The cost of a water cooling plant (or chilled water plant) depends on several factors, including capacity, technology, location, and system complexity. Below is a general cost breakdown:
1. Key Cost Components
– Chillers (Centrifugal, Screw, Scroll, Absorption)
– $300 – $1,200 per ton (1 ton = 12,000 BTU/hr)
– Example: A 500-ton chiller may cost $150,000 – $600,000.
– Cooling Towers (Evaporative or Air-cooled)
– $100 – $400 per ton
– Example: A 500-ton cooling tower may cost $50,000 – $200,000.
– Pumps & Piping
– $50 – $200 per ton
– Controls & Automation (BMS/PLC)
– $50,000 – $200,000+ depending on complexity.
– Installation & Labor
– ~20–30% of equipment cost.
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2. Total Estimated Cost Range
| System Size | Estimated Cost Range |
|————-|———————-|
| Small (50–100 tons) | $500K – $1.5M |
| Medium (100–500 tons) | $1M – $5M |
| Large (500–2,000+ tons) | $5M – $20M+ |
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3. Factors Affecting Cost
– Type of Chiller: Absorption chillers are more expensive than electric chillers.
– Energy Efficiency: Higher efficiency (e.g., magnetic bearing chillers) increases upfront cost but reduces operating costs.
– Location: Labor rates and material costs vary by region.
– Retrofit vs. New Installation: Retrofitting an existing system may add costs.
– Additional Systems: Thermal storage (ice tanks), VFDs, and heat recovery increase costs.
4. Operational Costs
– Electricity: Major expense (~$0.08–$0.20 per kWh).
– Maintenance: ~$10–$30 per ton annually.
– Water Treatment: Required for cooling towers.
5. Alternatives & Cost-Saving Options
– Air-cooled chillers (lower upfront cost but less efficient).
– Modular chiller plants for scalability.
– Free cooling systems in colder