15 Ton Industrial FRP Counter Flow Cooling Tower - Engineering Specifications
The ZL-15T FRP counter flow cooling tower delivers 52.75 kW heat rejection at 15 refrigeration tons with 11.7 m3/h water flow rate. The following sections detail engineering specifications, operational considerations, and application-specific integration guidance for the ZL-15T.
The 15-ton ZL-15T is rated at 52.75 kW of heat rejection under CTI STD-201 design conditions (95°F inlet water, 85°F wet-bulb, 5°F range). The flow rate of 11.7 m3/h is calibrated to a 5°C temperature drop across the fill media, which is the standard range for induced-draft counter-flow cooling towers. At this flow rate, the ZL-15T delivers exactly 52.75 kW of heat rejection when the leaving water temperature reaches 32°C against a 27°C wet-bulb. For applications requiring higher temperature drops (8-10°C), the tower can accept lower flow rates while maintaining the same 52.75 kW heat duty, provided the wet-bulb approach stays within 5°C of design. This makes the ZL-15T suitable for small commercial facilities (300-800 m²), 100-200 ton injection molding, 50-100 seat restaurants, small server rooms where standard HVAC loop conditions apply.
The wet-bulb approach is the most critical performance metric for any cooling tower. It represents the difference between the leaving water temperature and the ambient wet-bulb temperature. Under standard design conditions (27°C WB), the ZL-15T achieves a 5°C approach, meaning the leaving water reaches 32°C. As ambient conditions deviate from design, the approach varies predictably: at WB 24°C the leaving water drops to 29°C; at WB 30°C (hotter climate) the leaving water climbs to 35°C; at WB 21°C the leaving water drops to 26°C. The ZL-15T's 140 CMM airflow at 635 mm fan diameter is specifically sized to maintain this 5°C approach across the expected operating range. Off-design performance is documented in CTI thermal performance curves and is reproducible year-over-year when water flow and chemistry remain within design limits.
The ZL-15T uses counter-flow geometry where water falls downward through the fill media while air rises upward through the same media. This counter-flow arrangement provides 15-20% better thermal performance than cross-flow designs at the same airflow rate. The tower diameter of 1180mm and height of 1760mm are optimized for the 11.7 m3/h water flow rate: the diameter provides sufficient cross-sectional area for 140 CMM airflow to reach every part of the fill media, while the height ensures water spends adequate residence time in contact with the rising air stream. PVC film fill media is standard for low-fouling operation, with optional cellular drift eliminators reducing drift loss to 0.005% of circulating flow (less than 10 L/h for the ZL-15T).
The ZL-15T's axial fan delivers 140 CMM of airflow at design conditions, driven by a 0.37 kW motor at 380V 3-phase 50 Hz. The 635mm propeller diameter is sized to move 140 CMM against the 13 kPa external static pressure of the fill media and drift eliminators. Fan tip speed is kept below 60 m/s to minimize noise (the ZL-15T operates at 60-65 dB(A) at 5 meters) and to extend bearing life beyond 50,000 hours. Direct-drive configuration eliminates belt maintenance and slip-related performance degradation. For variable-speed applications, a VFD can reduce airflow to 50% of design during cool-weather operation, cutting fan power consumption by 80% and providing substantial energy savings over the cooling season.
The ZL-15T's 13 kPa head loss at design flow (11.7 m3/h) is the external static pressure that the chilled water pump must overcome, in addition to the chiller evaporator and piping losses. For a typical HVAC installation with 50 meters of equivalent piping and a chiller with 40 kPa evaporator pressure drop, total system head requirement is approximately 100 kPa. The ZL-15T's 13 kPa contribution is moderate, allowing standard end-suction pumps at 50 Hz operation. Variable-speed pump operation can save 30-50% pumping energy by throttling flow during low-load periods. The head loss curve is relatively flat across 50-110% of design flow, providing flexibility in pump selection without sacrificing cooling tower performance.
The ZL-15T shell is constructed from fiberglass-reinforced polyester (FRP) with UV-stabilized gelcoat surface, providing 15-20 year service life in outdoor environments. Dry weight of 54 kg and operating weight of 290 kg (when filled with water) require a flat concrete pad capable of supporting 340 kg per square meter. The ABS fan is corrosion-resistant and balanced to ISO 1940 G6.3 standard. All metal fasteners are stainless steel 316 for marine environment compatibility. Compared to galvanized steel towers, FRP requires no recoating, no rust repair, and maintains thermal performance throughout its service life. The ZL-15T's FRP construction is CE certified for European installations and IP55 rated for the electrical motor enclosure.
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Overview 10 Ton Industrial FRP counter flow cooling tower delivers reliable heat rejection for industrial process cooling applications. ZLILLION engineered this 10 ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life. Key Specifications Cooling capacity: 35.21 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h 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 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 life ABS fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow design for maximum heat transfer efficiency Drift eliminator reduces water loss to 0.01 percent of circulation Applications Bulk procurement with EXW Dongguan factory pricing and discount tiers for wholesale orders. T/T and L/C payment terms available for international buyers. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, technical specifications, and bulk discount tiers for your project requirements.
Overview 10 Ton Industrial FRP counter flow cooling tower delivers reliable heat rejection for industrial process cooling applications. ZLILLION engineered this 10 ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life. Key Specifications Cooling capacity: 35.21 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h 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 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 life ABS fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow design for maximum heat transfer efficiency Drift eliminator reduces water loss to 0.01 percent of circulation Applications Low maintenance design with weekly checks and easy motor service access. Spare parts inventory available for fast replacement and minimum downtime. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, technical specifications, and bulk discount tiers for your project requirements.
Overview 10 Ton Industrial FRP counter flow cooling tower delivers reliable heat rejection for industrial process cooling applications. ZLILLION engineered this 10 ton counter flow cooling tower with CE ISO 9001:2015 certification and quality construction for long service life. Key Specifications Cooling capacity: 35.21 kW (10 refrigeration ton) Water flow rate: 7.81 m3/h 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 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 life ABS fan blade for low maintenance and quiet operation IP55 Class F insulation for harsh industrial environments Counter flow design for maximum heat transfer efficiency Drift eliminator reduces water loss to 0.01 percent of circulation Applications HVAC EPC project submittal with 380V 3-phase IP55 Class F specifications. Compatible with standard HVAC control systems and BMS integration. Contact ZILLION Today Get a quote for the ZL-10T cooling tower from ZILLION factory direct. Contact our engineering team for factory pricing, technical specifications, and bulk discount tiers for your project requirements.
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