--- title: "Evaporative Air Cooler Centrifugal Series" url: https://tiercooling.com/posts/evaporative-air-cooler-centrifugal-series/ date: 2025-12-22 modified: 2026-09-28 lang: en author: "info@tiercooling.com" description: "You are here: Home Evaporative Air Cooler Centrifugal Series The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent linkage control system, a patented product..." categories: - "News" image: https://tiercooling.com/wp-content/uploads/2026/09/news-855.jpg word_count: 2148 --- # Evaporative Air Cooler Centrifugal Series - [ You are here: Home ](https://rundongfang.com/) - ![RDF-30B](https://rundongfang.com/wp-content/uploads/RDF-30B-768x768.jpg) ![RDF-30C](https://rundongfang.com/wp-content/uploads/RDF-30C-768x768.jpg) # Evaporative Air Cooler Centrifugal Series The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent linkage control system, a patented product independently developed in-house. Rundongfang provides customers with a 26000 air volume permanent magnet evaporative air cooler. Environmentally friendly air conditioners, also known as evaporative air coolers, water air conditioners, or water-cooled central air conditioners, are cooling and ventilation units that integrate cooling, ventilation, anti-pollution, and odor removal. In addition to providing fresh air and lower temperatures for factory workshops, public places, and commercial entertainment venues, environmentally friendly air conditioners have another key feature: energy saving and environmental protection! This is a brand-new, upgraded green product with no compressor, no Freon, and no copper tubing. Its key component is the evaporative cooling water pad (a multi-layer corrugated fiber composite) and a 1.1KW main motor, consuming only 1/8 of the electricity of traditional central air conditioning, delivering more substantial energy savings across all industries. 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Through the master unit’s touchscreen, it enables single-unit control, zone control, and full control. The master and slave units communicate via standard RS485, and the system supports external temperature and humidity sensors for intelligent temperature and humidity control, making it ideal for large factories, warehouses, centralized control and similar applications. ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-2026-002.jpg) Fast power on/off: powering units on/off takes 1 minute per unit; switching 32 units on or off simultaneously saves 32 minutes. One-touch control of 32 units: quickly adjust multiple operating modes such as ventilation, cooling, and oxygen enrichment—say goodbye to the era of one-controller-per-unit. Easy fault troubleshooting: the intelligent cluster multi-unit control system features fault inspection indicators and automatic clearing functions, making faults easy to diagnose and improving maintenance efficiency. All-in-one multifunctionality: the intelligent cluster multi-unit control system integrates 12 major functions in one, built with cutting-edge industry technology—safe, efficient, time-saving, and worry-free. ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0007-1024x313.jpg) ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0002.jpg) | Model | Voltage/Frequency (V/HZ) | Max Airflow (m3/h) | Rated Current (A) | Power (KW) | Overall Dimensions (mm) | Air Outlet Dimensions (mm) | Net Weight (KG) | Water Tank Capacity (L) | Controller Type | | ----- | ------------------------ | ------------------ | ----------------- | ---------- | ----------------------- | -------------------------- | --------------- | ----------------------- | --------------- | | RDF18A-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LCD Panel | | RDF18A-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LED Panel | | RDF18A/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LCD Panel | | RDF18B-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LCD Panel | | RDF18B-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LED Panel | | RDF18B/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LCD Panel | | RDF18C-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LCD Panel | | RDF18C-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LED Panel | | RDF18C/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LCD Panel | - Unique high-density rare-earth permanent magnet inner rotor structure—never detaches and never demagnetizes. - Direct servo drive: brushless, quiet, maintenance-free, and free of oil contamination. - Low power consumption, high power density, compact size, light weight, natural cooling, and low temperature rise. - Sealed structural design with IP64 protection rating. - Consumes only 1 kWh per hour to ventilate and cool a 100–150㎡ workshop. - Open-type hose water distribution tray system delivers even, smooth water flow. - Equipped with overvoltage (undervoltage), overcurrent, and phase-loss protection, plus automatic (manual) cleaning function. - Innovative speed regulation technology allows airflow adjustment according to actual needs. The industry-exclusive fan reversal function enables switching from air supply to air extraction instantly. - Three air outlet configurations—top, bottom, and side discharge—can be applied to engineering needs in various environments. - Made of PP eco-friendly engineering plastic: anti-aging, UV-resistant, with a long service life. ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0011.jpg) ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0008.jpg) The core cooling component of Rundongfang air conditioners is a high-efficiency evaporative cooling pad—a “natural multi-layer corrugated plant fiber composite.” Based on the natural physical principle that “water evaporation absorbs heat, and evaporation area affects evaporation efficiency,” the fan delivers air indoors while fresh outdoor air passes through the water-soaked cooling pad, where the air fully contacts the water and absorbs sensible heat from the air. This achieves cooling, ventilation, dust removal, and increased indoor oxygen content, making it especially suitable for high-temperature and densely populated environments. Main application areas: Industrial: workshops of automobile plants, hardware plants, electronics plants, machinery plants, electrical appliance plants, motorcycle plants, leather goods factories, garment factories, pharmaceutical plants, textile mills, shoe factories, plastics plants, and other factories. Commercial: shopping malls, internet cafés, schools, bus stations, gyms, outdoor sports venues, restaurant kitchens, car washes, and more. Agricultural: agricultural-specific models can be used in various greenhouses, flower farms, livestock farms, and more. ![](https://rundongfang.com/wp-content/uploads/products-info-002.png) ### Low Investment, High Efficiency Compared with installing a central air conditioning system under the same conditions and area, the cost of this air conditioning equipment is only a fraction of the total investment of central air conditioning. ![](https://rundongfang.com/wp-content/uploads/products-info-004.png) ### Low Power Consumption — Only 1 kWh per Hour When installed in the same area, compared with a central air conditioning system, the eco-friendly equipment consumes only a fraction of the electricity. ![](https://rundongfang.com/wp-content/uploads/products-info-006.png) ### Excellent Air Quality “Run Dong Fang” integrates ventilation, air exchange, dust removal, and cooling in one unit. It increases the oxygen content of the space and improves work efficiency, with a choice of natural air supply or spot cooling. ![](https://rundongfang.com/wp-content/uploads/products-info-005.png) ### Powerful Cooling Effect In southern regions, the unit generally achieves a cooling effect of 4℃–10℃; in hot and dry regions, it can cool by 4℃–15℃, and the cooling is rapid. ![](https://rundongfang.com/wp-content/uploads/products-info-007.png) ### High Air Volume, Long Air Throw The large air volume ranges from 18,000 to 60,000 m³/h and can be selected according to customer requirements. Our units deliver high air pressure and long-distance air throw. ![](https://rundongfang.com/wp-content/uploads/products-info-008.png) ### Stable Performance, Reliable Quality Adopts a 100mm-thick “5090 evaporative cooling pad” for powerful cooling, together with three-blade forward-swept axial fan blades for low noise and high efficiency. ![](https://rundongfang.com/wp-content/uploads/products-info-003.png) ### Humidity Control Regulates humidity in workplaces where increased air humidity is required. Air change reference for various settings Definition of air change rate: Air change rate (changes/hour) = Total indoor supply airflow (m3/h) ÷ [Indoor area (㎡) × Indoor height (m)]; General environments require 30–40 air changes per hour; Crowded public places require an air change rate of 30–40 times per hour; Crowded and high-temperature locations or production workshops require 40–50 air changes per hour; High-temperature production workshops with severe pollution require an air change rate of 50–60 times per hour; In the relatively humid southern regions, the air change rate should be appropriately increased, while in the hotter northern regions it may be appropriately reduced. The calculation method for the number of units depends on the type of air outlet required on site; Model and quantity selection offers flexibility based on site conditions; Number of units = Venue volume × Air change rate ÷ Actual airflow of the unit; Spot cooling should be configured separately according to actual conditions, and the total airflow may be appropriately reduced; Indoor air supply ducts must match the model of the air cooler. Based on the actual installation environment and the required number of air outlets, design suitable air supply ducts and outlets. - Excellent cooling effect: rapidly lowers indoor temperature - Excellent ventilation: effective ventilation and air delivery, with high indoor oxygen content - Excellent odor removal: promptly eliminates and reduces odors - Excellent air purification: effectively purifies indoor airborne dust - Excellent removal of harmful gases: quickly reduces harmful substances indoors ![](https://rundongfang.com/wp-content/uploads/products-info-009.png) ![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0009.jpg) High evaporation