ZL-20T 20 Ton Industrial FRP Counter Flow Cooling Tower for Data Center
The ZL-20T 5°C wet-bulb approach at design WB 27°C is critical for data center chiller integration:
Chiller performance: 5°C approach delivers 32°C condenser water at design conditions. Water-cooled chillers achieve rated capacity at this temperature. Each 1°C reduction in approach saves 2-3% chiller compressor power.
PUE impact: For a 100 kW data center load, the ZL-20T enables chiller COP of 4.5 at design conditions, supporting PUE 1.3-1.4 when combined with efficient UPS and IT equipment.
Approach degradation tolerance: ZL-20T maintains 5°C approach up to WB 30°C. Beyond this, supplementary cooling or hybrid configurations maintain chiller performance.
Annual energy impact: Maintaining approach within 1°C of design saves approximately USD 1,500-2,000 per ZL-20T annually in reduced chiller compressor power.
The ZL-20T 70 kW heat rejection capacity covers the following data center configurations:
Single rack (10 kW): ZL-20T covers 7 racks at full load. Typical high-density pod deployments.
Medium-density deployment (5 kW/rack): ZL-20T covers 14 racks. Standard enterprise data center room configuration.
Mixed-density (3-15 kW/rack): ZL-20T covers 5-20 racks depending on actual IT load profile. Common in hybrid cloud and HPC environments.
Modular deployment scaling: Adding ZL-20T units scales cooling capacity linearly. For 200 kW data center, 3 ZL-20T units provide N+1 redundancy at 100% capacity with one tower offline.
Edge data center: Single ZL-20T supports 50-100 kW edge deployments with appropriate containment and redundancy.
For Tier-rated data center cooling, the ZL-20T supports N+1 redundancy configurations:
Tier III: Multiple ZL-20T units with concurrent maintainability. Each tower rated for 70 kW; N+1 configuration supports 140 kW nominal with one tower in maintenance.
Tier IV: 2N redundancy with fault tolerance. Two independent ZL-20T cooling loops, each rated for full data center load. Loss of one loop leaves full capacity on the second.
Reliability metrics: ZL-20T MTBF >50,000 hours per unit. MTTR 4-8 hours for major component replacement. Annual availability >99.9% with standard maintenance.
Spare parts strategy: For Tier III/IV facilities, on-site critical spares (fan motor, eliminator section, float valve) ensure rapid MTTR.
The ZL-20T reliability profile meets Tier-rated data center cooling requirements with appropriate redundancy design.
Data center facility engineers integrate ZL-20T into BMS for continuous monitoring:
Monitored parameters: Fan motor amp draw (1.5 A nominal), leaving water temperature (32°C target), basin water level (float valve status), basin water temperature (5-50°C range).
Alarm thresholds: Amp draw >1.8 A (bearing wear alert), leaving water >35°C (capacity exceeded), basin level low (makeup water failure), basin temperature <4°C (freezing risk in cold climates).
Trending data: 1-minute resolution data logged for capacity planning, efficiency trending, and predictive maintenance.
Control integration: Optional VFD enables fan speed modulation for partial load operation. Modbus RTU or BACnet protocol support for BMS integration.
For high-availability data centers, BMS integration enables remote operation and reduces on-site staffing requirements.
The ZL-20T supports data center hot aisle/cold aisle configurations through ZL-20T heat rejection capacity:
Hot aisle containment: Server exhaust air at 35-40°C is captured and returned to air handlers. Air handlers chill air to 18-22°C supply temperature using chilled water from chillers, which reject heat via ZL-20T.
Cold aisle delivery: 18-22°C supply air is delivered to server intakes. Chilled water flow rate 16 m³/h per ZL-20T matches the heat load profile.
Air-side economizer integration: When ambient conditions permit, free cooling bypasses mechanical chilling. ZL-20T supports hybrid configurations where the cooling tower pre-cools condenser water to enable free cooling at higher ambient temperatures.
Density optimization: ZL-20T supports data center PUE 1.2-1.4 with proper hot/cold aisle design and optimal chilled water delta-T.
For new data center design, ZL-20T capacity supports 10-30 kW per rack high-density configurations.
