Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes

Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes

Aim. The comparative analysis of energy consumption, electricity costs during lifetime cycle and payback period of a pump unit with 90 kW 2-pole induction motors, belonging to various energy efficiency classes, feeding directly from power grid. Methods. The examined operating modes aligned with a ty...

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Bibliographic Details
Date:2021
Main Authors: Goman, V.V., Prakht, V.A., Kazakbaev, V.M., Dmitrievskii, V.A., Valeev, E.A., Paramonov, A.S.
Format: Article
Language:English
Ukrainian
Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2021
Subjects:
centrifugal pump
energy efficiency
energy efficiency class
induction motor
throttling control
energy saving
payback period
lifetime cycle
Online Access:http://eie.khpi.edu.ua/article/view/225156
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Journal Title:Electrical Engineering & Electromechanics

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Electrical Engineering & Electromechanics
id eiekhpieduua-article-225156
record_format ojs
institution Electrical Engineering & Electromechanics
baseUrl_str
datestamp_date 2021-02-23T09:10:20Z
collection OJS
language English
Ukrainian
topic centrifugal pump
energy efficiency
energy efficiency class
induction motor
throttling control
energy saving
payback period
lifetime cycle
spellingShingle centrifugal pump
energy efficiency
energy efficiency class
induction motor
throttling control
energy saving
payback period
lifetime cycle
Goman, V.V.
Prakht, V.A.
Kazakbaev, V.M.
Dmitrievskii, V.A.
Valeev, E.A.
Paramonov, A.S.
Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
topic_facet centrifugal pump
energy efficiency
energy efficiency class
induction motor
throttling control
energy saving
payback period
lifetime cycle
центробежный насос
энергоэффективность
класс энергоэффективности
асинхронный электродвигатель
энергосбережение
жизненный цикл
срок окупаемости
дроссельное регулирование
format Article
author Goman, V.V.
Prakht, V.A.
Kazakbaev, V.M.
Dmitrievskii, V.A.
Valeev, E.A.
Paramonov, A.S.
author_facet Goman, V.V.
Prakht, V.A.
Kazakbaev, V.M.
Dmitrievskii, V.A.
Valeev, E.A.
Paramonov, A.S.
author_sort Goman, V.V.
title Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_short Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_full Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_fullStr Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_full_unstemmed Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_sort analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes
title_alt Анализ срока окупаемости модернизированной насосной установки при использовании асинхронных двигателей повышенных классов энергоэффективности
description Aim. The comparative analysis of energy consumption, electricity costs during lifetime cycle and payback period of a pump unit with 90 kW 2-pole induction motors, belonging to various energy efficiency classes, feeding directly from power grid. Methods. The examined operating modes aligned with a typical operating cycle of a pump unit with approximately constant flow rate of 75-110 % of the rated flow. The calculations were based on the pump and induction motors nameplate data, which, in their turn, were based on the manufacturers’ experimental data. Results. The calculations of energy consumption, electricity costs and payback periods of a pump unit with 90 kW 2-pole induction motors, feeding directly from power grid have been performed in the article. The application of induction motors belonging to IE2, IE3 and IE4 energy efficiency classes has been discussed. Practical value. It has been demonstrated, than in case of replacement of an induction motor of energy efficiency class IE2 due to planned retrofit, payback period for an IE4 induction motor is 2.18 years, energy savings within a calculated 20-year operating period are 268MW·h, which makes €41110 in money terms. Under the same conditions, the replacement of an induction motor of energy efficiency class IE2 with an induction motor of energy efficiency class IE3 will allow to save 88 MW·h within a calculated operating period, which, expressed in monetary terms, is €13500 and the payback period is 5.11 years. Thus, the article proves that despite a higher initial price, the choice of an induction motor of energy efficiency class IE4 tends to be more economically advantageous.
publisher National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
publishDate 2021
url http://eie.khpi.edu.ua/article/view/225156
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first_indexed 2025-07-17T11:48:21Z
last_indexed 2025-07-17T11:48:21Z
