Regenerative flow pumps, blowers and compressors – A review:
21 May 2021-Vol. 235, Iss: 8, pp 1992-2013
TL;DR: In this paper, a detailed and objective review of regenerative flow turbomachines, namely pumps, blowers and compressors, is presented, including design and operating parameters, and their characteristics.
Abstract: This paper presents a detailed and objective review of regenerative flow turbomachines, namely pumps, blowers and compressors. Several aspects of turbomachines like design and operating parameters,...
Citations
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01 Jul 2022
TL;DR: In this paper , the core hydrogen recirculation components of fuel cell vehicles, including mechanical hydrogen pumps, ejectors, and gas-water separators, are reviewed in order to understand the problems and challenges in the simulation, design, and application of these components.
Abstract: Hydrogen energy and fuel cell technology are critical clean energy roads to pursue carbon neutrality. The proton exchange membrane fuel cell (PEMFC) has a wide range of commercial application prospects due to its simple structure, easy portability, and quick start-up. However, the cost and durability of the PEMFC system are the main barriers to commercial applications of fuel cell vehicles. In this paper, the core hydrogen recirculation components of fuel cell vehicles, including mechanical hydrogen pumps, ejectors, and gas–water separators, are reviewed in order to understand the problems and challenges in the simulation, design, and application of these components. The types and working characteristics of mechanical pumps used in PEMFC systems are summarized. Furthermore, corresponding design suggestions are given based on the analysis of the design challenges of the mechanical hydrogen pump. The research on structural design and optimization of ejectors for adapting wide power ranges of PEMFC systems is analyzed. The design principle and difficulty of the gas–water separator are summarized, and its application in the system is discussed. In final, the integration and control of hydrogen recirculation components controlled cooperatively to ensure the stable pressure and hydrogen supply of the fuel cell under dynamic loads are reviewed.
14 citations
TL;DR: In this article, a new type of axial turbomachinery based on the traditional airfoil using the equal-variable circulation method was designed to improve the aerodynamic performance of the axial flow fan.
Abstract: Aiming at improving the aerodynamic performance of the axial turbomachinery, a new type of blade is obtained based on the traditional airfoil using the equal-variable circulation method. Taking the axial flow fan as the research object, this paper designs a new type of turbomachinery by changing the design method and blade forward sweep. The aerodynamic performance of the fan is simulated and compared with the experimental data. The numerical results show that the equal circulation design method can improve the aerodynamic performance of the blade roots and the variable circulation design method can improve the aerodynamic performance of the blade tips. By adopting the design method of equal variable circulation, the total pressure of the experimental fan is increased by about 4% on the premise of keeping the efficiency unchanged. The forward-swept blades with equal-variable circulation design are also obtained by changing the center of the gravity stacking line. At low flow rate, the efficiency of the experimental fan can be increased by 7.5%, and the flow working range of the experimental fan can be expanded. Under high flow rate, it reduces the restriction of the blade on the tip air flow and slightly reduces the fluidity.
1 citations
TL;DR: In this paper , the authors provide simple design correlations for systematically designing regenerative flow machines viz. pumps, blowers, and compressors, which are known to be simple in construction but complex in flow characteristics.
Abstract: Regenerative flow machines are known to be simple in construction but complex in flow characteristics. Due to this reason, the design of these machines has been primarily esoteric, and hence its performance heavily relies on the experience and expertise of the designer. Since there are no established rules of thumb for designing them, this paper attempts to provide simple design correlations for systematically designing regenerative flow machines viz. pumps, blowers, and compressors. Three different impeller designs have been considered, namely the (i) single-side vane impeller, (ii) double-side vane impeller, and (iii) peripheral vane impeller, for the three types of machines. More than ten design parameters have been considered for sizing the machines. Experimental and computational data available in open literature have been used to obtain physically meaningful correlations in simple form, and require minimal and practically available inputs. Fluid properties and practical constraints were taken into consideration while deriving the correlations. Constants in the correlations were obtained using least square regression analysis. The accuracy of the obtained correlation is determined by the correlation coefficient. The deviation obtained using the derived correlations varied from 10 to 25%. A consolidated set of correlations has been presented, which will be helpful in making a preliminary design before CFD simulation, design optimization, and prototype building. Finally, the obtained correlations have been used to demonstrate the design of a regenerative flow pump.
1 citations
Journal Article•
1 citations
TL;DR: In this article, the structural integrity of regenerative flow pumps and compressors is investigated using the ANSYS FLUENT simulation solver, where the simulation is performed with pump running at 2900-rpm and compressor with 100,000-rpm to achieve a pressure ratio of about 3 in both cases.
References
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83 citations
01 Jan 1955
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Additional excerpts
...al.(13) and highlighted its shortcomings....
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01 May 2003
TL;DR: In this article, an improved and modified theoretical model was proposed to explain the change in the circulatory velocity caused by variation in the channes of a regenerative flow pump (RFP).
Abstract: The regenerative flow pump (RFP) and regenerative flow compressor (RFC) are turbomachines capable of developing high pressure ratios in a single stage. They are also known by other names, such as peripheral, side channel, turbine, traction and vortex compressor/pump. Even though the efficiency of RFP/RFC is usually less than 50 per cent based on past design experience, they have found wide applications in automotive and aerospace fuel pumping, booster systems, water supply, agricultural industries, shipping and mining, chemical and food stuffs industries, and regulation of lubrication and filtering. RFCs have been proposed for use in hydrogen gas pipelines and as helium compressors for cryogenic applications in space vehicles. RFTs are used as accessory drives on aircraft and missiles. With the aim of improving the performance and efficiency of an RFP, this paper proposes an improved and modified theoretical model that can explain the change in the circulatory velocity caused by variation in chann...
61 citations
Book•
01 Jan 2010
TL;DR: Turbines Compressors and Fans, Turbines Compressor and Fans (TCF), Turbine Compressor, Fans and Fans as mentioned in this paper, TCS and Fans.
Abstract: Turbines Compressors and Fans , Turbines Compressors and Fans , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
57 citations
"Regenerative flow pumps, blowers an..." refers background in this paper
...Impeller size (outer diameter including the blade tip) determines the pressure rise in the machine as it indirectly fixes the blade tip speed, a parameter which plays an important role in energy transfer.(21) Different sizes ranging from 20mm to 320mm have been found in the literature....
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...Also, from the stress point of view, straight blades are capable of withstanding centrifugal stresses compared to curved blades.(21) Figure 2(a) shows straight radial, backward swept, forward swept, chevron type of blades and Figure 2(b) shows the S-shaped blades....
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TL;DR: In this article, a theoretical model of a regenerative blower used for the hydrogen recirculation of a Proton Exchange Membrane (PEM) fuel cell for automotive applications has been implemented and validated by means of experimental data.
51 citations