Understanding Your Pumping System
The right chilled water pumping strategy is key to efficiency and stable chiller operation. EKG Malaysia helps you select, commission, and optimise the correct setup for your building's needs.
Primary Pumps
Role: Move water through the chillers only.
Flow: Usually constant speed to meet chiller manufacturer's requirements.
Goal: Ensure safe, stable chiller operation.
Secondary Pumps
Role: Move water through the building load (AHUs, FCUs).
Flow: Often variable speed, responding to building demand.
Goal: Maintain comfort while saving energy at part load.
Common Configurations
Primary-Secondary System
Uses a common pipe to separate loops.
Primary = constant flow through chillers.
Secondary = variable flow to building.
Best for: Multi-chiller plants, retrofits, or when chiller protection is critical.
Variable Primary System
One set of variable speed pumps serves both chillers and building.
Best for: Modern plants with variable-flow chillers. Offers the highest pump energy savings.
Why It Matters in Malaysia
Part-load efficiency is crucial in our climate—systems often run at 40–70% load.
Prevents Low Delta-T Syndrome, a major cause of energy waste.
Supports GBI / Green Building certification through optimized energy use.
EKG's Service
We provide design review, commissioning, and optimisation to ensure your pumping system is correctly implemented, stable, and efficient.
Get the Right Setup
Choosing the correct pumping strategy balances performance, energy savings, and reliability.
Contact EKG Malaysia to design or audit your chilled water pumping system.
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