Pumping systems account for nearly 20 percent of the world's electrical energy demand and can range from 25 to 50 percent of the energy used in certain industrial operations.
Pumping systems are in widespread use around the world. They are found in domestic, commercial, agricultural, municipal water and wastewater applications, and in food processing, chemical, petrochemical, pharmaceutical and mechanical industries.
Although pumps are typically purchased as individual components, they operate as part of a system. The energy and materials used by a system depend on the design of the pump, the design of the installation, and the way the system is operated. These factors are interdependent and must be carefully matched to each other and remain matched throughout their working lives to ensure the lowest energy and maintenance costs, longer equipment life and reliability.
The initial purchase price of a pump is a small part of its life-cycle costs, as can be seen in Figure 1, which details the principal components of life-cycle costs.
Figure 1. Life-cycle cost components of a pump
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