About Zhaolin Plaza
Zhaolin Plaza is a premier commercial complex located in the core business district of the Beijing Economic-Technological Development Area. The plaza consists of two office buildings, Building A and Building B, with a total construction area of 138,000 square meters.
Each building rises 25 floors above ground with 3 underground levels, reaching a height of 108.6 meters. These modern office towers house numerous businesses and require reliable, efficient HVAC systems to maintain comfort for thousands of occupants. The central air-conditioning circulating water systems are critical infrastructure, and protecting them from scale and corrosion is essential for operational efficiency and equipment longevity.
m² Total Area
Floors Each
Vulcan S500 Units
The Challenge: Chemical Treatment & Water Waste
The central air-conditioning systems in both buildings faced common but costly challenges:
- Chemical Dependence: Reliance on chemical scale and corrosion inhibitors, requiring ongoing purchases and handling.
- Water Waste: Frequent blow-down was needed to manage conductivity and hardness, wasting water.
- Scale Formation: Existing scale on cooling tower packing was reducing heat transfer efficiency.
- Limited Concentration Ratio: Inability to safely concentrate circulating water increased makeup water demand.
Installation Details
Location
Complex: Zhaolin Plaza
Area: Beijing Economic-Technological Development Area
Buildings: Building A & Building B
Country: China
Vulcan Installation
Model: Vulcan S500 (one per building)
System: Central air-conditioning circulating water
Make-up Water: 270 µS/cm conductivity
Installed by: Beijing Vulcan Water
Installation Gallery
Cooling tower circulating water system
Zhaolin Plaza office towers (108.6m)
Quantifiable Results: Water Quality Evolution
The make-up water entering the system had a conductivity of 270 µS/cm. The following data was recorded after Vulcan installation, with no water blow-down during the test period:
| Parameter | At 2 Months | At 5 Months | Change |
|---|---|---|---|
| Conductivity | 3,680 µS/cm | 6,630 µS/cm | +80% (stable operation) |
| Total Hardness | 672 mg/L | 2,250 mg/L | No scaling at high concentration |
| Total Alkalinity | 298 mg/L | 346 mg/L | Minimal increase |
| Calcium | 204 mg/L | 346 mg/L | Remained in solution |
Concentration Ratio
20x
Achieved without blow-down, compared to typical 3-5x with chemical treatment.
Key Outcomes
- Chemical inhibitors completely replaced
- Scale fell off cooling tower packing
- No new scale formation observed
- Approaching temperature remained stable
Benefits for Commercial Office Buildings
Water Conservation
Significantly reduces blow-down and wastewater
Chemical-Free
Eliminates scale inhibitor purchases
HVAC Efficiency
Stable approaching temperature, less energy
High Concentration
20x ratio without scaling
Technical Specifications: Vulcan S500
| Max Pipe Diameter: | 20 inches (500 mm) |
| Max Flow Rate: | 2,600 GPM (600 m³/h) |
| Power Consumption: | 25 - 35 W |
| Connection: | Non-invasive (wraps around pipe) |
| Maintenance: | Zero |
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Redefining What's Possible in Cooling Water Treatment
The Zhaolin Plaza case study shatters conventional limitations of cooling water treatment. With Vulcan S500 units, two 108-meter office towers operated their HVAC systems at a 20x concentration ratio—far beyond the 3-5x typical with chemicals—without a single blow-down. Conductivity reached 6,630 µS/cm, hardness hit 2,250 mg/L, and yet the system remained stable, scale fell away, and chemical inhibitors were completely eliminated. This is the future of sustainable building operations: chemical-free, water-conserving, and maintenance-free.
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About the Author
Waslix (Vulcan Mineral Descaler) provides non-chemical, maintenance-free scale prevention using impulse technology. This case study documents the installation of two Vulcan S500 units at Zhaolin Plaza office buildings in Beijing, China, achieving 20x concentration ratio and eliminating chemical inhibitors.
