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Water Cooling Tower Manufacturing
Water Cooling Tower: Open Circuit, Closed Circuit, Package Type & Industrial Cooling Systems — Complete Technical Guide
Looking for a water cooling tower for your injection molding machine, compressor, textile plant or industrial process? This comprehensive guide covers system types, capacity calculation, material options, maintenance best practices, and how to choose the right metal cooling tower for your facility.
- What Is a Water Cooling Tower? How Does It Work?
- Open Circuit vs. Closed Circuit — Differences & Selection Guide
- Package Type & Mini Cooling Tower
- Metal Housing Options — Steel, Galvanized, Stainless
- Fill Media, Spray Nozzles & Fan Motor
- Capacity Calculation Formula
- Model Specifications (HK17–HK65)
- Cooling Tower vs. Chiller — Which to Choose?
- Maintenance, Water Treatment & Legionella Prevention
- Industrial Application Areas
- Cooling Tower Prices — What Factors Affect Cost?
- Frequently Asked Questions
1. What Is a Water Cooling Tower? How Does It Work?
A water cooling tower is a mechanical heat rejection device that removes waste heat from industrial processes by transferring it to the atmosphere through evaporation. From injection molding molds and induction furnaces to air compressors and large HVAC systems, virtually every heat-generating machine relies on a cooling tower to maintain stable operating temperatures.
Cooling tower operating principle — based on evaporative heat transfer:
- Hot water inlet — Process water heated to 35–45°C is pumped to the top of the tower.
- Spray distribution — Cooling tower spray nozzles distribute hot water evenly over the fill media surface.
- Air–water contact — The fan motor drives air upward; this airflow absorbs heat from the water film, accelerating evaporation.
- Heat rejection — Approximately 1–2% of the water evaporates, carrying a large amount of latent heat out of the system.
- Cooled water return — Water cooled to 28–32°C collects in the sump and is pumped back to the process.
CTI (Cooling Technology Institute) Standards: HK Makine designs all cooling towers in compliance with international CTI performance and safety norms. Every unit delivered carries a verifiable capacity guarantee. Learn more →
2. Open Circuit vs. Closed Circuit — Differences & Selection Guide
The most critical decision when selecting an industrial cooling system is choosing between an open circuit water cooling tower and a closed circuit water cooling tower.
Open Circuit Cooling Tower
- Process water contacts ambient air directly
- Low investment cost, high cooling capacity
- Widely used in injection molding, HVAC, compressors
- Requires water treatment & Legionella management
- Most common cooling tower type in Turkey
Closed Circuit Cooling Tower
- Process water flows inside a coil — no air contact
- Water quality is preserved; scale risk is minimal
- Ideal for CNC, laser, medical, pharmaceutical
- Minimal chemical water treatment needed
- Lower long-term maintenance cost
Free system selection consulting: Share your process flow rate, inlet/outlet temperatures and water quality data. Our engineers will recommend the right system at no charge. +90 536 037 3281 · Product Page
3. Package Type & Mini Cooling Tower
A package type cooling tower is fully assembled and tested at the factory, then delivered ready for immediate commissioning. Only pipe and electrical connections are required on site — no additional structural work needed.
The mini water cooling tower (HK 17) is designed for single-machine applications such as one injection molding machine, small compressor or laser workstation: 40,000 kcal/h · 130 kg empty weight · 0.75 kW motor · 550 mm fan.
Key advantage: A package-type tower can be commissioned the day it arrives. No foundation casting, no extended installation period — plug in and run.
4. Metal Housing Options — Carbon Steel, Galvanized, Stainless Steel
HK Makine manufactures only metal-body cooling towers. The right housing material is selected based on your water chemistry and operating environment:
Carbon Steel ST37 — Epoxy Coated
The most common choice in Turkey. High mechanical strength with specialized epoxy coating for corrosion protection. Ideal for injection molding, compressors and general industrial use.
