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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-472-4

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

LOCAL STABILITY ANALYSIS FOR OPTIMAL PERFORMANCE OF AN ENDOREVERSIBLE CARNOT REFRIGERATOR WITH LINEAR PHENOMENOLOGICAL HEAT TRANSFER LAW

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DOI: 10.1615/TFEC2018.fnd.020742

Resumo

Local stability analysis of an endoreversible Carnot refrigerator at the maximum cooling load is analyzed with linear phenomenological heat transfer law between working fluid and heat reservoir. After a small perturbation the system state exponentially decays to steady state with either of two relaxation times that described as a function of heat capacity, total heat exchange area, temperatures of heat reservoirs and heat transfer coefficients. The behavior of solutions of the system is presented qualitatively by sketching its phase portrait. It is suggested that both energetic properties and local stability of the system should be considered simultaneously. The results can provide some guidelines for designing the real refrigerators.