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Two Zhaolin Plaza office buildings in Beijing's core business district installed Vulcan S500 units on their central air-conditioning circulating water systems. After 5 months, chemical inhibitors were completely replaced, scale fell off cooling tower packing, and the system operated stably with conductivity up to 6630 µS/cm—significantly reducing wastewater discharge.
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.
138k
m² Total Area
25
Floors Each
2
Vulcan S500 Units
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.
The facility sought a non-chemical solution that would maintain system efficiency, reduce water consumption, and eliminate the need for hazardous chemicals.
Complex: Zhaolin Plaza
Area: Beijing Economic-Technological Development Area
Buildings: Building A & Building B
Country: China
Model: Vulcan S500 (one per building)
System: Central air-conditioning circulating water
Make-up Water: 270 µS/cm conductivity
Installed by: Beijing Vulcan Water
Cooling tower circulating water system
Zhaolin Plaza office towers (108.6m)
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 |
20x
Achieved without blow-down, compared to typical 3-5x with chemical treatment.
Chemical inhibitors completely replaced
Scale fell off cooling tower packing
No new scale formation observed
Approaching temperature remained stable
Significantly reduces blow-down and wastewater
Eliminates scale inhibitor purchases
Stable approaching temperature, less energy
20x ratio without scaling
Vulcan S500 Specifications
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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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.
Join Zhaolin Plaza and other commercial leaders in choosing Vulcan for chemical-free, water-conserving scale prevention.
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.
China
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