Feasibility Study to Upgrade DOL Driven Pumps to Variable Speed Drives

Chambers, Aaron (2021) Feasibility Study to Upgrade DOL Driven Pumps to Variable Speed Drives. [USQ Project]

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Abstract

Centrifugal pumps operating at constant speed with the discharge flow throttled consume unnecessary energy. Implementation of variable speed drives can reduce this energy consumption through the reduction of pump speed. The introduction of variable speed drives can also impact other aspects of the equipment and system, including environmental emissions, maintenance requirements and equipment performance which all require consideration.

Effective metrics to measure such a proposal are known as the life cycle cost and payback period analysis. These tools consider all financial impacting aspects of the proposal over either a 12 month period or the operating life of the equipment to determine a projects feasibility. In this application financial impact consideration has been given to energy consumption, environmental emissions, maintenance requirements, motor cooling capacity, system harmonics, cable transmission line effects and equipment purchase, installation and commissioning costs.

Through the above mentioned analysis it can be concluded that significant energy, environmental and maintenance cost benefits are available , equipment operational life impacts are negligible and purchase, installation and commissioning costs are expensive. This results in a large 5.48 million dollar life cycle costs benefit but a long payback period of 3.7 years associated with this proposal.

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Item Type:	USQ Project
Item Status:	Live Archive
Faculty/School / Institute/Centre:	Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors:	Ahfock, Tony
Qualification:	Bachelor of Engineering (Electrical and Electronic)
Date Deposited:	03 Jan 2023 00:02
Last Modified:	26 Jun 2023 00:56
Uncontrolled Keywords:	centrifuge, pump, discharge flow, variable speed drive, life cycle cost, payback period
URI:	https://sear.unisq.edu.au/id/eprint/51803

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