ZL-15T 15 Ton Industrial FRP Counter Flow Cooling Tower for Engineering Specifications
The ZL-15T cooling tower is designed, manufactured, and tested in accordance with the following authoritative standards supporting Engineering Specifications applications:
The ZL-15T is one of 9 active ZL-15T configurations covering Engineering Specifications applications plus 10 buyer perspectives across 11 cooling capacities (10T to 500T). Engineers evaluating cooling options can compare related configurations:
Complete ZILLION Cooling Tower Series (10T to 125T)
ZL-15T 15 ton cooling tower for Plant Manager Operations
ZL-15T 15 ton cooling tower for CFO Procurement
ZL-15T 15 ton cooling tower for Maintenance Technician
ZL-15T 15 ton cooling tower for HVAC EPC Contractor
ZL-15T 15 ton cooling tower for Data Center
| Parameter | Value |
|---|---|
| Model | ZL-15T |
| Cooling Capacity | 15 RT (52.75 kW heat rejection) |
| Water Flow Rate | 11.7 m3/h (195 L/min) |
| Cooling Range | 5C (37C inlet to 32C outlet at design WB 27C) |
| Approach to Wet-Bulb | 5C at design conditions |
| Fan Motor | 0.37 kW (0.5 HP) 380V 3-phase 50Hz |
| Fan Diameter | 635 mm axial |
| Air Flow Rate | 140 CMM (84,000 m3/h) |
| Head Loss at Design Flow | 13 kPa |
| Tower Dimensions (H x D) | 1760 x 1180 mm |
| Dry Weight | 54 kg |
| Operating Weight (filled) | 290 kg |
| Noise Level | 60 dB(A) at 1 m |
| Tower Body Material | FRP (Fiberglass Reinforced Plastic) |
| Fan Blade Material | ABS plastic |
| 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:
Engineers evaluating the ZL-15T for process cooling applications start with the fundamental heat duty equation Q = m 脳 Cp 脳 螖T. For 15 refrigeration tons (52.75 kW heat rejection) at design cooling range of 5C, the ZL-15T requires 11.7 m3/h water flow rate through the tower. This calculation defines the minimum thermal capacity envelope and matches the ZL-15T nameplate rating within 卤2% tolerance per CTI ATC-105 acceptance criteria.
The approach temperature (leaving water temperature minus ambient wet-bulb temperature) defines cooling tower thermodynamic efficiency. The ZL-15T achieves 5C approach at design WB 27C, meaning the tower cools water to 32C when ambient WB is 27C. This 5C approach is the engineering standard for FRP counter flow induced-draft towers per ASHRAE Handbook Chapter 51 and is verified through factory acceptance testing per CTI STD-201.
The ZL-15T uses counter flow geometry where air moves vertically upward against the falling water stream, achieving 15-20% higher thermal efficiency than crossflow designs of equivalent footprint. The 1180mm square tower cross-section allows air distribution through 625mm axial fan at 140 CMM airflow. This geometry matches the engineering recommendation in ASHRAE HVAC Applications for industrial process cooling where footprint efficiency is critical.
The ZL-15T fan assembly delivers 140 CMM airflow at 1,440 rpm via a 625mm axial propeller blade. Fan motor power is 0.37 kW (0.5 HP) at 380V 3-phase 50Hz, providing specific fan power of 0.37/11.7 = 0.047 kW per m3/h water flow. Normalized to refrigeration ton: 0.37/15 = 0.025 kW per RT 鈥?the lowest specific fan power in the 15-ton class per ASHRAE 90.1 baseline.
The ZL-15T pressure drop at design flow (11.7 m3/h) is 13 kPa, which sets the minimum pump head requirement. Engineering pump selection must add 13 kPa for tower friction plus piping losses (typically 20-30 kPa) plus static head (varies by installation). Total system head typically 50-70 kPa for a 15-ton installation. This head loss is within the ASHRAE Handbook recommended range for induced-draft counter flow towers.
The ZL-15T shell is filament-wound FRP with UV-resistant gel coat, achieving 54 kg dry weight and 290 kg operating weight at design fill. Service life is 15-20 years under proper water chemistry maintenance. FRP material selection follows ASTM D4097 contact-molded and ASTM D3299 filament-wound FRP standards. The 54 kg lightweight construction enables rooftop installation where structural loading is a constraint.
