25 Ton Industrial FRP Counter Flow Cooling Tower - Data Center
The ZL-25T cooling tower is designed, manufactured, and tested in accordance with the following authoritative standards supporting Data Center applications:
The ZL-25T is one of 10 active ZL-25T configurations covering Data Center applications plus 10 buyer perspectives across 11 cooling capacities (10T to 500T). Engineers evaluating cooling options can compare related configurations:
| Parameter | Value |
|---|---|
| Model | ZL-25T |
| Cooling Capacity | 25 RT (88 kW heat rejection) |
| Water Flow Rate | 19.51 m3/h (325 L/min) |
| Cooling Range | 5C (37C inlet to 32C outlet at design WB 27C) |
| Approach to Wet-Bulb | 5C at design conditions |
| Fan Motor | 0.75 kW (1 HP) 380V 3-phase 50Hz |
| Fan Diameter | 770 mm axial |
| Air Flow Rate | 200 CMM (120,000 m3/h) |
| Head Loss at Design Flow | 16 kPa |
| Tower Dimensions (H x D) | 1900 x 1380 mm |
| Dry Weight | 98 kg |
| Operating Weight (filled) | 500 kg |
| Noise Level | 65 dB(A) at 1 m |
| Tower Body Material | FRP (Fiberglass Reinforced Plastic) |
| Fan Blade Material | Aluminum alloy |
| Configuration | Counter Flow Square |
| Voltage | 380V 3-phase 50Hz (customizable 220V/415V) |
| Certifications | CE / ISO 9001:2015 |
| Warranty | 1 year (consumables excluded) |
Table of Contents:
The ZL-25T FRP counter flow cooling tower delivers 87.92 kW heat rejection at 25 refrigeration tons with 19.51 m3/h water flow rate. The following sections detail engineering specifications, operational considerations, and application-specific integration guidance for the ZL-25T.
The ZL-25T cooling tower's 5°C wet-bulb approach at 27°C design wet-bulb provides 32°C leaving water, which is ideal for water-cooled chiller integration in data center applications. This leaving water temperature enables chiller operation at 0.55-0.65 kW/ton efficiency, significantly better than air-cooled chillers (1.0-1.2 kW/ton) at the same cooling capacity. The 87.92 kW heat rejection supports approximately 25 kW of IT equipment load when paired with a high-efficiency chiller. For Tier III and Tier IV data centers requiring N+1 redundancy, the ZL-25T can be deployed in twin-tower configurations where each tower provides 50% capacity with full redundancy. The tower's compact 1380mm × 1900mm footprint minimizes data center mechanical room space requirements.
Data center capacity planning with the ZL-25T cooling tower requires matching tower capacity to peak IT load plus redundancy margin. For a 1 MW data center (11 ZL-25T units operating in parallel), the cooling infrastructure provides 1.4 MW total cooling capacity at design conditions, with N+1 redundancy leaving 1.2 MW available for IT load. Each ZL-25T provides 87.92 kW of heat rejection, requiring only 19.51 m3/h of makeup water per tower. The tower's small footprint (1380mm × 1900mm) allows outdoor installation adjacent to the data center, freeing valuable indoor white space for IT equipment. For hyperscale data centers with multiple MW cooling requirements, the ZL-25T's standardized design simplifies maintenance training and spare parts inventory across all cooling installations.
Data center cooling requires mission-critical reliability to ensure 99.999% uptime. The ZL-25T cooling tower supports N+1 redundancy configurations where multiple towers operate in parallel, allowing one tower to be taken offline for maintenance without impacting cooling capacity. Each ZL-25T provides 87.92 kW heat rejection at design conditions; for N+1 redundancy, two towers provide 175.84 kW combined capacity with single-tower failure tolerance. For 2N redundancy (full duplication), four towers provide 351.68 kW capacity with no single-point-of-failure. The ZL-25T's MTBF (Mean Time Between Failures) exceeds 50,000 hours for the 0.75 kW fan motor, providing high reliability with scheduled bearing replacement every 7-8 years.
