Sewage Treatment Equipment: About The Whole Life Cost Of Centrifugal Pumps

Dec 30, 2024

Pumping systems account for 20% of global electricity consumption and even 25% to 50% of energy consumption in some industrial facilities. Their maintenance costs also account for a significant proportion of the entire facility. During the 15-20 year lifespan of a pump after installation, a certain amount of follow-up costs need to be paid annually.

The life cycle cost (LCC) of any device is the total "life cycle cost" of purchasing, installing, operating, maintaining, and ultimately dismantling the device. To determine the LCC of a device, all factors in the LCC equation need to be determined and quantified according to a certain method.
Many companies only consider the original purchase price and installation cost of the system. In fact, it is the fundamental interest of the factory's design/management personnel to evaluate the full life cost of different solutions before the installation of major equipment or during major factory maintenance. The evaluation results will determine the most economically attractive plan. With the increasing competition in both domestic and international markets, enterprises must constantly seek ways to save costs and improve economic efficiency. The operation of equipment in factories is receiving special attention as a way to reduce costs, especially in minimizing energy consumption and shortening equipment downtime.
A thorough study of the various factors that make up the total cost will significantly reduce the costs of energy, operation, and maintenance. The massive generation of waste and excessive consumption of energy are also important causes of global environmental pollution.
Life Cycle Cost Analysis (LCC analysis) is a management tool applicable to multiple systems that helps businesses reduce waste and improve utilization. LCC analysis has always been an integral part of military equipment, especially in the design of large equipment systems such as aircraft and tanks. In recent years, this method has been applied in industrial systems, including pumping systems.
Life cycle cost analysis is particularly important for pumping systems, as many important factors of LCC are often overlooked in the selection of pumping systems.
When choosing between different design schemes or major maintenance projects, LCC can serve as a comparison tool to obtain the best cost-effectiveness solution within a limited range of available data.
The LCC equation can be expressed as:
LCC = Cic + Cin + Ce + Co + Cm + Cs + Cenv +Cd
C=Cost influencing factors
IC=original price, purchase cost (pump, system, pipe, accessories)
In=Installation and commissioning for production
E=energy cost
O=Production operation cost (labor cost for normal system management)
M=maintenance cost (parts, person hour)
S=parking time, production loss
Env=environmental cost
D=Demolition
After the estimation of various factors of the total life cycle cost is aggregated, it can be used for comparison of different design schemes, and the total estimated cost is the LCC value.
When conducting system evaluations or selecting pumps and other equipment, it is necessary to establish the best information about the output and operation of the device. The evaluation process itself is purely mathematical, but if incorrect and inaccurate information is used, the evaluation results will also be incorrect and inaccurate. LCC analysis is a method of predicting the best cost-effectiveness plan, which cannot guarantee a specific result, but can help factory designers/managers make reasonable comparisons of several different plans within a limited range of available data.
The design of the pumping system is the most important influencing factor in minimizing the total lifecycle cost. Using high-pressure pumping systems in vain will increase energy costs, while over designed systems will increase pump loads, resulting in extensive maintenance and unplanned shutdowns.