Experimental study of characteristic curves of centrifugal pumps working as turbines in different specific speeds

被引：280

作者：

Derakhshan, Shahram ^{[1
]}

Nourbakhsh, Ahmad ^{[1
]}

机构：

[1] Univ Tehran, Fac Engn, Dept Mech Engn, Tehran, Iran

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2008年 / 32卷 / 03期

关键词：

pump as turbine; best efficiency point; characteristic curves; specific speed; small hydro-site;

D O I：

10.1016/j.expthermflusci.2007.10.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Pump manufacturers do not normally provide the characteristic curves of their pumps working as turbines. Therefore, establishing a correlation between the performances of direct (pump) and reverse (turbine) modes is essential in selecting the proper machine. In this paper, several centrifugal pumps (N-s < 60 (m, m(3)/s)) were tested as turbines. Using experimental data, some relations were derived to predict the best efficiency point of a pump working as a turbine, based on pump hydraulic characteristics. Validity of the presented method was shown using some referenced experimental data. Two equations were presented to estimate the complete characteristic curves of centrifugal pumps as turbines based on their best efficiency point. Deviation of suggested method from experimental data were considered and discussed. Finally, a procedure was presented for selecting a suitable pump to work as a turbine in a small hydro-site. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：800 / 807

页数：8

共 19 条

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