Experimental study on multi-stage gas-liquid booster pump for working fluid pressurization

Wu, Tengma; Liu, Jianhua; Zhang, Liang; Xu, Xiaojin

doi:10.1016/j.applthermaleng.2017.07.159

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…Meanwhile, the bubbles and water are regarded as incompressible media, and the interphase force only considers the drag force calculated by the Schiller-Norman model throughout the simulation process. Wu et al (2017) proposed to use the high-pressure gas generated in the system evaporator to drive a multi-stage gas-liquid booster instead of an electrical working fluid pump which can improve the performance of the organic Rankine cycle system. Zhang et al (2017) conducted an experimental study on the internal flow characteristics of the side-channel pump under the gas-liquid two-phase flow conditions and analyzed the influence of the blade suction angle on the head and efficiency under different inlet air volume fractions.…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristic Analysis of the Self-Priming Pump Based on the Population Balance Model

Chang

Hong²,

Yu³

et al. 2022

Front. Energy Res.

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Self-priming pumps, as important two-phase fluid machinery, are widely used in disaster relief and emergency fields. The flow characteristics of the air–liquid two-phase fluid play an essential role in the self-priming pump performance. However, the traditional simulation employed the single-diameter bubbles for analysis, which cannot reflect the internal flow field characteristics. Therefore, in this article, the Population Balance Model (PBM) is employed, which divides the bubble into different diameter groups, and the collision and coalescence between the bubble are considered in the calculation to investigate the influence of different air voids and flow conditions on the performance self-priming centrifugal pumps. The result shows that the frequency of bubble coalescence at the shroud is higher, which is conducive to the formation of large-sized bubbles. Meanwhile, the increment of flow conditions has a significant effect on reducing the pressure pulsation of the gas–liquid two-phase flow, while the improvement of the air voids not only destroys the instability and asymmetry of the internal flow of the two-phase flow but also aggravates the amplitude of pressure pulsation, increasing the surface loading of the blade and radial force. Therefore, this article can provide a certain theoretical reference for the study of air–liquid two-phase flow characteristics of self-priming centrifugal pumps.

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Section: Introductionmentioning

confidence: 99%

Flow Characteristic Analysis of the Self-Priming Pump Based on the Population Balance Model

Chang

Hong²,

Yu³

et al. 2022

Front. Energy Res.

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“…Moreover, the current studies on the multiphase pumps mainly focus on the macroscopic performances and the flow fields of the pumps, 10 , 11 including the external characteristic, 12 , 13 the pressure pulsation, 14 , 15 and the main flow in the working cavities. 16 , 17 These research works have contributed to the rapid development of the multiphase pumps.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental studies of gas–liquid flow and pressure drop in multiphase pump valves

Zhang

Luo

2020

Science Progress

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A numerical and experimental study was carried out to investigate the two-phase flow fields of the typical three valves used in the multiphase pumps. Under the gas volume fraction conditions in the range of 0%–100%, the three-dimensional steady and dynamic two-phase flow characteristics, pressure drops, and their multipliers of the ball valve, cone valve, and disk valve were studied, respectively, using Eulerian–Eulerian approach and dynamic grid technique in ANSYS FLUENT. In addition, a valve test system was built to verify the simulated results by the particle image velocimetry and pressure test. The flow coefficient CQ (about 0.989) of the disk valve is greater than those of the other valves (about 0.864) under the steady flow with a high Reynolds number. The two-phase pressure drops of the three valves fluctuate in different forms with the vibration of the cores during the dynamic opening. The two-phase multipliers of the fully opened ball valve are consistent with the predicted values of the Morris model, while those of the cone valve and disk valve had the smallest differences with the predicted values of the Chisholm model. Through the comprehensive analysis of the flow performance, pressure drop, and dynamic stability of the three pump valves, the disk valve is found to be more suitable for the multiphase pumps due to its smaller axial space, resistance loss, and better flow capacity.

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“…Aleksandra et al [20] integrated that the use of different refrigerants can produce different pump work. Wu et al [21] utilized a booster pump instead of a common working pump to optimize system characteristics. Meng et al [22] investigated the performance of the centrifugal pump applied to the engine exhaust recovery ORC device and found that the total efficiency of the pump was 15-65.7%.…”

Section: Introductionmentioning

confidence: 99%

Investigating the System Behaviors of a 10 kW Organic Rankine Cycle (ORC) Prototype Using Plunger Pump and Centrifugal Pump

et al. 2020

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Based on a 10-kW organic Rankine cycle (ORC) experimental prototype, the system behaviors using a plunger pump and centrifugal pump have been investigated. The heat input is in the range of 45 kW to 82 kW. The temperature utilization rate is defined to appraise heat source utilization. The detailed components' behaviors with the varying heat input are discussed, while the system generating efficiency is examined. The exergy destruction for the four components is addressed finally. Results indicated that the centrifugal pump owns a relatively higher mass flow rate and pump isentropic efficiency, but more power consumption than the plunger pump. The evaporator pressure drops are in the range of 0.45-0.65 bar, demonstrating that the pressure drop should be considered for the ORC simulation. The electrical power has a small difference using a plunger pump and a centrifugal pump, indicating that the electric power is insensitive on the pump types. The system generating efficiency for the plunger pump is approximately 3.63%, which is 12.51% higher than that of the centrifugal pump. The exergy destruction for the evaporator, expander, and condenser is almost 30%, indicating that enhancing the temperature matching between the system and the heat (cold) source is a way to improve the system performance.

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Experimental study on multi-stage gas-liquid booster pump for working fluid pressurization

Cited by 7 publications

References 24 publications

Flow Characteristic Analysis of the Self-Priming Pump Based on the Population Balance Model

Flow Characteristic Analysis of the Self-Priming Pump Based on the Population Balance Model

Numerical and experimental studies of gas–liquid flow and pressure drop in multiphase pump valves

Investigating the System Behaviors of a 10 kW Organic Rankine Cycle (ORC) Prototype Using Plunger Pump and Centrifugal Pump

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