Cooling Water Circulation

Efficient heat transfer through continuous, controlled water movement.
Cooling water circulation is the process of pumping water through a system to absorb and remove waste heat from processes, machinery, or buildings. EKG Malaysia designs, installs, and optimizes complete circulation systems—including pumps, piping, controls, and heat exchangers—to ensure reliable, energy-efficient thermal management for industrial plants, HVAC systems, and power generation.

Key Components of a Circulation System:

• Circulation Pumps: The driving force. Selected for correct flow, head, and material compatibility.

• Heat Exchangers: Where heat transfer occurs (e.g., shell & tube, plate).

• Cooling Towers or Dry Coolers: Reject heat to the atmosphere in open or closed loops.

• Piping & Valves: Distribution network with isolation, control, and balancing valves.

• Control System: Sensors, VFDs, and controllers to maintain set temperatures and pressures.

• Water Treatment System: Critical for scale, corrosion, and biological control.

Common System Types:

• Open Recirculating System (Cooling Tower):

  • Water is cooled by evaporation in a tower and recirculated.

  • Challenge: Water quality degrades; requires rigorous treatment.

  • Pumps: Must handle varying static head from tower basin level.

• Closed Recirculating System:

  • Water circulates in a sealed loop, often with a glycol mix.

  • Heat is rejected via a heat exchanger to a secondary loop or dry cooler.

  • Challenge: Requires pressurization/expansion control.

  • Pumps: Constant volume; corrosion and fouling are primary concerns.

• Once-Through System:

  • Water from a source (river, sea, well) is used once and discharged.

  • Challenge: Environmental compliance and source water variability.

  • Pumps: Often high-flow, low-head raw water pumps.

Why Professional Design is Critical:

• Energy Efficiency: Pumping energy is a major cost. Correct sizing and control are paramount.

• System Reliability: Inadequate flow leads to overheating and process shutdown.

• Asset Protection: Controls scaling, corrosion, and biological growth to extend equipment life.

Our Circulation System Services:

1. System Audit & Design: Analyzing heat load, designing hydraulics, and selecting components.

2. Pump Selection & Sizing: Choosing pumps that operate at their Best Efficiency Point (BEP) for the system curve.

3. Control Strategy Development: Implementing variable flow, temperature control, and fail-safe sequences.

4. Installation & Commissioning: Ensuring the system operates as designed.

5. Water Treatment & Maintenance Programs: Ongoing support to maintain efficiency and reliability.

Engineered flow for effective heat rejection.
A well-designed circulation system is the backbone of efficient cooling.

Contact EKG Malaysia for expert cooling water circulation solutions. We engineer systems that are reliable, efficient, and built to last.