Developing an Automation System for Improving the Energy Efficiency of Constant Pressure Irrigation Pumps
Publication: Journal of Irrigation and Drainage Engineering
Volume 142, Issue 11
Abstract
In the present study, the changes in system efficiency were investigated at constant pressure and at different flow rates between 100 and 50% of the nominal flow rate in an irrigation pumping plant. For this purpose, programable logic controller (PLC) and human machine interface (HMI) panel software was developed to automatically control motor speed by means of frequency, and valve opening by means of servomotor in an irrigation pumping system. In this automation system, pump flow rate was measured using an electromagnetic flowmeter and pump discharge pressure was measured using a pressure sensor. According to the results of the study, optimum system efficiency was observed at the point corresponding to 70% of the nominal flow rate. This system efficiency value was found to be 6.9% higher than the nominal system efficiency. However, the system efficiency at points corresponding to 50% or lower ratios of the nominal flow rate was found to be lower than the nominal system efficiency.
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Acknowledgments
This manuscript was supported by Selçuk University Scientific Research Projects Coordination Unit.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jun 2, 2015
Accepted: Feb 9, 2016
Published online: Jul 5, 2016
Published in print: Nov 1, 2016
Discussion open until: Dec 5, 2016
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