Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Tello-Oquendo, Fernando M.; Navarro-Peris, Emilio; Barceló-Ruescas, Francisco; Gonzálvez-Maciá, José

doi:10.1016/j.ijrefrig.2019.06.031

Cited by 34 publications

(26 citation statements)

References 30 publications

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“…El modelo del compresor que se implementó se basa en el modelo semi-empírico según Tello-Oquendo et al (2018). Dicho modelo reproduce la eficiencia isentrópica del compresor y la eficiencia volumétrica en función de un conjunto de parámetros que pueden obtenerse mediante correlaciones de los datos de caracterización estándar del compresor.…”

Section: Metodologíaunclassified

“…Las influencias relativas de las pérdidas en las eficiencias de los compresores se estiman en función de las condiciones de trabajo (relación de presiones). Para este propósito, se implementa un modelo semi-empírico de un compresor scroll de acuerdo a la referencia Tello-Oquendo et al (2018). La validación del modelo se realiza utilizando datos experimentales de un compresor scroll, que se ensaya en un banco de pruebas calorimétricas en una amplia gama de condiciones de funcionamiento.…”

Section: Introductionunclassified

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Comparación de la influencia de las pérdidas energéticas en las eficiencias de un compresor de desplazamiento (scroll) y un compresor de pistones utilizados en bombas de calor

2020

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Este artículo presenta la comparación de la influencia de las pérdidas energéticas en las eficiencias de un compresor de desplazamiento scroll y un compresor de pistones. Las influencias de las pérdidas del compresor scroll se estimaron con un modelo semi-empírico validado experimentalmente. Para el compresor de pistones se utilizaron datos de la literatura previa. Respecto a la eficiencia isentrópica, las pérdidas mecánicas, eléctricas y las fugas presentan una influencia similar en los dos compresores de aproximadamente el 90%; la transferencia de calor y las pérdidas de presión en la succión son 7% más influyentes en el compresor de pistones. Respecto a la eficiencia volumétrica, las pérdidas mecánicas, eléctricas y las fugas son aproximadamente 39% más influyentes en el compresor scroll y la influencia de las pérdidas de presión en la succión y la transferencia de calor son 21% mayores en el compresor de pistones. Se concluye que el compresor de pistones tiene un mayor flujo másico de fugas.

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Section: Metodologíaunclassified

Section: Introductionunclassified

Comparación de la influencia de las pérdidas energéticas en las eficiencias de un compresor de desplazamiento (scroll) y un compresor de pistones utilizados en bombas de calor

2020

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“…They have no dead space, contact between the sides of the rolls and at the base and top edges is almost perfect and constant; therefore, it has excellent axial and radial suitability. As a result, scroll compressors provide several advantages such as high volumetric efficiency, low vibration and noise, torque variation and low leakage [16][17][18]. The disadvantage of volumetric compressors is that lubricating oil tends to flow out and mix with the working fluid [19], thereby reducing lubrication capacity, potentially causing engine failure and impacting cycle performance [20].…”

Section: Introductionmentioning

confidence: 99%

Study on the Performance of Scroll Compressor Applied for Medium Temperature Refrigeration System

Suamir

Rasta

Winarta

et al. 2021

ARFMTS

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Recent research shows great interest in increasing energy efficiency of a refrigeration system and finding appropriate configurations to optimize its performance. One of the main component in the refrigeration system is compressor. Therefore, the compressor plays an important role in a refrigeration system for energy performance optimization. The study is aimed to experimentally investigate temperature and energy performance of a scroll compressor applied for medium temperature refrigeration systems. Tests were conducted in a water cooled medium temperature refrigeration system. Temperature performance evaluation of the compressor referred to the IEEE Standard 112, while energy efficiency of the compressor was calculated from the energy performance of the refrigeration system. The results clearly show that evaporating temperature together with degree of superheat at suction line of the compressor can significantly affect temperature performance of the scroll compressor. Results of the study have also shown significant improvement on the compressor energy efficiency accounted for 10.4% when the evaporating temperature increases from -8.3 °C to -2.4 °C.

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“…However, these models did not consider the influence of the heat transfer from the compressor to the environment. Fernando et al [14] presented a semiempirical model considering the ideal evolution of the refrigerant throughout the compressor and the main loss sources in the compression process. This model contained ten empirical parameters, which could be acquired from experimental or catalog data.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Steady-State Compressor Model for Real-Time Applications in Performance Monitoring, Control and Optimization

et al. 2021

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In this study, a hybrid steady-state compressor model is proposed that can be used in the realtime performance monitoring, control and optimization of the vapor compression cycle. In the proposed model, first, a detailed analysis of the mass flow rate is presented, which is based on the volumetric efficiency concept and the assumption of a polytropic compression process. Then, discharge temperature of the refrigerant and power consumption of the compressor are also investigated. Three semiempirical models are constructed respectively. Further, to tune the unknown empirical parameters of the models, a social learning particle swarm optimization (SLPSO) algorithm is developed by using the real-time experimental data. An experimental apparatus of a refrigerant system is tested to validate the proposed models. The experimental results demonstrate that the proposed models accurately predict the performance of real-time operating compressors. Meanwhile, the models identified by the SLPSO algorithm are more accurate than those identified by the traditional least-squares method.INDEX TERMS Compressor, hybrid modeling, control, parameter identifications, social learning particle swarm optimization.

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Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Cited by 34 publications

References 30 publications

Comparación de la influencia de las pérdidas energéticas en las eficiencias de un compresor de desplazamiento (scroll) y un compresor de pistones utilizados en bombas de calor

Comparación de la influencia de las pérdidas energéticas en las eficiencias de un compresor de desplazamiento (scroll) y un compresor de pistones utilizados en bombas de calor

Study on the Performance of Scroll Compressor Applied for Medium Temperature Refrigeration System

A Hybrid Steady-State Compressor Model for Real-Time Applications in Performance Monitoring, Control and Optimization

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