ZL-20T 20 Ton Industrial FRP Counter Flow Cooling Tower for Injection Molding
The ZL-20T 16 m³/h flow at 5°C range covers typical injection mold cooling circuits:
Mold cooling water flow: Typical flow rate 4-8 L/min per mold cavity. ZL-20T supports 33-67 cavity molds (or 2-4 large multi-cavity molds) at design flow.
Temperature stability: Mold cooling water at 25-30°C maintained within ±1°C by ZL-20T leaving water temperature control. Critical for cycle time consistency and part quality.
Cooling water quality: Filtered to 50 µm to prevent nozzle clogging in mold cooling channels. ZL-20T integrated strainer removes larger particulates.
Heat load per shot: 200-ton press at 200g shot weight dissipates 15-25 kW during injection cooling. ZL-20T supports 3-4 such presses at peak load.
Annual operating cost: ZL-20T USD 482 fan energy + USD 200 pumping + USD 150 water treatment = USD 832/year per cooling tower serving injection molding line.
Consistent mold cooling water temperature directly affects injection molding cycle time and part quality:
Cycle time impact: ±2°C cooling water variation causes ±3-5% cycle time variation. Maintaining 32°C ±1°C supports tight production scheduling.
Part quality: Cooling water temperature drift causes warping, sink marks, and inconsistent shrinkage. ZL-20T 5°C approach stability minimizes these defects.
Process capability: For Cpk targets 1.33+, cooling water temperature variation must stay below ±1°C. ZL-20T approach stability supports statistical process control requirements.
Production rate: 5% cycle time improvement from stable cooling = approximately USD 50,000/year additional production value for typical mid-size molding facility.
Scrap reduction: Stable cooling reduces part rejection by 10-15%, supporting lean manufacturing goals.
The ZL-20T 70 kW capacity covers typical multi-press plant configurations:
200-ton press + ZL-20T: Single 200-ton press at 30 kW peak heat load. ZL-20T 70 kW capacity supports 2 presses at average load with 100% overhead for peak demand.
350-ton press + ZL-20T: Single 350-ton press at 50 kW peak. ZL-20T covers 1 press with moderate peak load margin.
Multi-press plant (4 presses, 200-300 ton): Total peak load 100-150 kW. 2-3 ZL-20T units in parallel support full plant cooling with N+1 redundancy.
Injection molding facility planning: ZL-20T units scale with production capacity. Standard practice: 1 ZL-20T per 2-3 presses depending on shot weight and cycle time.
Centralized vs distributed cooling: Single ZL-20T serves 2-3 presses at point of use (distributed), or multiple ZL-20T in central plant serve larger facility (centralized). Both configurations supported.
The ZL-20T cooling water chemistry compatible with common mold materials:
P20 tool steel: Standard injection mold material. ZL-20T cooling water at 25-30°C supports P20 with corrosion inhibitor treatment.
H13 hot work steel: High-temperature mold material for engineering plastics. Compatible with ZL-20T standard water treatment regime.
S136 stainless: Corrosion-resistant mold material for PVC and corrosive plastics. ZL-20T SS316L upgrade recommended for these applications.
Beryllium copper mold inserts: High thermal conductivity inserts. Compatible with ZL-20T standard water chemistry.
Cooling channel corrosion: Standard ZL-20T water treatment prevents corrosion in steel mold cooling channels. Annual mold inspection recommended.
For high-end mold applications, ZL-20T SS316L upgrade minimizes cooling system corrosion risk.
The ZL-20T 70 kW heat rejection represents significant thermal energy that can be recovered:
Heat recovery options: ZL-20T heated water (35-40°C leaving water at peak load) can pre-heat facility domestic hot water or feed absorption chillers for combined cooling and heating.
Energy savings: 30% of mold cooling waste heat recoverable at 50% efficiency = 10 kW thermal energy = USD 5,000/year value at commercial gas rates.
Carbon impact: Heat recovery offsets gas consumption, reducing facility Scope 1 emissions by 15 tonnes CO2/year per ZL-20T.
Implementation cost: Heat exchanger piping USD 500-1,000 per ZL-20T installation. Payback 1-2 years for facilities with year-round heating demand.
For plastic processing facilities pursuing circular economy or net-zero emissions, ZL-20T heat recovery is a viable component.
The ZL-20T supports both closed-loop and once-through cooling configurations for injection molding:
Closed-loop (recommended): ZL-20T cools tower water, which circulates through mold cooling circuits. Closed system minimizes water consumption and treatment requirements.
Once-through (legacy): Cooling water drawn from facility source, used once, and discharged. Higher water consumption but no cooling tower requirement.
Hybrid configuration: ZL-20T supplements once-through cooling during peak summer loads. Reduces water consumption by 40% compared to pure once-through.
Water cost comparison: Closed-loop ZL-20T operating cost: USD 832/year energy + water. Once-through cost: USD 5,000-15,000/year water (depending on local rates). Closed-loop is 6-18x more cost-effective.
For injection molding facilities with significant water costs, ZL-20T closed-loop configuration delivers rapid ROI.
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 injection molding 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 injection molding applications:
A mid-size injection molding facility in Mexico deployed the ZL-20T to support 5 injection molding presses ranging from 200 to 400 tons. The ZL-20T provided stable 32°C cooling water for mold circuits across all presses, achieving ±1°C temperature stability. Cycle time consistency was maintained within ±0.5 seconds across the production schedule. Multi-press centralized cooling was achieved with predictable performance. The facility standardized on ZL-20T across all presses, simplifying spare parts inventory and operator training.
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This page covers the essential information injection molding 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 injection molding 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:
Cycle time stability: ±0.3-1.0 seconds across production schedule with stable 32°C leaving water. Stable mold cooling water temperature is critical for cycle time and part quality. For tighter cooling water temperature control (32.0°C ± 0.5°C), the ZL-CT series can be paired with a trim chiller.
Mold surface temperatures: 30-40°C consistently maintained with stable 32°C leaving water. Compatible with all standard mold materials including P20, H13, S7, and S50C tool steels. For high-tonnage molds with HRC 48-52 hardness, stable cooling water temperature prevents thermal fatigue cracking.
Multi-press plant support: centralized cooling with predictable performance across all presses. For a 20-press plant with average 400-ton presses, ZL-20T array delivers total cooling capacity with standardized interfaces. Simplified spare parts inventory and operator training across the plant.
Closed-loop strongly recommended over once-through cooling. Benefits: stable cooling water chemistry, consistent temperature independent of city water variations, water consumption reduced 95%, reduced water cost, environmental compliance. Payback period: 2-3 years versus once-through cooling for most applications.
Variable load handling: stable 32°C leaving water maintained across 30-110% of nameplate capacity. Off-design performance: at 50% airflow (VFD), fan power drops to 12.5% of design (cube law), enabling 80% energy savings during shoulder seasons. Cycle time stability within ±1 second across load variations.
Tool steel compatibility: P20, H13, S7, S50C all supported with stable thermal management. For high-tonnage molds (HRC 48-52), cooling water temperature must remain stable to prevent thermal fatigue cracking. ANTEC technical papers confirm optimal heat extraction rates for high-tonnage automotive molds.
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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