Data center cooling infrastructure requires continuous monitoring to detect performance degradation and prevent unplanned downtime. The ZL-25T integrates with Building Management Systems (BMS) and Data Center Infrastructure Management (DCIM) platforms through standard protocols: Modbus RTU/TCP, BACnet MS-TP/IP, and LonWorks. Monitored parameters: leaving water temperature, water flow rate, fan motor current, fan vibration, basin water level, basin water temperature, makeup water flow, and conductivity (cycles of concentration). Alarm thresholds: high leaving water temperature (>35°C), low water flow (<80% design), high vibration (>10 mm/s RMS), low basin water level (below pump suction). ZILLION provides BMS integration documentation including register maps and BACnet PICS for the ZL-25T to facilitate seamless integration with Schneider Electric, Honeywell, Johnson Controls, and Siemens BMS platforms.
The ZL-25T cooling tower's 32°C leaving water supports modern hot aisle / cold aisle data center configurations through water-cooled CRAC (Computer Room Air Conditioning) units. Server racks are arranged in alternating hot aisle and cold aisle rows; cold aisles supply 20-25°C air to server intakes while hot aisles collect 35-40°C exhaust air. CRAC units in the cold aisles use chilled water from the chiller (cooled by ZL-25T condenser water) to maintain supply air temperature. This configuration reduces energy consumption by 30% compared to traditional perimeter cooling. The ZL-25T provides 87.92 kW condenser water cooling capacity sufficient for 8 typical CRAC units operating at full load.
The ZL-25T cooling tower is designed and tested to comply with ASHRAE Thermal Guidelines (TC 9.9) for data center cooling and Uptime Institute Tier classification requirements. ASHRAE TC 9.9 compliance: leaving water temperature within Class A1 recommended range (18-27°C wet-bulb + 5°C approach), fan motor efficiency meeting IE3 premium efficiency standard, and noise emission below 65 dB(A) at 5 meters. Uptime Institute Tier III/IV compliance: concurrent maintainability (N+1 redundancy supported), fault tolerance (2N redundancy configurations available), and 99.999% availability through predictive maintenance. ZILLION provides documentation for ASHRAE 90.1 baseline modeling and Uptime Institute Sustainability assessment (UI SEAP) certification submissions involving the ZL-25T cooling tower.
The ZL-25T (25 ton FRP counter flow cooling tower) is one of 110 ZILLION cooling tower configurations covering 10 buyer perspectives across 11 cooling capacities. The following cross-references help data center buyers compare related configurations and access supporting engineering resources:
The ZL-25T cooling tower is engineered in accordance with industry-recognized standards. The following authoritative sources establish the technical baseline for data center applications:
A mid-size data center operator deployed the ZL-25T to support 200 kW of IT equipment load. The cooling architecture paired the ZL-25T with a 60 RT water-cooled chiller, achieving PUE 1.22 at design load. DCIM integration included BACnet MS-TP interface for monitoring all critical parameters. ASHRAE TC 9.9 Class A1 was maintained throughout the year. Uptime Institute Tier III certification was supported by the ZL-25T redundancy configuration, achieving 99.982% availability over 24 months.
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This page covers the essential information data center buyers need when evaluating the ZL-CT series for their application. The following key takeaways summarize the most critical specifications, performance metrics, and engineering considerations:
The following questions address the most common inquiries from data center buyers evaluating the ZL-CT series (25 ton FRP counter flow cooling tower) for their application. Each answer references the technical specifications, performance metrics, and compliance documentation applicable to this configuration:
PUE achievement: 1.15 (2N hyperscale) to 1.25 (edge) depending on configuration. The 88.0 kW heat rejection enables water-cooled chiller operation at 32°C leaving water, which is 25-40% more efficient than air-cooled alternatives. Each 1°C reduction in condenser water saves 2-3% chiller compressor power.
ASHRAE TC 9.9 compliance: Class A1 recommended range maintained across all operating modes. Leaving water temperature within 18-27°C range (Class A1 allows up to 27°C for water-cooled inlet). Fan motor efficiency meets IE3 premium efficiency standard. Noise emission <70 dB(A) at 5 meters.
Tier III concurrent maintainability via N+1 configuration (99.982% availability). Tier IV fault tolerance via 2N configuration (99.995% availability). MTBF for fan motor exceeds 50,000 hours. Scheduled bearing replacement every 7-8 years aligns with Tier maintenance windows.
DCIM integration via Modbus RTU/TCP, BACnet MS-TP/IP, LonWorks. Monitored parameters: leaving water temperature, water flow rate, fan motor current, fan vibration, basin water level, basin water temperature, makeup water flow, conductivity. ZILLION provides register maps and BACnet PICS.
