Numerical and Experimental Investigation of Pressure Losses at Suction of a Twin Screw Compressor

Arjeneh, M.; Kovačević, Ahmed; Rane, Sham; Manolis, M; Stošić, Nikola

doi:10.1088/1757-899x/90/1/012006

Cited by 19 publications

(8 citation statements)

References 3 publications

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“…As the measurement of flow velocity inside the twin-screw compressor is difficult as compared to other flow properties such as local pressures, it is important to understand the pressure variations in the suction area. Arjeneh et al 43 conducted experiments at different operating conditions to measure the local pressure loss at 23 different locations in the suction plenum as shown in Figure 8. The authors also compared the tested results with the CFD model results.…”

Section: Name Of Investigator Approach Key Findings/resultsmentioning

confidence: 99%

A critical review of the experimental studies related to twin screw compressors

Patel

Lakhera²

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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Twin-screw compressors are often used for generating compressed fluids useful for various industrial applications, thereby necessitating the need for evolving energy efficient designs. In the past few decades, several experimental studies were conducted to understand the phenomenon inside the twin-screw compressor, thereby leading to performance improvement and design optimization. The present study summarizes the various experimental investigations on screw compressors which include analysis related to various parameters such as leakages, pulsations, noise, liquid injection, capacity control, pressure losses, optimization of rotor, indicator diagrams, etc. In order to improve the understanding of thermo-fluid-solid interaction phenomenon in twin-screw compressor, further investigations using visualization techniques such as LDV/PIV are suggested. As the leakages within the screw compressor are complex phenomenon, it is suggested to explore simplified experimental and numerical studies by simulating the leakages using equivalent nozzles and developing appropriate leakage models.

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Section: Name Of Investigator Approach Key Findings/resultsmentioning

confidence: 99%

A critical review of the experimental studies related to twin screw compressors

Patel

Lakhera²

2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…The experiment obtained the adiabatic efficiency and volumetric efficiency of the compressor where the simulation results were very similar to the experimental results. Arjeneh [16] used the CFD method to study local pressure variation inside the suction plenum of the screw compressor, described the measurement method of related experiments, and verified the application of CFD technology in the research of screw machinery. Rane [17] studied the influence of CFD solvers on the performance prediction of a twin-screw compressor.…”

Section: Introductionmentioning

confidence: 98%

CFD Simulation and Experimental Study of Working Process of Screw Refrigeration Compressor with R134a

Huang

Zhang

et al. 2019

Energies

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Twin-screw refrigeration compressors have been widely used in many industry applications due to their unique advantages. The performance of twin-screw refrigeration compressors is generally predicted by one-dimensional numerical simulation or empirical methods; however, the above methods cannot obtain the distribution of the fluid pressure field and temperature field inside the compressor. In this paper, a three-dimensional model was established based on the experimental twin-screw refrigeration compressor. The internal flow field of the twin-screw compressor was simulated by computational fluid dynamics (CFD) software using structured dynamic grid technology. The flow and thermodynamic characteristics of the fluid inside the compressor were analyzed. The distribution of the internal pressure field, temperature field, and velocity field in the compressor were obtained. Comparing the P-θ indicator diagram and the performance parameters of the compressor with the experimental results, it was found that the results of the three-dimensional numerical simulation were consistent with the experimental data. The maximum error was up to 2.578% on the adiabatic efficiency at the partial load working condition. The accuracy of the 3D numerical simulation of the screw compressors was validated and a new method for predicting the performance of twin-screw refrigeration compressors was presented that will be helpful in their design.

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“…The clearances between the rotors were analyzed to improve the flow quality of the machine [11]. A new 3-D mesh model is developed for screw compressors [12]. The effect of compression on the deformation of the screw compressor has been determined [13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of flow characteristics of cylindrical and helical type multi-lobe roots blower

Tran

Nguyen

2023

Eureka: PE

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Roots blower is a positive displacement machine that has the advantage of a larger flow than conventional blowers. Roots blowers are widely used in industrial production such as chemicals, food, medical, etc. However, during actual operation, this type of machine often achieves low performance. One of the issues that greatly affect performance is the flow characteristics of the blower. Flow characteristics include factors related to flow rate, pressure, and flow phenomena in the blower chamber. Flow characteristic analysis is a complex problem in hydraulic machines. Flow analysis helps to investigate the motion of the flow to design high-performance machines. This study uses a mathematical model of gear theory to design the rotor profile with cylindrical and helical lobes of the multi-lobe Roots blower. The rotor profile is formed on the principle that the ellipse rolls without slipping on the base circle. On the basis of the mathematical model of the rotor profile, the paper compares the flow rate and pressure characteristics of the two blowers. The fluid dynamics analysis model was built on ANSYS software. The structural grid model is also built to increase the computational efficiency of the mathematical model. The lobes are embedded and rotated in the blower chamber. The results show that with the same radial and axial dimensions, the cylindrical lobe has a larger flow. However, the helical lobe has a more stable flow quality than the cylindrical lobe (15.2 % less flow fluctuation). In terms of pressure, the helical lobe type has a higher pressure than the cylindrical lobe type. In addition, the helical lobe type also reduces the influence of eddy currents acting on the blower chamber walls and rotors. That results in increased blower efficiency. The results of the paper will be a reliable basis for reducing time in the development of multi-lobe Roots blowers with high performance

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Numerical and Experimental Investigation of Pressure Losses at Suction of a Twin Screw Compressor

Cited by 19 publications

References 3 publications

A critical review of the experimental studies related to twin screw compressors

A critical review of the experimental studies related to twin screw compressors

CFD Simulation and Experimental Study of Working Process of Screw Refrigeration Compressor with R134a

Analysis of flow characteristics of cylindrical and helical type multi-lobe roots blower

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