| Parameter | Value |
|---|---|
| Model | ZL-10T |
| Cooling Capacity | 10 RT (35.2 kW heat rejection) |
| Water Flow Rate | 7.81 m3/h (130 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 | 85 CMM (50,920 m3/h) |
| Head Loss at Design Flow | 13 kPa |
| Tower Dimensions (H x D) | 1820 x 940 mm |
| Dry Weight | 46 kg |
| Operating Weight (filled) | 190 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) |
For a production line running 24 hours/day, 7 days/week, cooling tower availability is not a metric — it is the difference between shipping products and missing customer delivery dates. The ZL-10T is designed to support 99.5% uptime, equivalent to approximately 44 hours of allowable downtime per year, or roughly 3.6 hours per month for scheduled and unscheduled maintenance combined.
For a plastic injection molding line with a 30-second cycle time running three shifts, each hour of cooling tower downtime costs approximately USD 800-1,500 in lost production value (parts produced + labor cost). At 99.5% availability, a ZL-10T-protected line absorbs approximately USD 35,000-66,000 of downtime risk annually — justifying the spec premium for a proven counter flow design versus cheaper open-type alternatives.
For production lines where cooling interruption causes immediate product scrap (such as injection molding of medical-grade parts), plant managers typically specify N+1 redundancy: two ZL-10T towers, each rated at 100% of the load, with one operating and one on standby.
The two-tower configuration delivers three operational benefits: (1) scheduled maintenance can be performed on one tower while the other carries full load — no production shutdown required for water treatment, fan service, or basin cleaning; (2) if a fan motor or fill media fails on one tower, the second tower ramps to 110% capacity to cover the gap until repair; (3) winter freeze protection allows one tower to be drained and shut down, saving water treatment chemicals.
For a plant with two ZL-10T towers installed in N+1 configuration, the combined installed cost is approximately USD 1,700 versus USD 850 for a single tower, but the production availability guarantee is significantly higher.
The ZL-10T's 7.81 m³/h circulation at 5°C range translates to 35.2 kW (10 RT) of heat rejection. For a plant manager sizing the tower to a specific process, three common integration scenarios apply:
Scenario 1 — Injection molding machine: A 200-ton injection molding machine (the machine tonnage, not cooling tonnage) typically generates 25-40 kW of process heat through barrel heaters, mold cooling, and hydraulic systems. The ZL-10T's 35.2 kW capacity matches this load with minimal margin.
Scenario 2 — Water-cooled chiller: A 10 RT water-cooled chiller rejects approximately 42 kW (chiller + compressor heat), requiring 8-10 m³/h of condenser water flow. The ZL-10T's 7.81 m³/h is tight — we recommend stepping up to a ZL-15T (11.7 m³/h) for chiller condenser duty.
Scenario 3 — Direct process cooling: For jacketed reactor cooling, weld cooling, or similar direct applications, the ZL-10T's 7.81 m³/h serves 30-50 L reactor volumes effectively.
The ZL-10T is designed for 12 hours of scheduled annual maintenance, distributed across four 3-hour quarterly windows. This is significantly less than industry-typical 24-40 hours for similar capacity FRP towers.
Q1 maintenance (3 hours): Water chemistry analysis, basin cleaning, drift eliminator inspection. Q2 maintenance (3 hours): Fan motor bearing lubrication, V-belt tension check (if belt-driven). Q3 maintenance (3 hours): Fill media inspection, spray nozzle cleaning, water distribution system check. Q4 maintenance (3 hours): Pre-winterization inspection, basin heater test, freeze protection system check.
For plant managers planning annual production schedules, the ZL-10T's 12-hour maintenance window is predictable and can be coordinated with planned production downtime (mold changes, equipment upgrades) to minimize impact on overall equipment effectiveness (OEE).
When a cooling tower fails mid-shift, the cascading impact extends beyond the immediate line stoppage:
Hour 1: Direct production loss, plus operators and supervisors idled. Estimated cost: USD 500-800/hour for a typical plastic processing plant.
Hours 2-4: Mold cooling water temperature rises, cycle times extend 15-30%, part quality degrades (warp, sink marks, dimensional drift). Scrap rate can climb from 1% to 8-12%. Estimated cost: USD 1,200-2,000/hour including quality losses.
Hours 4+: Hydraulic oil temperature exceeds 60°C, viscosity drops, servo valves malfunction. Risk of permanent damage to injection molding machine barrels if temperature exceeds 220°C. Estimated cost: USD 3,000-5,000/hour including potential equipment damage.
The ZL-10T's 99.5% uptime target caps annual unplanned downtime at 44 hours, bounding the worst-case production loss at approximately USD 50,000-100,000 per year — a meaningful but manageable exposure.
For plant managers standardizing on ZL-10T cooling towers across multiple facilities, a consistent operator training protocol is essential. The ZL-10T's three operator-facing interfaces are:
1. Float valve in basin: Maintains makeup water level. Operators check weekly for proper closure and no overflow.
2. Fan motor starter: Simple on/off with thermal overload. Operators verify rotation direction at startup and monitor amp draw weekly.
3. Water treatment injection point: Algaecide and scale inhibitor injection. Operators verify chemical feed daily and adjust based on water test results.
Standardizing these three interfaces across facilities enables rapid cross-training of operators and consistent shift hand-over documentation.
The ZL-10T targets 99.5% uptime, equivalent to approximately 44 hours of allowable downtime per year. For a production line running 24/7, this caps annual production loss at approximately USD 50,000-100,000 per year.
For production lines where cooling interruption causes immediate product scrap (medical-grade parts, optical-grade molding), N+1 redundancy with two ZL-10T towers is recommended. Total cost USD 1,700 versus USD 850 for single.
The ZL-10T's 35.2 kW cooling capacity matches a 200-ton injection molding press running at 70-80% utilization. For presses at >90% utilization, step up to ZL-15T (52 kW) or ZL-20T (60 kW).
The ZL-10T is designed for 12 hours of scheduled annual maintenance, distributed across four 3-hour quarterly windows. This can be coordinated with planned production downtime for minimal impact.
Hour 1: USD 500-800 (direct production loss). Hours 2-4: USD 1,200-2,000/hour (quality degradation, scrap rate climbs from 1% to 8-12%). Hours 4+: USD 3,000-5,000/hour (potential equipment damage).
Authoritative References: OSHA 29 CFR 1910.95 Occupational Noise Exposure | Lean Enterprise Institute — Overall Equipment Effectiveness
Explore other ZL-10T 10 Ton FRP Counter Flow Cooling Tower variants engineered for different applications:
Zillion has supplied industrial cooling towers since 2009, with FRP counter flow construction as our standard since 2014. The ZL-10T's 7.81 m3/h flow at 5C range and 35.2 kW heat rejection cover the 10-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.
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