Sewage treatment equipment articles: on the life-cycle cost of centrifugal pumps

Pumping systems account for 20% of global electricity consumption, and even some 25% to 50% of energy consumption in some industrial plants. The cost of repairs also accounts for a large proportion of the total plant. A pump in the installation of the life of 15 to 20 years after the annual need to pay some follow-up costs.

The full life cost (LCC) for any piece of equipment is the total "life cost" of purchasing, installing, operating, repairing and eventually dismantling the piece of equipment. The LCC that determines a device needs to follow certain methods to determine and quantify all the factors in the LCC equation. Many businesses only consider the system's original purchase price and installation costs. In fact, it is the fundamental interest of the plant's design / management staff to assess the life-cycle costs of different solutions before major equipment is installed or overhaul at the plant. The result of the assessment will identify the most economically attractive options. As competition in the domestic and international markets intensifies, companies must continually seek ways to save money and increase economic efficiency. As a way to reduce costs, the operation of plant equipment is receiving special attention, especially with regard to minimizing energy consumption and reducing plant downtime. An in-depth study of the various components that make up the total cost will significantly reduce the costs of energy, operations and maintenance. Massive waste generation and excessive energy consumption are also important causes of environmental pollution in the world. Life-cycle cost analysis (LCC analysis) is a multi-system management tool that helps businesses reduce waste and increase utilization. LCC analysis has long been an integral part of the design of military equipment, especially large-scale equipment systems such as aircraft and tanks. In recent years this method has been used in industrial systems, including pumping systems. Life-cycle cost analysis is especially important for pumping systems, as many of the important factors in LCC are often overlooked in the choice of pumping system. When choosing between different designs or between major overhauls, LCC as a comparison tool leads to the best cost-effectiveness solution with limited available data. The LCC equation can be expressed as: LCC = Cic + Cin + Ce + Co + Cm + Cs + Cenv + CdC = Cost Factors ic = Original Price, Acquisition Costs (pumps, systems, pipes, accessories) in = Installation and Commissioning e = Energy costs o = Production operating costs (system man- agement costs) m = Maintenance costs (parts, man-hours) s = Parking time, production losses env = Environmental costs d = Valuation of various factors of demolition of life-cycle costs After being summed, they can be used to compare different design schemes, while the total estimated cost is the LCC value. When performing a systematic evaluation, or when selecting pumps and other equipment, you must establish the best information about the capacity and operation of your plant. The assessment process itself is purely mathematical, but the result of the assessment will be wrong and inaccurate if wrong and inaccurate information is used. LCC analysis is a way of predicting the best cost-effectiveness scenario, which does not guarantee a specific outcome, but can help plant designers / managers plan several different scenarios within a limited range of available data Reasonable comparison. The design of a pumping system is the most important factor in minimizing life-cycle costs. Vain pumping systems that use high-pressure heads increase energy costs, while over-designed systems increase the pump load, resulting in extensive maintenance and unplanned parking.

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