Stirling Refrigerating Machine Modeling Using Schmidt and Finite Physical Dimensions Thermodynamic Models: A Comparison with Experiments - Université Paris Nanterre
Article Dans Une Revue Entropy Année : 2021

Stirling Refrigerating Machine Modeling Using Schmidt and Finite Physical Dimensions Thermodynamic Models: A Comparison with Experiments

Résumé

The purpose of the study is to show that two simple models that take into account only the irreversibility due to temperature difference in the heat exchangers and imperfect regeneration are able to indicate refrigerating machine behavior. In the present paper, the finite physical dimensions thermodynamics (FPDT) method and 0-D modeling using the Schmidt model with imperfect regeneration were applied in the study of a β type Stirling refrigeration machine.The 0-D modeling is improved by including the irreversibility caused by imperfect regeneration and the finite temperature difference between the gas and the heat exchangers wall. A flowchart of the Stirling refrigerator exergy balance is presented to show the internal and external irreversibilities. It is found that the irreversibility at the regenerator level is more important than that at the heat exchangers level. The energies exchanged by the working gas are expressed according to the practical parameters, necessary for the engineer during the entire project. The results of the two thermodynamic models are presented in comparison with the experimental results, which leads to validation of the proposed FPDT model for the functional and constructive parameters of the studied refrigerating machine.

Domaines

Physique des Hautes Energies - Phénoménologie [hep-ph]

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https://hal.parisnanterre.fr/hal-04129996

Soumis le : jeudi 15 juin 2023-16:31:13

Dernière modification le : mardi 14 janvier 2025-06:26:40

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Dates et versions

hal-04129996 , version 1 (15-06-2023)

Identifiants

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Cătălina Dobre, Lavinia Grosu, Alexandru Dobrovicescu, Georgiana Chişiu, Mihaela Constantin. Stirling Refrigerating Machine Modeling Using Schmidt and Finite Physical Dimensions Thermodynamic Models: A Comparison with Experiments. Entropy, 2021, 23 (3), pp.368. ⟨10.3390/E23030368⟩. ⟨hal-04129996⟩

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