Investigation on the modifications of the suction flow passage in a scroll refrigeration compressor

Sun, Shu-Ming; Wang, Xianwen; Guo, Pengcheng; Song, Zhe

doi:10.1016/j.applthermaleng.2020.115031

Cited by 22 publications

(6 citation statements)

References 22 publications

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“…A O,ddd1 , the sector type region, is expressed in Equation (35). The volume of V O,ddd1 was calculated according to Equation (37).…”

Section: Outer Area a O D1mentioning

confidence: 99%

“…The development of geometry theory contributes to the scroll machine predesign accuracy and efficiency [27]. Further, to evaluate the performance of the predesigned prototype, several types of research approaches have been adapted including experiments [28,29], thermodynamic modeling [30,31], and CFD simulation modeling of dimensions 1D [32,33], 2D [34,35], and 3D [36,37]. Due to the nonignorable consumption of time and experimental materials, researches of scroll machine experiments were very few.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Geometric Theoretical Model and Throughflow Prediction Method for a CO2 Scroll Compressor of Automotive Air Conditioning System

Song

et al. 2023

International Journal of Energy Research

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The scroll-type compressor is the core component of the refrigeration system using the natural refrigerant carbon dioxide. An accurate scroll geometric theoretical model is essential for evaluating and enhancing compressor performance. The present paper proposed and validated an improved geometric theoretical model of a scroll compressor. A vector triangle method-based general piecewise function describes precisely the volume variation of the working chambers, based on which the transient throughflow modeling and performance evaluation of a carbon dioxide scroll compressor were conducted. The mechanisms and influencing factors of the suction precompression and the asymmetry discharging were analyzed. The results indicate that the strength of the suction precompression is mainly influenced by the suction vacuum under different rotating speeds, partly associated with the tangential leakage under low rotating speeds. The increasing initial suction pressure contributes to the linear raising of the pressure difference between suction initial and ending pressures, decreasing the precompression extension slightly. The variation of the discharge throughflow areas of two symmetric discharge chambers dominates the pressure asymmetry, which is gradually eliminated by the overlapping throughflow area. Compared with the circular discharge structure, the waist-shape port reduces the pressure asymmetry degree and shortens its duration.

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“…A O,ddd1 , the sector type region, is expressed in Equation (35). The volume of V O,ddd1 was calculated according to Equation (37).…”

Section: Outer Area a O D1mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Geometric Theoretical Model and Throughflow Prediction Method for a CO2 Scroll Compressor of Automotive Air Conditioning System

Song

et al. 2023

International Journal of Energy Research

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“…The scroll wrap was modified by the circular arc add line. Sun et al 9 proposed six modification schemes to improve the compressor performance, and conducted three-dimensional numerical simulations to investigate the flow fields of modified scroll compressors. Mojiri et al 10 studied the volume of gas chambers as a function of scroll rotation angle.…”

Section: Introductionmentioning

confidence: 99%

Geometric design and analysis of scroll compressors with a novel circular involute modified wrap

Wang

Han

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The scroll geometry in the central region of the scroll wrap plays a crucial role in determining the working performance of scroll compressors. In order to improve the comprehensive performance of scroll wraps, in this study, a novel circular involute modified wrap was put forward, in which the central and peripheral wrap profiles were connected by a circular involute in the central regions, so that a pair of fully smooth and correct meshing scroll wraps were generated. A geometric model of the involute modified wrap were proposed, and then equations of the wrap profiles and relations between geometric parameters were derived. Effects of geometric parameters on the shape and performance of the involute modified wrap were discussed in detail. Furthermore, the compression ratio of the involute modified wrap was studied by numerical simulation, and the deformation of the involute modified wrap produced by temperature load and pressure load was calculated, compared with the conventional circular arc modified wrap under the same geometric shape of scroll compressors. Study results demonstrate that the proposed involute modified wrap may simultaneously improve the compression ratio and the strength of wrap head for scroll compressors; in addition, the involute modified wrap is good for design flexibility, and therefore is superior to the circular arc modified wrap.

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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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Investigation on the modifications of the suction flow passage in a scroll refrigeration compressor

Cited by 22 publications

References 22 publications

An Improved Geometric Theoretical Model and Throughflow Prediction Method for a CO2 Scroll Compressor of Automotive Air Conditioning System

An Improved Geometric Theoretical Model and Throughflow Prediction Method for a CO2 Scroll Compressor of Automotive Air Conditioning System

Geometric design and analysis of scroll compressors with a novel circular involute modified wrap

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

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