Energy efficiency analysis of double suction centrifugal pumps with new impeller geometry

MATEC Web of Conferences Pub Date : 2023-01-01 DOI:10.1051/matecconf/202338701007

Amandyk Tuleshov, Madina Issametova, Azhayev Askar, Tanysabayeva Akzhan

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Abstract

The development of energy saving determines the importance of improving the efficiency of equipment that uses most of the energy consumed. Pumping equipment is one of the most significant consumers of electrical energy. Thus, the drive of pumps (mainly centrifugal pumps) at some CHPPs consumes up to 10 % of the total energy produced at the plant [1]. In general, the total share of consumption of pumping equipment operated in industry, according to various estimates, is from 15 to 25 % of all generated electricity. In this paper, a new impeller configuration (with variable blade curvature) for double suction centrifugal pumps with higher efficiency was proposed. The head and efficiency of centrifugal pump with different vane grids were compared. The main conclusions are that the static pressure and relative velocity have increased in the modernised impeller, leading to an increase in hydraulic and overall efficiency, the kinetic energy of turbulence has less pulsation. the operating point of the pump has shifted. In spite of the fact that the average integral efficiency has increased in the modified pump, the operating point of the pump is shifted to the side of decreasing flow by 1.5%. The theory of the variable curvature vane system was verified by computational methods.

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新型叶轮结构双吸离心泵的能效分析

节能的发展决定了提高耗能最大的设备效率的重要性。泵送设备是消耗电能最多的设备之一。因此，在一些热电联产电站中，泵(主要是离心泵)的驱动消耗了电厂总能量的10%[1]。一般来说，根据各种估计，工业中运行的泵送设备的总消耗量占所有发电量的15%至25%。本文提出了一种新的叶轮结构(可变叶片曲率)，用于提高双吸离心泵的效率。比较了不同叶片栅格的离心泵扬程和效率。主要结论是，现代化叶轮的静压和相对速度增加，导致水力效率和总效率的提高，湍流动能的脉动较小。泵的工作点移位了。虽然改进后的泵的平均整体效率有所提高，但泵的工作点向流量减少的一侧偏移了1.5%。用计算方法验证了变曲率叶片系统的理论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

MATEC Web of Conferences

自引率

0.00%

发文量

342

审稿时长

6 weeks

期刊介绍： MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.