The application of nozzles for the attenuation of volumetric compressor pressure pulsation

Młynarczyk, Przemysław; Cyklis, Piotr

doi:10.1016/j.ijrefrig.2018.03.022

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…Similar issues appear at screw compressors [17][18][19]. The screw compressor produces an approximately constant flow compared to reciprocating compressors.…”

Section: Literature Overviewmentioning

confidence: 86%

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

Pana

Dinu

2021

MATEC Web Conf.

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The pulsation bottles are mounted at the inlet and outlet of / from the reciprocating compressor cylinders to even out the gas parameters (pressure and temperature). They ensure stable working conditions in the compressor cylinders and eliminate / reduce vibrations. The sizing of the pulsation bottle is done based on the geometric parameters of the compressor, the volume efficiency and working pressure. The use of a dynamic model made in the LMS Amesim program allows the study of a compressor with a set of pulsation bottles at the modification of: the pressure and temperature at the inlet / outlet of the compressor, the speed of the compressor the volume of the dead space and blocking or removing of the valves. The model includes the compressor cylinder with the corresponding dead spaces, the compressor valves, the suction and discharge pipelines and crank connecting rod mechanism. The simulation takes into account of the: gas composition, temperature and pressure in the system. The variation of the pressure in the bottles can be checked under these conditions. The values of the disturbing forces for a range of working and adjustment parameters can be obtained, values that can be used in a dynamic analysis according to API 618.

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“…Similar issues appear at screw compressors [17][18][19]. The screw compressor produces an approximately constant flow compared to reciprocating compressors.…”

Section: Literature Overviewmentioning

confidence: 86%

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

Pana

Dinu

2021

MATEC Web Conf.

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“…The research on the damping of pressure pulsations, allowed to conclude that nozzles with a hyperboloidal shape suppress pressure pulsations well. At the same time they do not cause a large increase in compression power 1 , 17 , 18 . For this reason, this shape of the printed nozzle was chosen for comparison with other, more complex shapes.…”

Section: Geometry Of Tested Nozzlesmentioning

confidence: 93%

Assessment of the impact of shaped nozzles installed inside the pipeline on the energy efficiency of compressed gas systems

Młynarczyk,

Brewczyński,

Krajewska-Śpiewak

et al. 2023

Sci Rep

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Pressure pulsations and vibrations generated in gas discharge pipelines are one of the main causes of failure in a compressed gas system. Installation of shaped nozzles in the compressor discharge manifold is one of the new ideas to minimize this phenomenon. It has been proven that shaped nozzles technology is able to minimize the unfavorable phenomena of pressure pulsation and thus the pipeline vibration. The production of such components using 3D printing techniques is a very good solution, as they have complicated shapes and are individually produced for a specific installation. The world is currently struggling with an excess of waste and a shortage of energy. Therefore, modern technology should be part of the sustainable development strategy, according to which the amount of energy consumed during the processes should be reduced. This article presents the influence of shaped nozzles on the specific compression power mounted in the discharge manifolds of two different compressors: reciprocating and screw. This influence can also be estimated by a conceptual model presented in the article. Based on the values of specific compression power, obtained during carried out research, it can be concluded that 3D printed nozzles may have a minor impact on the energy efficiency of compression depending on their shape complexity.

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“…A three-dimensional (3D) CFD model considering the interaction between the valve motion and pressure pulsation was developed by Zhao et al 14 Several researchers have proposed and optimized suppression devices for gas pulsation. [15][16][17][18][19] The traditional attenuation devices for gas pulsation include nozzles, Helmholtz resonators, and buffer tanks. The perforated tube was recently proposed to reducing the gas pulsation.…”

Section: Introductionmentioning

confidence: 99%

Fast algorithm for calculating the pressure pulsation in a reciprocating compressor system with stepless capacity regulation

Yang

Jia

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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Stepless capacity regulation through delayed closure of suction valves plays an important role in energy conservation for reciprocating compressors. Serious gas pulsation usually occurs with a suction valve unloader, and its analysis and suppression is a challenge owing to the varied components of the pulsation excitation under different conditions. In this study, a fast algorithm was proposed to calculate the gas pulsation of a compressor system with stepless capacity regulation and was further incorporated into the frequency-domain modeling of the gas pulsation. A test rig was constructed, and the model was experimentally verified. The dynamic pressure at positions in the suction and discharge valve chambers was measured, as the compressor capacity was varied by changing the closing time of the suction valves. The experimental data were compared with the simulated results and indicated a good agreement. The results showed that the suction valve unloader had a negative impact on the gas pulsation in the suction pipeline system. The pressure pulsation of the main excitation frequency increased in the suction pipeline system and decreased in the discharge pipeline, as the opening time of the suction valve increased.

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The application of nozzles for the attenuation of volumetric compressor pressure pulsation

Cited by 13 publications

References 18 publications

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

Assessment of the impact of shaped nozzles installed inside the pipeline on the energy efficiency of compressed gas systems

Fast algorithm for calculating the pressure pulsation in a reciprocating compressor system with stepless capacity regulation

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