Title:	Energy Consumption Comparison of a Single Variable-Speed Pump and a System of Two Pumps: Variable-Speed and Fixed-Speed
Authors:	Oshurbekov, Safarbek Kazakbaev, Vadim Prakht, Vladimir Dmitrievskii, Vladimir Gevorkov, Levon
Citation:	OSHURBEKOV, S. KAZAKBAEV, V. PRAKHT, V. DMITRIEVSKII, V. GEVORKOV, L. Energy Consumption Comparison of a Single Variable-Speed Pump and a System of Two Pumps: Variable-Speed and Fixed-Speed. Applied Sciences, 2020, roč. 10, č. 24, s. 1-14. ISSN: 2076-3417
Issue Date:	2020
Publisher:	MDPI
Document type:	článek article
URI:	2-s2.0-85103860760 http://hdl.handle.net/11025/54920
ISSN:	2076-3417
Keywords in different language:	centrifugal pump;energy eciency;induction motor;throttling control;variable speed control
Abstract in different language:	The energy efficiency of a multi-pump system consisting of two low-power (0.75 kW) pumps operating in parallel mode and a single-pump mechanism (1.5 kW) is compared in this study. For this purpose, mathematical models, experimental data, and data retrieved from the manuals provided by the pump manufacturers are used. The single-pump system is fed by a single variable speed drive. A multi-pump system running in parallel mode consists of two pumps. One of them is driven by an induction motor connected directly to the electrical grid and equipped with a throttle. Another pump is actuated by an induction motor fed by a variable speed drive. The flowrate of the liquid in the multi-pump is controlled with the help of speed variation and throttling. In the case of the single-pump system the conventional speed control method is applied during the analysis. For both pump system topologies, the daily and annual energy consumption is obtained. As a result of conducted calculations, it was shown that the multi-pump provides 29.8% savings in comparison to the single-pump system in the case of a typical flowrate profile.
Rights:	© The Author(s)
Appears in Collections:	Články / Articles (RICE) OBD

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