Semi-empirical modelling of a variable speed scroll compressor with vapour injection

Dardenne, Laurent; Fraccari, E; Maggioni, A; Molinaroli, Luca; Proserpio, Luca; Winandy, Eric

doi:10.1016/j.ijrefrig.2015.03.004

Cited by 43 publications

(30 citation statements)

References 21 publications

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“…Leakage, suction, and discharge pressure drop were not considered in the model and no information about the validation of the predicted injection mass flow rate was given. Based on the former model, Dardenne et al (2015) developed a semiempirical model of a variable speed scroll compressor with vapor-injection working with R-410A as refrigerant. The model requires 10 parameters fitted from experimental data to simulate the process that the refrigerant undergoes from suction and injection ports to discharge port.…”

Section: Introductionmentioning

confidence: 99%

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

Tello-Oquendo

Navarro-Peris

Barceló-Ruescas

et al. 2019

International Journal of Refrigeration

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This paper presents a semi-empirical model of scroll compressors and proposes a methodology in order to extend this model to vapor-injection scroll compressors. The model takes into account the ideal evolution of the refrigerant throughout the compressor and considers the main sources of losses in the compression process. The model is able to predict the compressor and volumetric efficiencies in terms of ten empirical parameters, which have a direct physical interpretation. For the model validation, a series of four non-injected scroll compressors of different capacities were tested using R-290 and a scroll compressor with vapor-injection (SCVI) was characterized using R-407C. Results show a correct agreement between the experimental and calculated compressor efficiencies, with a maximum deviation of ±5%. Furthermore, the model estimates accurately the discharge temperature of the refrigerant, compressor power input, and refrigerant mass flow rate in the suction and injection port. Finally, the SCVI model response was evaluated by varying the intermediate pressure and the injection superheat.

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Section: Introductionmentioning

confidence: 99%

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

Tello-Oquendo

Navarro-Peris

Barceló-Ruescas

et al. 2019

International Journal of Refrigeration

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“…More research work was still required. Since then, dramatic studies were conducted on applications of variable speed drives in HVAC systems [7][8][9]. Unlike fans and pumps, the scroll and reciprocating compressors usually do not have a cubic relationship between power and frequency.…”

Section: Variable Speed Compressorsmentioning

confidence: 99%

Variable Frequency Drive Applications in HVAC Systems

Li¹

2015

New Applications of Electric Drives

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Building heating ventilation and air-conditioning HVAC systems are designed to operate at the peak load, which only occurs in a very short period of time throughout the year. One of the most effective ways to improve building energy efficiency is to utilize the variable frequency drives VFDs . They are widely used in the HVAC field, including fans, pumps, compressors, etc. In a VFD-equipped system, the VFD adjusts the speed of one or more motors based on the system load requirements and operation schedule, resulting in a dramatic cut in energy consumption.This article systematically introduces the application of VFDs in HVAC systems, including heating systems, ventilation systems, cooling systems, and refrigeration systems in commercial and industrial buildings. First, the principles are introduced for VFDs, variable speed fans, pumps, and compressors. Next, the control application of VFDs on each type of system equipment is summarized. In this section, the schematic diagram of each system as well as the detailed control strategy for each application is presented. In addition, the application of VFD on fault detection and diagnosis FDD is introduced. Lastly, some technical issues and concerns are discussed with potential solutions provided.

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“…El modelo calcula el caudal másico, la potencia eléctrica del compresor y la temperatura de descarga del refrigerante con desviaciones inferiores a ± 10%, ± 10% y ± 5 K, respectivamente, en condiciones típicas de funcionamiento. A partir del modelo de Winandy et al (2002), se han derivado varios trabajos sobre compresores scroll de simple etapa (Duprez et al, 2007(Duprez et al, y 2010, compresores que trabajan con hidrocarburos (Byrne et al, 2014), compresores scroll inundados de aceite con inyección de líquido (James et al, 2016) y compresores scroll de velocidad variable con inyección de vapor (Dardenne et al, 2015). En todos estos estudios, se consideran algunas fuentes de pérdidas energéticas como las transferencias térmicas en la succión por calentamiento y en la descarga por enfriamiento, fugas internas, pérdidas mecánicas, eléctricas y pérdidas al ambiente.…”

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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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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Semi-empirical modelling of a variable speed scroll compressor with vapour injection

Cited by 43 publications

References 21 publications

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

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

Variable Frequency Drive Applications in HVAC Systems

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

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