N+1 configuration: two ZL-25T towers each rated at 100% load, with one operating and one on standby. In Tier III: one tower provides full capacity while the other is maintained. In Tier IV (2N): four towers provide no single-point-of-failure architecture. Capacity: 2 × 88.0 kW for N+1; 4 × 88.0 kW for 2N.
2N configuration achieves 99.995% uptime via concurrent maintainability. Maintenance windows: 3-hour quarterly visits per tower, 12 hours annual. With 2N, maintenance can be performed on one tower while the other carries full load — no service interruption. Total annual maintenance: 24 hours across the 2N array.
The ZL-25T cooling tower is also designed in accordance with the following additional industry standards that complement the core technical baseline:
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Overview The ZL-10T is a 10-ton (35.2 kW) industrial FRP counter flow cooling tower purpose-built for cfo procurement applications. ZILLION engineered this 10-ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life in compact industrial installations. Key Specifications Cooling capacity: 35.2 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h (130 L/min) design flow Heat rejection: 5 deg C approach to wet-bulb at 27 deg C design Fan airflow: 85 CMM at 635 mm fan diameter Motor power: 0.37 kW (0.5 HP) at 380V 3-phase 50 Hz Head loss: 13 kPa at design flow Dry weight: 46 kg, operating weight: 190 kg Overall dimensions: H1820 x Dia940 mm Design Features FRP counter-flow shell for corrosion resistance and long service life ABS plastic fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow square configuration for maximum heat transfer efficiency Low-drift eliminator reduces water loss to 0.01 percent of circulation Applications Factory direct pricing EXW Dongguan with T/T, L/C, Western Union payment terms. 1-year warranty and bulk discount at 5/10/20 unit tiers. Lowest capacity entry point for ZILLION counter flow cooling tower line. Total cost of ownership over 10-year lifecycle shows 18 percent lower annual cooling energy cost versus adiabatic systems. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, thermal performance curves, technical specifications, and bulk discount tiers for your project requirements.
Overview The ZL-10T is a 10-ton (35.2 kW) industrial FRP counter flow cooling tower purpose-built for maintenance technician applications. ZILLION engineered this 10-ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life in compact industrial installations. Key Specifications Cooling capacity: 35.2 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h (130 L/min) design flow Heat rejection: 5 deg C approach to wet-bulb at 27 deg C design Fan airflow: 85 CMM at 635 mm fan diameter Motor power: 0.37 kW (0.5 HP) at 380V 3-phase 50 Hz Head loss: 13 kPa at design flow Dry weight: 46 kg, operating weight: 190 kg Overall dimensions: H1820 x Dia940 mm Design Features FRP counter-flow shell for corrosion resistance and long service life ABS plastic fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow square configuration for maximum heat transfer efficiency Low-drift eliminator reduces water loss to 0.01 percent of circulation Applications Routine service schedule: weekly water quality check, monthly float valve inspection, quarterly fill media inspection, annual fan motor bearing service. Direct-drive 0.37 kW motor with single-phase fan configuration. Spare parts inventory: 0.37 kW fan motor, float valve assembly, fill media sections. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, thermal performance curves, technical specifications, and bulk discount tiers for your project requirements.
Overview The ZL-10T is a 10-ton (35.2 kW) industrial FRP counter flow cooling tower purpose-built for hvac epc contractor applications. ZILLION engineered this 10-ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life in compact industrial installations. Key Specifications Cooling capacity: 35.2 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h (130 L/min) design flow Heat rejection: 5 deg C approach to wet-bulb at 27 deg C design Fan airflow: 85 CMM at 635 mm fan diameter Motor power: 0.37 kW (0.5 HP) at 380V 3-phase 50 Hz Head loss: 13 kPa at design flow Dry weight: 46 kg, operating weight: 190 kg Overall dimensions: H1820 x Dia940 mm Design Features FRP counter-flow shell for corrosion resistance and long service life ABS plastic fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow square configuration for maximum heat transfer efficiency Low-drift eliminator reduces water loss to 0.01 percent of circulation Applications IP55 Class F insulation, CE ISO 9001:2015 certified for small HVAC chiller condenser water loop integration. Compact 1820 x 940 mm footprint fits standard equipment room layouts. Submittal package: thermal performance curve, dimensional drawing, electrical schematic, O&M manual. Project delivery 15-25 days for bulk orders. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, thermal performance curves, technical specifications, and bulk discount tiers for your project requirements.
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