The ZL-20T cooling tower supports data center compliance with industry standards:
ASHRAE TC 9.9: Thermal Guidelines for Data Processing Environments. ZL-20T 5°C approach at design WB 27°C enables chiller performance within ASHRAE recommended envelope for class A1-A4 environments.
Uptime Institute Tier Standard: Topology and operational sustainability requirements. ZL-20T reliability profile supports Tier I-IV classifications with appropriate redundancy design.
Energy Star for Data Centers: ZL-20T 0.55 kW fan power contributes to PUE calculations for Energy Star certification.
LEED for Data Centers: FRP shell recyclability and IE3 motor efficiency support LEED v4 BD+C: Data Centers credits.
For data center facilities pursuing certification, the ZL-20T documentation package includes compliance verification data.
From engineering specifications to operational hand-over, the ZL-20T platform is configured for ten distinct application profiles. Explore the other nine below:
The ZL-20T (20 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-20T 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-20T to support 200 kW of IT equipment load. The cooling architecture paired the ZL-20T 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-20T redundancy configuration, achieving 99.982% availability over 24 months.
Use the following jump links to navigate to specific sections of this product page:
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 (20 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 70.4 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-20T 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 × 70.4 kW for N+1; 4 × 70.4 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-20T cooling tower is also designed in accordance with the following additional industry standards that complement the core technical baseline:
Quick Specs: ZL-CT40 industrial round cooling tower with 40-ton cooling capacity, FRP material, counter-flow design, 1.5kW fan, CE certified. Best for industrial chiller systems and mid-scale manufacturing. The water cooling tower is a device used for cooling circulating water. By exchanging heat between hot water and air, the water temperature is reduced, thus realizing the repeated use of circulating water. Water cooling towers are widely used in industrial production, air conditioning systems and other fields, and are of great significance for saving water resources and reducing energy consumption.
Quick Specs: ZL-CT60 round shape water cooling tower with 60-ton capacity, counter-flow design, FRP material, 1.5kW fan, CE certified. Best for industrial chiller systems and large-scale cooling. A water cooling tower is a device used for cooling industrial water or other liquids. Its main function is to cool down hot water through heat exchange between hot water and air so that the cooled water can be recycled.
Quick Specs: ZL-CT100 FRP round cooling tower with 100-ton cooling capacity, FRP material, 2.2kW fan, CE certified. Best for large-scale industrial cooling and high-capacity chiller systems. The counterflow cooling tower is a common type of cooling tower. It sprays hot water from top to bottom and air flows from bottom to top, enabling hot water and air to exchange heat in the packing, thereby reducing the water temperature. The counterflow cooling tower has the advantages of high cooling efficiency, compact structure and small floor area, and is widely used in industrial production, air conditioning and refrigeration and other fields.
Quick Specs: ZL-CT square drop counter-flow cooling tower with FRP material, multiple capacity options, CE certified. Best for high-temperature industrial water cooling and open cooling tower applications. The square cooling tower has the advantages of small floor area, beautiful appearance, and convenient installation. It is widely used in fields such as air conditioning and refrigeration and industrial cooling, providing effective cooling guarantee for the normal operation of various equipments.
Quick Specs: ZL-CT factory-direct industrial cooling tower with multiple types and capacities, high-efficiency design, CE certified. Best for industrial cooling applications and large-scale manufacturing. A cooling tower dissipates heat from industrial or air - conditioning systems. Its working principle involves spraying hot water onto packing to form a water film, while air flow carries away heat from the water to lower its temperature. The cooled water is recyclable, saving water resources and reducing costs. There are various types, such as open and closed cooling towers. Open ones contact outside air directly, making water prone to contamination but with lower costs. Closed ones have water circulating in sealed pipes, ensuring cleaner water but usually at a higher price. Cooling towers play a key role in fields like power plants, chemical plants, and data centers, helping maintain system operation and improve energy utilization efficiency.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, designed for CFO buyers evaluating cooling tower procurement for capital projects. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for cfo procurement buyers.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, designed for maintenance technicians with low servicing needs and easy-access components. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for maintenance technician buyers.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, engineered for HVAC EPC contractor projects requiring turnkey cooling tower delivery with installation support. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for HVAC EPC contractor buyers.
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