Modelling hermetic compressors using different constraint equations to accommodate multibody dynamics and hydrodynamic lubrication

Estupinan, Edgar Alberto; Santos, Ilmar

doi:10.1590/s1678-58782009000100006

Cited by 8 publications

(3 citation statements)

References 10 publications

(9 reference statements)

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“…The gas in the inter-stage cooler also satisfies the first law of thermodynamics (Equation ( 14)), gas state equation (Equation ( 15)) and conservation equation (Equation ( 3)). The relationships among parameters satisfy Equation ( 7) -Equation (10).…”

Section: Inter-stage Coolermentioning

confidence: 99%

“…Tojo et al [9] investigated the dynamic of variable stroke swash plate compressors and established a mathematical model to improve the inertia balance. Estupinan and Santos [10] studied the dynamic characteristics of multi-body dynamics and proposed the parameter matching method based on vibration reduction. Zhang et al [11] studied and improved the dynamic balance of the compressor.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of swash plate multistage compressor based on dynamics

Liu,

Tong,

Gao

2024

J. Phys.: Conf. Ser.

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The swash plate compressor can provide high-pressure gas through multistage compression using its different cylinders, which is an ideal structure for high-pressure compressor miniaturization. The swash plate multistage compressor (SPMC) with variable sections cylinder and inter-stage cooler is proposed and its complex structure results in complex multi-body dynamics and thermodynamics. To research the dynamic characteristics of SPMC, the dynamic model of SPMC is established, which includes the thermodynamics of compression and inter-stage cooler and the dynamics of all the check valves and pistons. The optimization objective function considering the dynamic characteristics and efficiency is proposed. The constraint conditions and sensitivity of the optimized parameters are studied and the final parameters are achieved through an optimization algorithm. Based on the above work, it can be found that the optimization way has high convergence and accuracy, and the comprehensive performance of SPMC is improved significantly.

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Section: Inter-stage Coolermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of swash plate multistage compressor based on dynamics

Liu,

Tong,

Gao

2024

J. Phys.: Conf. Ser.

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show abstract

“…For an eight-pole heteropolar magnetic bearing, the angle is π 8 . Equations (32) and (33) are based on the assumptions that the rate of change of electric flux dΦ E dt (change of current with time) contributes insignificantly to the magnetic field (magnetostatic approximation) thus eddy-current effects are neglected.…”

Section: (A) Definition Of the Inertial And Moving Reference Systemsmentioning

confidence: 99%

Magnetically suspended flywheel in gimbal mount – Nonlinear modelling and simulation

Dagnæs-Hansen

Santos

2018

Journal of Sound and Vibration

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Analysis of Analytical Hydrodynamic Bearing Models on a Reciprocating Compressor

Okabe

Izuka

Resch³

2018

Mechanisms and Machine Science

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Modelling hermetic compressors using different constraint equations to accommodate multibody dynamics and hydrodynamic lubrication

Abstract: In this work, the steps involved for the modelling of a reciprocating linear compressor are described in detail. The dynamics of the mechanical components are described with the help of multibody dynamics (rigid components)

Cited by 8 publications

References 10 publications

Optimization of swash plate multistage compressor based on dynamics

Optimization of swash plate multistage compressor based on dynamics

Magnetically suspended flywheel in gimbal mount – Nonlinear modelling and simulation

Analysis of Analytical Hydrodynamic Bearing Models on a Reciprocating Compressor

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