Attainability of the Carnot efficiency with real gases in the regenerator of the refrigeration cycle

Cao, Qiang

doi:10.1016/j.apenergy.2018.03.102

Cited by 12 publications

(2 citation statements)

References 42 publications

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“…Payri et al has found that gas properties have a great influence on spray penetration and diffusion angles. The gas thermodynamic properties are used for refrigerant molecules to approach the Carnot efficiency …”

Section: Introductionmentioning

confidence: 99%

“…The gas thermodynamic properties are used for refrigerant molecules to approach the Carnot efficiency. 29 The research of diesel fuel and in-cylinder gas thermodynamic properties is quite important in engine simulation, particularly in the research of engine combustion, during which the fuel is burned, converting its chemical energy into the in-cylinder gas internal energy and changing the composition of the in-cylinder gas with varying crank angle. No matter what kind of engine combustion model is used, such as zero-dimensional, quasidimensional, or computational fluid dynamics (CFD) models, the fuel and in-cylinder gas thermodynamic properties have to be determined in a suitable method.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Thermodynamic Properties of Diesel Fuel and In-Cylinder Gas for Diesel Engine Combustion Investigation

Ding

Xiang

et al. 2018

Energy Fuels

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The study of the thermodynamic properties of engine fuels and the in-cylinder gas is involved in the analysis of chemical compound reaction and the thermodynamic analysis of fuel and gas, which is quite important in engine combustion investigations because the fuel chemical energy converts into internal work energy during this stage. Although the research on the thermodynamic properties of fuel and in-cylinder gas has lasted a few decades, with the development of new fuel types, developing general models with sufficient accuracy to calculate the fuel and in-cylinder gas thermodynamic properties for engines remains a challenge. This paper presents a model to calculate the diesel fuel and in-cylinder gas thermodynamic properties based on the mixture composition theory and considering the diesel fuel and in-cylinder gas mixtures in terms of the chemical reaction fundamentals. The diesel fuel and in-cylinder gas thermodynamic property modeling approach for the combustion investigation is then applied in the heat-release calculation model of a marine diesel engine, which is validated by experimental research on heat release. According to the simulation and experimental results, when considering that the diesel fuel and in-cylinder gas thermodynamic properties are affected by the in-cylinder temperature, fuel type, and air excess ratio, the engine combustion simulation results in predictions that are more accurate than those when setting the values constant. This paper provides a general approach for the investigation and application of engine fuels and in-cylinder gas thermodynamic properties, in particular for new fuel substitution in engines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%