Geometric correlation of discharge coefficients for discharge valve system in rolling piston rotary compressor

Min, Byungchae; Na, Sangkyung; Yang, Jangsik; Choi, Gyung‐Min

doi:10.1007/s12206-018-0745-0

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…They reported that the maximum impact stress was found to increase in the torsional direction, and the level of the torsional movement was significantly affected by the geometry of the discharge port and the mounting method of the valve reed. Later, Min et al [74] proposed an empirical correlation of the discharge coefficient to calculate the effective area. This correlation was derived based on the CFD simulation that considers the influence of geometric parameters, including the valve lift, the valve size, and the port dimensions.…”

Section: Valve Dynamic and Port Characteristicsmentioning

confidence: 99%

A Literature Review of the Positive Displacement Compressor: Current Challenges and Future Opportunities

Lu,

Sultan,

Phung

2023

Energies

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Positive displacement compressors are essential in many engineering systems, from domestic to industrial applications. Many studies have been devoted to providing more insights into the workings and proposing solutions for performance improvements of these machines. This study aims to present a systematic review of published research on positive displacement compressors of various geometrical structures. This paper discusses the literature on compressor topics, including leakage, heat transfer, friction and lubrication, valve dynamics, port characteristics, and capacity control strategies. Moreover, the current status of the application of machine learning methods in positive displacement compressors is also discussed. The challenges and opportunities for future work are presented at the end of the paper.

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Section: Valve Dynamic and Port Characteristicsmentioning

confidence: 99%

A Literature Review of the Positive Displacement Compressor: Current Challenges and Future Opportunities

Lu,

Sultan,

Phung

2023

Energies

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“…The earliest dual cylinder rolling piston design was presented by Sakaino et al [196] in 1986. Since then, various engineering aspects of the dual cylinder rolling piston have been studied, which included dynamics [197], optimization [198], discharge flow [199], and lubrication [200]. With the phase out of harmful refrigerants, studies on dual cylinder performance [201] and lubrication [202,203] with new refrigerants were also carried out.…”

Section: Dual Cylinder and Two-stage Rolling Piston Compressorsmentioning

confidence: 99%

A Review on Sliding Vane and Rolling Piston Compressors

Ooi

2021

Machines

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Rotary compressors have been employed in heating and cooling for more than a century and are ubiquitous in daily life but there has not been any comprehensive record of their development and technological advances. This review paper attempts to provide a comprehensive account of the advances in R&D and design evolution of these rotary compressors since their inception, namely the sliding vane compressor, rolling piston compressor, and their design variants in open literature. This is to showcase the current state-of-the-art for these compressors so that researchers can use it as a basis for future work. Based on authors’ insight, inter-disciplinary research combined with advancements in ‘disruptive’ technology such as artificial intelligence and advancements in additive manufacturing might be a promising research direction to bring about improvements in rotary compressor performance to meet mankind’s growing needs for cooling and heating applications.

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“…Tongue spring valves, commonly used in small and medium-sized piston compressors due to their simple structure and small clearance volume, are employed in solenoid direct drive air compressors as exhaust valves. [1] In the previous century, researchers primarily investigated valve discs by solving differential equations for valve disc and gas state in the cylinder [2][3]. With the advancement of computer technology, computational uid dynamics (CFD) software is now frequently used to simulate gas ow and the stress and deformation state of the valve plate.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and analysis of electromagnetic direct drive air compressor

Guo,

Lu,

et al. 2024

Preprint

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To accurately simulate the motion characteristics of a reed valve and the changes in flow field in an exhaust chamber, a fluid-structure coupling model of an electromagnetic direct drive air compressor during the exhaust process was established and simulated. The alteration of the flow field within the exhaust chamber is under examination. The transient numerical simulation of the flow field in the exhaust procedure is conducted to reduce the computational model's time complexity and provide an immediate analysis of the exhaust processThis paper explores the effects of altering valve lift and relative pressure loss given different valve parameters and exhaust pressure levels. The findings reveal that when the valve plate thickness is 0.2mm and the valve section width is 3.5mm, the airflow hindrance is significantly minimized. With the valve plate unloaded, the gas flow restriction's impact on gas flow is negligible. This paper presents a theoretical basis for designing exhaust valves for electromagnetic direct-drive air compressors.

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Geometric correlation of discharge coefficients for discharge valve system in rolling piston rotary compressor

Cited by 5 publications

References 10 publications

A Literature Review of the Positive Displacement Compressor: Current Challenges and Future Opportunities

A Literature Review of the Positive Displacement Compressor: Current Challenges and Future Opportunities

A Review on Sliding Vane and Rolling Piston Compressors

Mathematical modeling and analysis of electromagnetic direct drive air compressor

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