Results 31 to 40 of about 567,849 (320)

Can the entanglement entropy be the origin of black-hole entropy ? [PDF]

open access: yes, 1997
Entanglement entropy is often speculated as a strong candidate for the origin of the black-hole entropy. To judge whether this speculation is true or not, it is effective to investigate the whole structure of thermodynamics obtained from the entanglement
A. P. Balachandran   +26 more
core   +2 more sources

Life-Cycle Assessment of Sector-Coupled National Energy Systems: Environmental Impacts of Electricity, Heat, and Transportation in Germany Till 2050

open access: yesFrontiers in Energy Research, 2021
National energy models provide decarbonization strategies. Most national energy models focus on costs and greenhouse gas emissions only. However, this focus carries the risk that burdens shift to other environmental impacts.
Nils Baumgärtner   +9 more
doaj   +1 more source

Multiscale Thermodynamics

open access: yesEntropy, 2021
Multiscale thermodynamics is a theory of the relations among the levels of investigation of complex systems. It includes the classical equilibrium thermodynamics as a special case, but it is applicable to both static and time evolving processes in externally and internally driven macroscopic systems that are far from equilibrium and are investigated at
openaire   +6 more sources

The Use of Organic Rankine Cycles for Recovering the Heat Lost in the Compression Area of a Cryogenic Air Separation Unit

open access: yesEntropy, 2022
The use of organic Rankine cycles (ORCs) is a viable solution for the recovery of waste heat. For an air separation unit (ASU) with a production of V˙O2=58300mN3/h operating in Romania, the value of utilization of the heat transferred to the cooling ...
Claudia Ionita   +4 more
doaj   +1 more source

Framework for Automated Data-Driven Model Adaption for the Application in Industrial Energy Systems

open access: yesIEEE Access, 2021
Increasing flexibility and efficiency of energy-intensive industrial processes is generally seen as a big lever towards a decarbonized energy system of the future.
Leopold Prendl   +3 more
doaj   +1 more source

Energy and exergy analysis of a flat plate collector using collector test equations [PDF]

open access: yesE3S Web of Conferences, 2020
This paper presents the energetic and exergetic analysis of a widely used flat plate collector based on the collector testing equations. The evaluation of the performances of the collector is done under the climatic conditions corresponding to a typical ...
Gheorghian Adina-Teodora   +2 more
doaj   +1 more source

A Resource Theory for Work and Heat [PDF]

open access: yes, 2017
Several recent results on thermodynamics have been obtained using the tools of quantum information theory and resource theories. So far, the resource theories utilised to describe thermodynamics have assumed the existence of an infinite thermal reservoir,
Fritz, Tobias   +2 more
core   +2 more sources

Functionalized Controlled Porous Glasses for Producing Radical-Free Hyperpolarized Liquids by Overhauser DNP

open access: yesMolecules, 2022
Overhauser dynamic nuclear polarization (ODNP) can be used as a tool for NMR signal enhancement and happens on very short time scales. Therefore, ODNP is well suited for the measurement of fast-flowing samples, even in compact magnets, which is ...
Raphael Kircher   +3 more
doaj   +1 more source

Superheated steam production from a large-scale latent heat storage system within a cogeneration plant

open access: yesCommunications Engineering, 2023
During phase change, phase change materials absorb or release latent heat at a nearly constant temperature. Latent heat thus can be stored and integrated with evaporation/condensation systems such as steam generators within a relatively narrow range of ...
Maike Johnson, Michael Fiss
doaj   +1 more source

Quantum Thermodynamics: A Nonequilibrium Green's Functions Approach [PDF]

open access: yes, 2015
We establish the foundations of a nonequilibrium theory of quantum thermodynamics for noninteracting open quantum systems strongly coupled to their reservoirs within the framework of the nonequilibrium Green functions (NEGF). The energy of the system and
Esposito, Massimiliano   +2 more
core   +3 more sources

Home - About - Disclaimer - Privacy