scholarly journals From Quantum Quasiparticles to a Classical Gas

Physics ◽  
2019 ◽  
Vol 12 ◽  
Author(s):  
Pietro Massignan
Keyword(s):  
Classical Gas

scholarly journals Equation of state for a classical gas of BPS black holes

2001 ◽  
Vol 64 (10) ◽  
Author(s):  
Nahomi Kan ◽  
Takuya Maki ◽  
Kiyoshi Shiraishi
Keyword(s):  
Black Holes ◽  
Equation Of State ◽  
Classical Gas

scholarly journals Thermodynamic Cycle Concepts for High-Efficiency Power Plans. Part A: Public Power Plants 60+

2019 ◽  
Vol 11 (2) ◽  
pp. 554 ◽  
Author(s):  
Krzysztof Kosowski ◽  
Karol Tucki ◽  
Marian Piwowarski ◽  
Robert Stępień ◽  
Olga Orynycz ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
High Efficiency ◽  
Thermodynamic Cycle ◽  
Economic Resilience ◽  
Public Power ◽  
Pass System ◽  
Classical Gas ◽  
Gas Turbine Cycle

An analysis was carried out for different thermodynamic cycles of power plants with air turbines. Variants with regeneration and different cogeneration systems were considered. In the paper, we propose a new modification of a gas turbine cycle with the combustion chamber at the turbine outlet. A special air by-pass system of the combustor was applied and, in this way, the efficiency of the turbine cycle was increased by a few points. The proposed cycle equipped with a regenerator can provide higher efficiency than a classical gas turbine cycle with a regenerator. The best arrangements of combined air–steam cycles achieved very high values for overall cycle efficiency—that is, higher than 60%. An increase in efficiency to such degree would decrease fuel consumption, contribute to the mitigation of carbon dioxide emissions, and strengthen the sustainability of the region served by the power plant. This increase in efficiency might also contribute to the economic resilience of the area.

scholarly journals Ultrarelativistic Gas with Zero Chemical Potential

Symmetry ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 249
Author(s):  
Daniel Mata-Pacheco ◽  
Gonzalo Parga ◽  
Fernando Angulo-Brown
Keyword(s):  
Chemical Potential ◽  
Ideal Gas ◽  
Cavity Radiation ◽  
Classical Gas ◽  
Photon Gas ◽  
Spin Degeneracy ◽  
Classical Particles

In this work, we propose a set of conditions such that an ultrarelativistic classical gas can present a photon-like behavior. This is achieved by assigning a zero chemical potential to the ultrarelativistic ideal gas. The resulting behavior is similar to that of a Wien photon gas. It is found to be possible only for gases made of very lightweight particles such as neutrinos, as long as we treat them as classical particles, and it depends on the spin degeneracy factor. This procedure allows establishing an analogy between an evaporating gas and the cavity radiation.

Enhanced permeation arising from dual transport pathways in hybrid polymer–MOF membranes

2016 ◽  
Vol 9 (3) ◽  
pp. 922-931 ◽  
Author(s):  
Norman C. Su ◽  
Daniel T. Sun ◽  
Christine M. Beavers ◽  
David K. Britt ◽  
Wendy L. Queen ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Gas Transport ◽  
Separation Performance ◽  
Inorganic Membranes ◽  
Hybrid Polymer ◽  
Transport Pathways ◽  
Transport Behavior ◽  
Classical Gas

Hybrid polymer/inorganic membranes with dual transport pathways exhibit exceptional separation performance for carbon capture and non-classical gas transport behavior upon formation of a percolative network.

scholarly journals Quantitative study of spin noise spectroscopy in a classical gas ofK41atoms

2006 ◽  
Vol 74 (4) ◽  
Author(s):  
Bogdan Mihaila ◽  
Scott A. Crooker ◽  
Dwight G. Rickel ◽  
Krastan B. Blagoev ◽  
Peter B. Littlewood ◽  
...  
Keyword(s):  
Quantitative Study ◽  
Spin Noise ◽  
Noise Spectroscopy ◽  
Classical Gas

Thermal Choking Due to Nonequilibrium Condensation

1994 ◽  
Vol 116 (3) ◽  
pp. 599-604 ◽  
Author(s):  
Abhijit Guha
Keyword(s):  
Gas Dynamics ◽  
Control Volume ◽  
Full Time ◽  
Condensation Zone ◽  
Explicit Equation ◽  
General Validity ◽  
Integral Control ◽  
Classical Gas ◽  
Nonequilibrium Condensation ◽  
Quantity Of Heat

A theory of thermal choking due to nonequilibrium condensation in a nozzle is presented. An explicit equation for the critical quantity of heat in condensing flow has been derived. The equation is of general validity and applies to vapor-droplet flow with or without a carrier gas. It has been usually assumed in the literature that the classical gas dynamics result for the critical quantity of heat applies in condensing flow as well. The classical result is, however, obtained by considering external heat addition to an ideal gas in a constant area duct. In this paper it is shown that the area variation across the condensation zone (although small) and the depletion in the mass of vapor as a result of condensation have profound effects on the critical quantity of heat. The present equation (derived from an integral, control-volume approach) agrees very well with results from full time-marching solution of the nonequilibrium, differential gas dynamic equations. The classical gas dynamics result, on the other hand, seriously underpredicts the critical heat for condensing flow in nozzles (by a factor of three in the example calculation presented).

scholarly journals Dynamics of a classical gas including dissipative and mean-field effects

2003 ◽  
Vol 68 (4) ◽  
Author(s):  
P. Pedri ◽  
D. Guéry-Odelin ◽  
S. Stringari
Keyword(s):  
Mean Field ◽  
Field Effects ◽  
Classical Gas
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