- Lowest initial investment
- Long life with periodic repainting
Hot-Dip Galvanized Steel
Unpainted surface, superior rust resistance for outdoor and humid environments. A balanced choice between carbon steel and stainless.
- No paint required, low maintenance
- Long-lasting protection in wet conditions
Stainless Steel Cooling Tower (AISI 304 / 316L)
Mandatory for food, pharmaceutical, chemical sectors and high-chloride or acidic water environments. Lifetime corrosion immunity and food-grade hygiene compliance.
- Lifetime anti-corrosion guarantee
- AISI 304 or AISI 316L grade available
Note: HK Makine does not manufacture plastic or fibreglass (GRP/FRP) cooling towers. All models feature full metal construction.
5. Cooling Tower Fill Media, Spray Nozzles & Fan Motor
Cooling Tower Fill Media
The fill media is the critical zone where heat transfer occurs. HK Makine uses chemically resistant PVC film-type fill plates that maximize the air–water contact surface, achieving peak evaporative heat transfer. Average service life: 10–15 years without replacement under normal water quality.
Cooling Tower Spray Nozzles
Cooling tower spray nozzles ensure uniform distribution of hot water across the fill surface. HK Makine systems use large-bore manifolds and clog-resistant nozzles, extending annual maintenance intervals and preventing capacity loss from uneven distribution.
Cooling Tower Fan Motor
The cooling tower fan motor directly determines energy consumption. HK Makine models offer a range from 0.75 kW to 15 kW. All fans feature CNC-machined, dynamically balanced aluminium or GFK blades operating below 55 dB(A). VFD (inverter) drive option delivers up to 20% energy savings by automatically adjusting fan speed to cooling demand.
6. Cooling Tower Capacity Calculation Formula
- Q — Heat Load (kcal/h): total heat to be rejected
- m — Water Flow Rate (l/h): volume of water circulating
- c — Specific Heat = 1 kcal/kg·°C (constant)
- ΔT — Inlet − Outlet Temperature Difference (°C)
Example B — Air Compressor: 5,000 l/h · 45→35°C · ΔT=10 → Q=50,000 kcal/h → HK 19 (65,000 kcal/h)
Example C — Induction Furnace: 80,000 l/h · 37→32°C · ΔT=5 → Q=400,000 kcal/h → HK 33 (450,000 kcal/h)
7. HK Makine Metal Cooling Tower Model Specifications (HK17–HK65)
Scroll right to view all columns on mobile
| Model | Capacity (kcal/h) | Flow (m³/h) | Empty Weight | Fan Dia. (mm) | Motor (kW) |
|---|---|---|---|---|---|
| HK 17 | 40,000 | 5–8 | 130 kg | 550 | 0.75 |
| HK 19 | 65,000 | 7–12 | 180 kg | 600 | 1.1 |
| HK 21 | 90,000 | 9–18 | 298 kg | 750 | 1.1 |
| HK 23 | 115,000 | 12–22 | 345 kg | 800 | 1.5 |
| HK 25 | 140,000 | 15–28 | 347 kg | 900 | 2.2 |
| HK 30 | 300,000 | 30–60 | 603 kg | 1,000 | 3 |
| HK 33 | 450,000 | 45–90 | 835 kg | 1,200 | 4 |
| HK 35 | 600,000 | 60–120 | 1,160 kg | 1,200 | 5.5 |
| HK 37 | 850,000 | 85–170 | 1,176 kg | 1,200×2 | 5.5×2 |
| HK 40 | 1,100,000 | 110–220 | 1,642 kg | 1,200×2 | 5.5×2 |
| HK 45 | 1,350,000 | 135–270 | 2,250 kg | 1,200×3 | 5.5×3 |
| HK 50 | 1,600,000 | 160–320 | 3,420 kg | 1,200×3 | 7.5×3 |
| HK 55 | 1,850,000 | 185–370 | 3,800 kg | 1,400×3 | 11×3 |
| HK 60 | 2,100,000 | 210–420 | 4,200 kg | 1,400×4 | 11×4 |
| HK 65 | 2,500,000 | 250–500 | 4,800 kg | 1,600×4 | 15×4 |
| Standard test conditions: Inlet 37°C · Outlet 32°C · Wet-bulb 24°C. Contact us for alternative conditions. | |||||
Full technical data and pricing: hkmakine.com.tr/urun/su-sogutma-kulesi/
Free Capacity Calculation & Price Quote
Share your process flow rate and temperatures — our engineers will respond the same day.