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spelling eiekhpieduua-article-2251562021-02-23T09:10:20Z Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes Анализ срока окупаемости модернизированной насосной установки при использовании асинхронных двигателей повышенных классов энергоэффективности Goman, V.V. Prakht, V.A. Kazakbaev, V.M. Dmitrievskii, V.A. Valeev, E.A. Paramonov, A.S. centrifugal pump energy efficiency energy efficiency class induction motor throttling control energy saving payback period lifetime cycle центробежный насос энергоэффективность класс энергоэффективности асинхронный электродвигатель энергосбережение жизненный цикл срок окупаемости дроссельное регулирование Aim. The comparative analysis of energy consumption, electricity costs during lifetime cycle and payback period of a pump unit with 90 kW 2-pole induction motors, belonging to various energy efficiency classes, feeding directly from power grid. Methods. The examined operating modes aligned with a typical operating cycle of a pump unit with approximately constant flow rate of 75-110 % of the rated flow. The calculations were based on the pump and induction motors nameplate data, which, in their turn, were based on the manufacturers’ experimental data. Results. The calculations of energy consumption, electricity costs and payback periods of a pump unit with 90 kW 2-pole induction motors, feeding directly from power grid have been performed in the article. The application of induction motors belonging to IE2, IE3 and IE4 energy efficiency classes has been discussed. Practical value. It has been demonstrated, than in case of replacement of an induction motor of energy efficiency class IE2 due to planned retrofit, payback period for an IE4 induction motor is 2.18 years, energy savings within a calculated 20-year operating period are 268MW·h, which makes €41110 in money terms. Under the same conditions, the replacement of an induction motor of energy efficiency class IE2 with an induction motor of energy efficiency class IE3 will allow to save 88 MW·h within a calculated operating period, which, expressed in monetary terms, is €13500 and the payback period is 5.11 years. Thus, the article proves that despite a higher initial price, the choice of an induction motor of energy efficiency class IE4 tends to be more economically advantageous. Цель. Сравнительный анализ расчетов энергопотребления, затрат на электроэнергию в течение жизненного цикла и сроков окупаемости насосной установки с 2-полюсными асинхронными электродвигателями мощностью 90 кВт различных классов энергоэффективности, питающимися напрямую от электрической сети. Методика Рассматриваемые режимы работы соответствовали типовому циклу работы, характерному для насосных установок с приблизительно постоянным расходом 75-110 % от номинального. Расчет основывался на паспортных данных насоса и электродвигателей, которые в свою очередь основаны на экспериментальных данных производителей. Результат В статье произведен расчеты энергопотребления, затрат на электроэнергию и сроков окупаемости насосной установки с 2-полюсными асинхронными электродвигателями мощностью 90 кВт, питающимися напрямую от электрической сети. Рассмотрено применение электродвигателей с классами энергоэффективности IE2, IE3 и IE4. Практическое значение. Показано, что в случае замены электродвигателя класса энергоэффективности IE2 в связи с плановой модернизацией электродвигателем класса энергоэффективности IE4 срок окупаемости для электродвигателя класса энергоэффективности IE4 составляет 2,18 года, экономия электроэнергии в течение расчетного 20-летнего срока эксплуатации составляет 268 МВт·ч, что в денежном выражении составляет 41110 €. При тех же условиях замена электродвигателя класса энергоэффективности IE2 на электродвигатель класса энергоэффективности IE3 позволит достичь экономии электроэнергии в течение расчетного срока эксплуатации 88 МВт·ч, что составляет в денежном выражении 13500 €, и срока окупаемости 5,11 года. Таким образом, в статье показано, что, несмотря на более высокую начальную стоимость, выбор электродвигателя класса энергоэффективности IE4 более выгоден с экономической точки зрения. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2021-02-23 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/225156 10.20998/2074-272X.2021.1.03 Electrical Engineering & Electromechanics; No. 1 (2021); 15-19 Электротехника и Электромеханика; № 1 (2021); 15-19 Електротехніка і Електромеханіка; № 1 (2021); 15-19 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/225156/225151 http://eie.khpi.edu.ua/article/view/225156/225152 Copyright (c) 2021 V.A. Prakht, V.V. Goman, V.M. Kazakbaev, V.A. Dmitrievskii, E.A. Valeev, A.S. Paramonov http://creativecommons.org/licenses/by-nc/4.0

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