Thermodynamic analysis of the V-type Stirling-cycle refrigerator |
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Authors: |
Ercan Ataer H Karabulut |
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Affiliation: | aMechanical Engineering Department, Gazi University, Maltepe, 06570 Ankara, Turkey;bMechanical Engineering Department, Akdeniz University, Topçular, 07200 Antalya, Turkey |
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Abstract: | The thermodynamic analysis of a V-type Stirling-cycle refrigerator is performed. The Stirling-cycle refrigerator consists of expansion and compression spaces, cooler, heater and regenerator, and divided into 14 fixed control volumes subjected to a periodic mass flow. The conservation of mass and energy equation are written for each control volume. A computer program is prepared in FORTRAN, and the basic equations are solved iteratively. The mass, temperature and density of working fluid in each control volume are calculated for a given charge pressure, engine speed, and fixed heater and cooler surface temperatures, and the results are obtained from a PC. The heat transfer coefficients are assumed constant. The work, instantaneous pressure and COP of the Stirling-cycle refrigerator are also calculated. The steady cyclic conditions are obtained for temperature after few cycles and the results are given by diagrams. |
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Keywords: | Thermodynamic cycle Stirling Modelling Software Calculation Performance COPMots clé s: Cycle thermodynamique Stirling Modé lisation Logiciel Calcul Performance COP |
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