نتایج جستجو برای: adiabatic engine

تعداد نتایج: 84257  

Journal: :Entropy 2017
Francisco J. Peña Alejandro González Alvaro S. Nunez Pedro A. Orellana René G. Rojas Patricio Vargas

We study the effect of the degeneracy factor in the energy levels of the well-known Landau problem for a magnetic engine. The scheme of the cycle is composed of two adiabatic processes and two isomagnetic processes driven by a quasi-static modulation of external magnetic field intensity. We derive the analytical expression of the relation between the magnetic field and temperature along the adi...

ژورنال: تحقیقات موتور 2019
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This research proposes the effect of temperature variation in the Prandtl number on the power, the efficiency and the heat loss of the Gama-type Stirling engine. It should be noted that the Prandtl number included the viscosity, the thermal conductivity coefficient and the specific heat at constant pressures of the working fluid, which the temperature dependency of such first two thermo-dynamic...

Journal: :Physical review research 2021

We investigate a heat engine under an adiabatic (Thouless) pumping process. In this process, the extracted work and lower bound on dissipated availability are characterized by vector potential Riemannian metric tensor, respectively. derive trade-off relation between power effective efficiency. also explicitly calculate as well efficiency for spin-boson model coupled to two reservoirs.Received 1...

2017
Francisco J. Peña A. González A. S. Nunez P. A. Orellana René G. Rojas P. Vargas

We study the effect of the degeneracy factor in the energy levels of the well-known Landau problem for a magnetic quantum Otto engine. The scheme of the cycle is composed of two quantum adiabatic processes and two quantum isomagnetic processes driven by a quasi-static modulation of external magnetic field intensity. We derive the analytical expression of the relation between the magnetic field ...

Journal: :Journal of Physics A: Mathematical and Theoretical 2016

2011
A. Romagnoli R. Martinez-Botas

This paper presents the performance of a turbocharger under non-adiabatic conditions in order to assess the impact of heat transfer. A commercial turbocharger was installed on a 2.0 liter diesel engine and measurements were conducted for a range of engine speeds and loads. The test results enabled to assess the impact of the engine on the temperature distribution of the bodies constituting the ...

2008
B. Wen

In order to provide a basis for the establishment of an applicable strategy for the development of aero-engine thermal cycles, the evolution of compression processes in aero-engine thermal cycles is reviewed in this paper by analyzing the compression requirements for the injection or extraction of energy. It is therefore concluded that the injection of energy in the compression is required for ...

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