efficiency: the heat exchange area is approximately 100 times the surface area, with excellent water absorption and an evaporation efficiency of over 80%, delivering superior cooling performance. Low air resistance: the multi-layer composite structure and special bonding angle minimize air resistance, resulting in high air volume and long air delivery distance. Excellent antibacterial performance: tested by professional authorities, it effectively inhibits bacterial growth and keeps the air fresh and natural. Algae growth prevention: tested by professional authorities, it achieves Class I anti-algae performance and effectively prevents algae growth. Healthy and eco-friendly: compliant with RoHS and Reach environmental standards, free of toxic substances that may cause allergies, non-toxic and odorless. Durable and long-lasting: tested by authoritative institutions, it is corrosion-resistant, easy to clean, and has a long service life. ![](https://rundongfang.com/wp-content/uploads/products-info-011.png) #### 6T Operating System High-efficiency thickened cooling pad design Polymer material and space cross-linking technology: solid in texture, eco-friendly, pollution-free, easy to clean, free of pungent odors, and non-toxic and harmless to the human body; adopts a multi-layer corrugated evaporative cooling pad with a heat exchange area close to 100 times the surface area; the cooling pad is 100mm thick, providing a large contact area, higher evaporation efficiency, and better cooling performance. Innovative frequency conversion control design 220V variable frequency speed control technology with soft start and smooth operation. Anti-drip streamlined grille design The grille features an eaves-shaped anti-drip design that effectively prevents rainwater from entering, ensuring safe use. Multi-layer anti-clogging filter design The filter adopts a multi-layer anti-clogging filter design with increased filtering area, making it more efficient and cleaner. Low-failure, high-humidity-resistant motor High efficiency, low noise, and longer service life; cast iron housing with good heat dissipation and low energy consumption; Low-failure, high-humidity-resistant, corrosion-resistant all-copper core motor with stable operation. CFD simulation-based fluid dynamics design Large air volume, higher air pressure, lower operating noise, and low energy consumption; Air duct design based on simulated airflow fields greatly reduces air resistance and noise. ![](https://rundongfang.com/wp-content/uploads/products-info-013.png) #### 6P Super Purification System High-efficiency eco-friendly odorless cooling pad Polymer material and space cross-linking technology: solid in texture, non-toxic, harmless, and odorless. Excellent filtration performance, high evaporation capacity, great cooling effect, and easy to clean. High-efficiency multi-layer anti-clogging filter design Multi-layer anti-clogging filter design with multiple filtration stages, effectively filtering dust, particles, and more. Open-type hose water distribution tray system Brand-new water spray components with a unique water storage tank design, delivering even water distribution and never clogging. Multi-function cleaning design Cleaning function can be performed both at startup and shutdown for more thorough cleaning. High-quality durable water pump design Wide-voltage, wide-frequency, high-efficiency, wear-resistant premium water pump with stable water pressure and low temperature rise. Capable of 24-hour continuous operation The water pump uses an all-copper wire motor with low noise, low vibration, fast heat dissipation, stable temperature rise, long life, and few failures. Energy-free automatic water refill design Adopts an energy-free buoyancy-based automatic water refill system with ultra-low failure rate, high stability, and quality proven through 100,000 cycles, making maintenance easier. ![](https://rundongfang.com/wp-content/uploads/products-info-012.png) #### 6D Three-Dimensional Protection System High-Strength Weather-Resistant Housing Design The housing is made of weather-resistant polymer with UV resistance, corrosion resistance, anti-aging and anti-deformation properties. Innovative PVC Cooling Pad Edge Wrapping Design More reliable fixing, less likely to fall off; does not easily damage the cooling pad surface, with no risk of water leakage. High-Strength Column Design The unit features a high-strength column design with a sturdy structure, high strength and strong load-bearing capacity. One-Piece Molded Chassis Design Adopts one-piece molded, inclined design with high strength and excellent cleaning performance. Ergonomic Handle Design on the Bottom Basin The handle position fits the common hand shape, with a smooth contact surface. Convenient and safe to carry. Sturdy and Durable Motor Bracket Design The motor bracket is made of sturdy, durable cast iron with strong torsion resistance, producing no resonance noise for safe, longer-lasting operation; the bolt holes fixing the motor bracket to the chassis use a copper-insert integrated injection molding design for a more secure connection, safer use and greater durability, and are also convenient for maintenance.