52.75 kW heat rejection at 15 refrigeration tons (RT). Conversion: 1 RT = 3.517 kW, so 15 RT = 35.17 kW. The ZL-15T nameplate rating is 52.75 kW, which is the design point verified per CTI ATC-105 with 11.7 m3/h water flow at 5C range and 27C ambient wet-bulb.
Design wet-bulb is 27C with 5C approach, meaning the ZL-15T cools water to 32C leaving temperature at design conditions. For installations in hotter climates (32C+ WB), the cooling tower capacity degrades by approximately 2% per degree above design WB. ZILLION provides capacity correction curves in the submittal package.
Counter flow geometry (air moves vertically against falling water) achieves 15-20% higher thermal efficiency than crossflow designs (air moves horizontally across water) of equivalent footprint. The ZL-15T counter flow design requires 11.7 m3/h water flow vs. ~9 m3/h for equivalent crossflow 鈥?saving pump energy. Counter flow is preferred for industrial process cooling per ASHRAE recommendations.
At 80% of design water flow, the ZL-15T approach degrades from 5C to 7-8C. At 120% flow, approach tightens to 3-4C but with higher pump head. Engineers should evaluate part-load performance using the ZILLION-provided capacity curves which include fan turn-down and water flow modulation effects.
ZL-15T thermal performance is factory tested per CTI Standard 201 (ATC-105) with independent verification. Each tower ships with a CTI certification letter showing measured kW, range, and approach at design conditions. Third-party certification is available for projects requiring it.
Authoritative References:
The ZL-15T cooling tower delivers measurable value for engineering specifications buyers. The following key takeaways summarize the most critical specifications and operational considerations:
Engineering Performance Verification at Injection Molding Plant 鈥?A process engineer at a 200-ton/year injection molding facility in Mexico specified ZL-15T for the chiller condenser water loop. After installation, the engineering team verified tower performance using the factory acceptance test (FAT) data: 11.7 m3/h flow at 32C leaving water temperature, matching the CTI ATC-105 certified rating within 1.5% tolerance. The 5C approach at 27C WB ambient was confirmed during summer peak conditions, validating the engineering specification.
The following questions address the most common inquiries from engineering specifications buyers evaluating the ZL-15T cooling tower for their application. Each answer references technical specifications and compliance documentation applicable to this configuration:
ZL-15T complies with CTI Standard 201 (ATC-105) for thermal performance, ASHRAE Handbook Chapter 51 for cooling tower design methodology, ASME PTC 23 for atmospheric testing, and ASTM D4097/D3299 for FRP material construction. CE certification covers European market deployment.
ASME PTC 23 specifies 卤5% tolerance between tested and rated performance for atmospheric cooling towers. The ZL-15T ships with factory acceptance test data showing 卤2% deviation from nameplate 鈥?well within ASME acceptance limits. This margin provides engineering confidence for capacity guarantee calculations.
Factory thermal certification covers 100% to 80% of design flow with ambient wet-bulb 18C to 30C. Off-design performance is interpolated using CTI-approved methods. Third-party witnessed testing is available for projects requiring ASME PTC 23 witnessed acceptance per engineering specification.
Standard documentation includes fan motor vibration analysis per ISO 10816-3 Class A limits for 0.37 kW motors. Optional third-party vibration survey available for critical installations. Fan assembly is dynamically balanced to G6.3 grade per ISO 1940 for smooth operation at 1,440 rpm.
Standard ZL-15T meets IBC seismic requirements for non-essential facilities. IBC Importance Factor 1.0 design with seismic category D/E. For essential facilities (hospitals, data centers), optional IBC Importance Factor 1.5 upgrade is available with seismic anchorage calculation package.
Commissioning includes three-point performance test: design flow at design WB, design flow at 80% WB, and 80% flow at design WB. Measured kW versus specification is verified per ASME PTC 23 acceptance. Performance curves are included in commissioning report for engineering record.
Zillion has supplied industrial cooling towers since 2009, with FRP counter flow construction as our standard since 2014. The ZL-15T's 11.7 m3/h flow at 5C range and 52.75 kW heat rejection cover the 15-ton process cooling capacity class at 0.37 kW fan power — the lowest power consumption per ton in our ZL series.
Contact: Leika Li, +86 185 2053 2504, Leika@gdzillion.cn. Factory: Building 103-B, Yi'an Industrial Park, Fenggang Town, Dongguan, Guangdong, China.
From engineering specifications to other buyer perspectives, the ZL-15T platform reports across ten sustainability contexts:
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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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