Why is the energy consumption of a high-efficiency, energy-saving multi-stage pump so high?

Category: Water pump knowledge

2025-07-24

High-efficiency, energy-saving multi-stage pumps, widely used in industrial, agricultural, and municipal sectors, offer the key advantage of achieving higher lift and greater flow rates through multi-stage design, theoretically resulting in lower energy consumption. However, higher electricity consumption sometimes occurs in practical applications. The following is an analysis of this phenomenon.

I. Reasons for High Power Consumption in Multi-stage Pumps

1. Efficiency Issues: Although called high-efficiency, energy-saving multi-stage pumps, if their operating efficiency does not meet expectations, it may lead to increased power consumption. This may be due to improper pump design, manufacturing, or selection.

2. Operating Condition Issues: In actual operation, if the operating point of a multi-stage pump deviates from the optimal operating point, it will lead to reduced efficiency and thus increased power consumption.

3. Mismatch between Flow Rate and Lift: If the actual flow rate and lift requirements of the pump exceed the design values, the pump will operate at higher energy consumption.

II. Solutions

1. Optimized Design and Selection: When selecting a pump, the actual needs and operating conditions should be fully considered to choose the most suitable multi-stage pump model. During design, attention should be paid to improving pump efficiency and reducing energy consumption.

2. Adjusting Operating Conditions: By adjusting the pump's speed, blade angle, etc., the pump can be operated near the optimal operating point to improve operating efficiency.

3. Maintenance: Regularly maintain the pump to ensure it is in good operating condition. Severely worn parts, such as impellers and bearings, should be replaced promptly.

4. Monitoring System: Establish a multi-stage pump operation monitoring system to monitor the pump's operating status and energy consumption in real-time, promptly identifying and resolving problems.

III. Operation and Management Suggestions

1. Standardized Operation: Operators should strictly follow operating procedures for starting, stopping, and adjusting the pump to avoid misoperation leading to increased energy consumption.

2. Energy-Saving Awareness Training: Strengthen energy-saving awareness training for operators to improve their self-awareness of energy-saving operations.

3. Regular Inspections: Regularly inspect the pump to ensure it is in optimal operating condition.

In summary, the high power consumption of high-efficiency, energy-saving multi-stage pumps may involve multiple aspects. To solve this problem, comprehensive measures should be taken to reduce power consumption from design, selection, operation, and maintenance. Simultaneously, strengthening operator training and management and improving the self-awareness of energy-saving operations will achieve the goal of energy saving and emission reduction.

Previous: Causes of DGP type self-balancing multi-stage boiler feed pump suction interruption

Next: What happens when a high-efficiency, energy-saving multi-stage pump is overloaded?

Contact Us

Free Hotline:0086-13307481676

Fixed telephone:0086-13307481676      

Mobile:0086-13307481676(WeChat)

E-mail:sales@sanchangpump.com