Industrial pumps are critical elements for many production processes, but they are often one of the largest consumers of electricity in enterprises. Since energy consumption accounts for a significant part of the costs for companies, it is important to carefully approach the selection, operation and maintenance of pumps and units. Of course, the energy efficiency of pumps depends on the characteristics of the liquid, such as viscosity, its temperature, the presence of solid particles, corrosion activity, etc. In this article, we will consider the main aspects that are worth paying attention to in order to increase the energy efficiency of pumps and reduce energy costs: 1. The right choice of pump for optimal energy efficiencyThe right choice of pump is one of the key factors determining the level of energy efficiency. A pump that meets specific operating conditions and operates in the most optimal cost area is characterized by highly efficient energy consumption. Otherwise, energy losses during pump operation increase significantly. Here are some important aspects to consider when choosing a pump:• Pump type: The choice between centrifugal, metering, triplex and other pump types depends on the required head and flow rates, the characteristics of the fluid to be pumped, etc. Centrifugal pumps are generally more energy efficient when pumping large volumes of low-viscosity fluids, while triplex pumps are optimal for high-viscosity fluids.• Pump performance: It is important to consider not only flow and head, but also the efficiency of the pump under the given conditions. An incorrectly selected pump operating outside the optimal flow range results in excessive energy losses.• Fluid viscosity: Pumps that pump fluids with high viscosity tend to consume more energy. In such cases, specialized pump models may be required that maintain high efficiency at high loads.The correct choice of a pump is a rather difficult task, given the many factors that affect its efficiency. A common mistake when choosing a pump is to select it not according to the characteristics of the network to which it will be connected, but according to the brand or equivalent of an existing pump. The consequence of such an irrational choice of a pump is overspending and low energy efficiency during its operation. GLOBAL OPT TRADE specialists will help you choose the optimal pump for the given operating modes. 2. Adjusting the pump speed using a frequency converterThe use of frequency converters is one of the most effective ways to reduce energy consumption in pumping systems. The frequency converter is installed on the electric motor that drives the pump and allows you to change the engine speed in accordance with the required network operating mode. This allows you to significantly reduce the energy consumption of the pumping unit in situations of significant irregularities in the network operation. For example, if the pump is operating at partial loads or reduced flow, automatic speed control can help save up to 30% (and sometimes more) of energy. GLOBAL OPT TRADE specialists can provide assistance in determining the feasibility of using a variable speed motor. 3. Maintenance of pumps and unitsRegular maintenance and inspection of the technical condition of pumps helps to maintain their efficiency at a high level. Here are some basic tips on how to extend the life of the pump and reduce energy consumption:• Replacing seals and bearings: Damaged seals or worn bearings can increase friction and leakage, thereby causing additional energy consumption. Regular replacement of these components allows pumps to operate with less energy loss.• Cleaning filters and pipelines: Dirt and deposits that accumulate in pipelines increase hydraulic resistance and increase power consumption. Significant contamination can lead to cavitation on the impeller, which can result in: pump failure, destruction of the impeller and other pump components.• Cleaning filters and pipelines reduces energy losses and ensures stable operation of the pumping system.• Leakage control: Fluid leaks due to damaged seals or poor sealing can lead to additional energy costs, so it is important to check and repair seals in a timely manner to prevent possible leaks. 4. Avoiding common mistakes when operating pumps• Poor maintenance: Ignoring maintenance or delays in repairs can lead to a significant increase in energy costs and pump failure.