Results 11 to 20 of about 148,892 (315)

Gravitation and Thermodynamics [PDF]

open access: bronzeNature, 1917
DR. TODD (NATURE, March 1) suggests that when one gravitative mass approaches another it acquires heat. This might occur when, as is usually (but not always) the case, the body moves up the gradient of potential; for then the energy of field displaced by the body would increase.
J. S. G. Thomas
openalex   +4 more sources

Thermodynamic potentials and thermodynamic relations in nonextensive thermodynamics [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2011
The generalized Gibbs free energy and enthalpy is derived in the framework of nonextensive thermodynamics by using the so-called physical temperature and the physical pressure. Some thermodynamical relations are studied by considering the difference between the physical temperature and the inverse of Lagrange multiplier.
Jiulin Du, Lina Guo
openaire   +3 more sources

Quantum thermodynamics: Thermodynamics at the nanoscale [PDF]

open access: yesJournal of Modern Optics, 2004
5 pages.
Allahverdyan, A.   +2 more
openaire   +6 more sources

Irradiance characteristic of a small-scale solar simulator for testing thermal collectors [PDF]

open access: yesE3S Web of Conferences, 2019
This paper describes the development of a small-scale solar simulator for research and educational purposes. The main goal is to provide a uniform and stable distribution of irradiation from a set of four floodlight halogen lamps, over a targeted area of
Gheorghian Adina-Teodora   +4 more
doaj   +1 more source

Air entrapment and bubble formation during droplet impact onto a single cubic pillar

open access: yesScientific Reports, 2021
We study the vertical impact of a droplet onto a cubic pillar of comparable size placed on a flat surface, by means of numerical simulations and experiments.
Weibo Ren   +3 more
doaj   +1 more source

Chemical Analysis and Electrochemical Monitoring of Extremely Low-Concentration Corrosive Impurity MgOHCl in Molten MgCl2–KCl–NaCl

open access: yesFrontiers in Energy Research, 2022
MgCl2–KCl–NaCl is a promising thermal energy storage (TES) material and heat transfer fluid (HTF) with high operating temperatures of >700°C for next-generation concentrating solar power (CSP) plants.
Qing Gong   +5 more
doaj   +1 more source

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

Exergetic Analysis of a Cryogenic Air Separation Unit

open access: yesEntropy, 2022
This case study analyzes a cryogenic air separation unit (ASU) with a production of V˙O2=58,300 [m3Nh] of gaseous oxygen with a concentration greater than 98.5%, operating in Romania on a steel plant platform.
Sorin Bucsa   +6 more
doaj   +1 more source

Thermodynamics of decoherence

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023
We investigate the non-equilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment’s energy is not generally conserved and in this work we show that this leads to non-trivial ...
Maria Popovic   +2 more
openaire   +2 more sources

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