column with the actual energy consumption of a heat pump‐assisted distillation (HPAD) system. It evaluates the reliability of exergy as a proxy for heat pump work demand in such systems.
Akash Sanjay Nogaja   +2 more
wiley   +1 more source

Multicomponent Synthesis of Fluorine‐Containing Bioactive Compounds and Drugs

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Multicomponent reactions are robust synthetic tools to assamble complex polyheterocycles and other interesting molecular architectures with potential application in medicinal chemistry, including their fluorine‐containing analogues. Fluorine atoms placed strategically into bioactive molecules often enhance essential pharmacokinetic parameters like ...
Ivette Morales‐Salazar   +7 more
wiley   +1 more source

Designing New Natural‐Mimetic Phosphatidic Acid: A Versatile and Innovative Synthetic Strategy for Glycerophospholipid Research

open access: yesAngewandte Chemie, Volume 137, Issue 36, September 1, 2025.
We report the role of the fatty acyl chains in biological activities of phosphatidic acids (PA). Several PA probes having two different fatty acyl chains were synthesized through a multi‐steps synthesis and bearing various fluorophores or photo‐cross‐linkers (PCL).
Antoine Schlichter   +29 more
wiley   +2 more sources

Multi-criteria/comparative analysis and multi-objective optimization of a hybrid solar/geothermal source system integrated with a carnot battery

open access: yesCase Studies in Thermal Engineering
Among the different electrical energy storage technologies, the Carnot batteries are promising options with low specific cost that do not suffer from geographical limitations and power-capacity coupling.
Badreddine Ayadi   +5 more
doaj   +1 more source

Effect of Heat Leak and Finite Thermal Capacity on the Optimal Configuration of a Two-Heat-Reservoir Heat Engine for Another Linear Heat Transfer Law

open access: yesEntropy, 2003
: Based on a model of a two-heat-reservoir heat engine with a finite high-temperature source and bypass heat leak, the optimal configuration of the cycle is found for the fixed cycle period with another linear heat transfer law .
Chih Wu   +3 more
doaj   +1 more source

The absoption refrigerator as a thermal transformer [PDF]

open access: yes, 2009
The absorption refrigerator can be considered a thermal transformer, i.e. a device that is analogous to the electric transformer. The analogy is based on a correspondence between the extensive quantities entropy and electric charge and that of the ...
Carnot S   +4 more
core   +1 more source

Exploring Low‐Global Warming Potential Refrigerants for Medium‐Charge Systems

open access: yesEnergy Technology, EarlyView.
This study evaluates 15 low‐global warming potential (GWP) refrigerants as alternatives for medium‐charge systems, focusing on environmental impacts, operational performance, and system design integration. Key findings reveal R‐447A's suitability for standard climates and R‐454B's advantages in high ambient conditions, providing actionable guidance for
Fadi Alsouda   +3 more
wiley   +1 more source

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