Assessing the energy efficiency of irrigation pump systems
Abstract. The operating modes of pump units play a crucial role in determining the energy consumption of irrigation systems. Thus, the necessity of performing qualitative and quantitative assessments of the energy efficiency of such systems is of significant importance. This paper proposes a metho...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
Trakia University. Faculty of Agriculture, Stara Zagora
2023-09-01
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Series: | Agricultural Science and Technology |
Subjects: | |
Online Access: | https://agriscitech.eu/assessing-the-energy-efficiency-of-irrigation-pump-systems/ |
Summary: | Abstract. The operating modes of pump units play a crucial role in determining the energy consumption of irrigation
systems. Thus, the necessity of performing qualitative and quantitative assessments of the energy efficiency of such
systems is of significant importance. This paper proposes a method, newly established by authors, for accomplishing
such an assessment. Using dimensionless criteria from Dimensional Analysis (as outlined in earlier publications), we
propose a method to determine the specific energy consumption (ev
) for a given flow rate, regulated by either VFD or
throttle flow control, which are commonly used in practice. The specific relative energy consumption is depicted as an
exponential relationship with four other criteria, each expressed relatively. The exponents are determined depending on
the type of pump system flow rate control method applied. This energy exponent is also expressed in the dimensionless
form obtained depending on the main parameters of the pump and pipe system. In this regard, two energy efficiency
coefficients are introduced – of the pump K
e, pump and pipe system Ke, pipe. Results obtained after performing numerical
studies of a pump system, consisting of Bulgarian double-suction pumps, are presented. |
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ISSN: | 1313-8820 1314-412X |