About Cooling Tower Pumps

A cooling tower pump is a critical and practical component of industrial cooling systems, widely used in petrochemical, power, steel, refinery, and process industries to transfer cooled water to the top of cooling towers.

These pumps generate high pressure and flow, moving cold water from dedicated basins to the top of the tower. After cooling through contact with air or cooling media, the water returns to the system, enabling continuous heat removal from industrial equipment.

Structure and Design of Cooling Tower Pumps

Cooling tower pumps are typically centrifugal pumps and can be designed as either vertical (Vertical Pump) or horizontal (Horizontal Pump) depending on process requirements and operational conditions.

Main components:

• Casing: Encloses the internal components and directs the fluid flow.
• Impeller: Blades designed to generate pressure and propel the fluid.
• Shaft: Transfers power from the motor to the impeller.
• Coupling: Connects the motor to the shaft while reducing vibration and lateral forces.
• Bearings: Upper and lower bearings support both radial and axial loads.
• Mechanical Seal: Prevents fluid leakage under high pressure, typically made from graphite or durable alloys.
• Electric Motor: Provides the required power for achieving the necessary flow and pressure.

Operation of Cooling Tower Pumps

The cooling process is performed as follows:

1. Fluid Entry: Cold water or process fluid enters the pump from the basin.
2. Pressure and Head Increase: The impeller pressurizes the fluid and directs it toward the outlet.
3. Transfer to Tower: Water is pumped to the top of the cooling tower, where it dissipates heat absorbed from industrial equipment through air or cooling media.
4. Return Flow: After temperature reduction, water returns to the basin, and the cooling cycle continues.

This mechanism ensures that water can travel long distances and heights with sufficient pressure, enabling efficient and continuous cooling.

Technical Specifications – Sample Hamgam Sanat Cooling Tower Pump

• Model: PU-HSC-60
• Capacity: 4,500 m³/h
• Head: 37 m
• Size: 33 × 25 × 42
• Speed: 950 RPM
• Manufacturer: Hamgam Sanat Knowledge-Based Company, Iran

Features and Advantages

• Compatible with various fluids and corrosion-resistant
• Optimized inline design for seamless integration with piping systems
• Heavy-duty shaft to minimize rotor defects and extend operational life
• Standard mechanical seal to prevent leakage
• Enclosed wear rings on the impeller and casing to reduce axial thrust
• Large impeller eye to minimize NPSHr
• Back Pull-Out Design for simple and quick maintenance
• Capable of handling high hydraulic flow rates

Cost and Economic Benefits

Compared to other cooling systems, cooling tower pumps are cost-effective due to high efficiency, the ability to withstand high temperatures, and water’s high boiling point, resulting in relatively low operational costs.

Manufacturing and Assembly at Hamgam Sanat

All stages of design, manufacturing, assembly, and quality control are performed by Hamgam Sanat Knowledge-Based Company, and the pumps are supplied under the “Made in Iran – Hamgam Sanat” brand.

These pumps meet high engineering standards, provide optimized hydraulic performance, and offer long service life, making them a reliable and economical solution for industrial cooling systems.