8. Cooling Tower vs. Chiller — Which to Choose?
Water Cooling Tower
- Heat transfer by evaporation
- Cooling temp: wet-bulb + 3–5°C
- Low investment & low energy consumption
- Superior for large-capacity applications
- Ideal for ±2°C tolerance processes
Chiller
- Mechanical vapour compression cycle
- Fixed 7–12°C, precise temperature control
- High investment & high energy cost
- Ideal for laser, CNC, medical & pharma
- Small–medium capacity precision applications
Hybrid Solution: Many facilities use a cooling tower + chiller combination. The tower handles the bulk load while the chiller serves precision-critical lines. HK Makine can design both systems together.
9. Maintenance, Water Treatment & Legionella Prevention
Cooling tower water treatment is a non-negotiable operational requirement. When neglected, scale build-up, corrosion and Legionella risk escalate rapidly.
- Weekly: Fan motor current, pH & conductivity, spray nozzle check
- Monthly: Fill media cleaning, drift eliminator cleaning, sump bottom cleaning
- Water Treatment: Anti-scalant + corrosion inhibitor + biocide dosing
- Legionella Prevention: Oxidising biocide dosing, periodic water sampling, maintenance log
- Annual Overhaul: Fill media inspection, bearing replacement, performance report
Regulatory note: In Turkey, Legionella risk management plans for open circuit cooling towers are legally mandatory. HK Makine maintenance contracts fully cover these requirements.
10. Industrial Application Areas
Plastics & Rubber
Injection molding mold cooling, extruder cooling, rubber vulcanization press cooling — the largest cooling tower market segment in Turkey.
Metal & Foundry
Induction furnace water cooling, casting mold, rolling mill and CNC machining center cooling systems.
Textile & Dyeing
Dyeing machine cooling water, calendar & compact machine cooling, air-conditioning support.
Chemical, Food & Pharma
Reactor cooling, distillation, food processing lines. Stainless steel closed-circuit cooling towers are required.
Energy & Power Plants
Condenser cooling, cogeneration, diesel generator and renewable energy facility cooling systems.
HVAC & Buildings
Shopping malls, hospitals, hotels, data centers and office complex chiller support cooling towers.
Air Compressor Cooling
Water-cooled air compressor cooling circuits — mini and package-type towers provide compact solutions.
Automotive & Manufacturing
CNC machining, laser cutting, welding machines and general manufacturing line cooling systems.
11. Cooling Tower Prices — What Factors Affect Cost?
- Cooling Capacity (kcal/h): 15 price tiers from mini HK17 to large industrial HK65
- Housing Material: ST37 (economical) → Galvanized (mid-range) → Stainless AISI 304/316L (premium)
- System Type: Open circuit is standard; closed circuit costs 30–60% more due to heat exchanger coil
- Fan & Inverter: VFD drive adds upfront cost but typically pays back within 2–3 seasons
- Custom Production: Non-standard capacities or special material combinations
- Installation & Delivery: Nationwide delivery across all 81 Turkish provinces
Same-day quotation: Provide your model, capacity and housing material preference — we respond the same business day. hkmakine.com.tr · +90 536 037 3281
12. Frequently Asked Questions
Request a Quote — Free Technical Consultation
Open circuit, closed circuit, package type or custom production — our engineers are ready to help you find the right metal cooling tower solution. Delivery available worldwide from our Gaziantep factory.