---
title: "Evaporative Air Cooler Axial Fan Series"
url: https://tiercooling.com/posts/evaporative-air-cooler-axial-fan-series/
date: 2025-12-22
modified: 2026-09-28
lang: en
author: "info@tiercooling.com"
description: "Current location: Home Axial Fan Series Evaporative Air Cooler The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent joint control system — a patented..."
categories:
  - "News"
image: https://tiercooling.com/wp-content/uploads/2026/09/news-856.jpg
word_count: 2175
---

# Evaporative Air Cooler Axial Fan Series

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[

Current location: Home

](https://rundongfang.com/)

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![RDF-300A](https://rundongfang.com/wp-content/uploads/RDF-300A-768x768.jpg)

![RDF-300C](https://rundongfang.com/wp-content/uploads/RDF-300C-768x768.jpg)

![RDF-300B](https://rundongfang.com/wp-content/uploads/RDF-300B-768x768.jpg)

# Axial Fan Series Evaporative Air Cooler

The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent joint control system — a patented product independently developed in-house.

Rundongfang provides customers with a 26000 air volume permanent magnet evaporative air cooler. Eco-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, dust prevention, and odor removal. In addition to providing fresh air and lowering temperatures in factory workshops, public places, and commercial entertainment venues, eco-friendly air conditioners have another key feature — energy saving and environmental protection! This is a brand-new green product with no compressor, no freon, and no copper tubing. Its key components — the evaporative cooling water pad (a multi-layer corrugated fiber composite) and a 1.1KW main motor — consume only 1/8 of the electricity used by traditional central air conditioners, delivering truly substantial energy savings across all industries.

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### Industrial Large Fans

[Permanent Magnet Servo Direct-Drive Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/pmssm-hvls-fan)
- [Permanent Magnet Large Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/big-hvls-fan)
- [Energy-Saving Industrial Large Fan](https://rundongfang.com/industrial-ceiling-fans/jie-neng-gong-ye-da-feng-shan)
- [7.2m Large Industrial Ceiling Fan](https://rundongfang.com/industrial-ceiling-fans/7-2m-hvls-fan)
- [Industrial HVLS Fans for Factory Workshops](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-factory)
- [Industrial HVLS Fans for Logistics & Warehousing](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-warehouse)
- [Industrial HVLS Fans for Large Supermarkets & Malls](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-market-mall)
- [Industrial HVLS Fans for Amusement Venues](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-playground)
- [Industrial HVLS Fans for Livestock Farming](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-livestock)
- [Industrial HVLS Fans for Sports & Fitness Centers](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-gym)

- [Permanent Magnet Servo Direct-Drive Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/pmssm-hvls-fan)
- [Permanent Magnet Large Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/big-hvls-fan)
- [Energy-Saving Industrial HVLS Fan](https://rundongfang.com/industrial-ceiling-fans/jie-neng-gong-ye-da-feng-shan)
- [7.2m Large Industrial Ceiling Fan](https://rundongfang.com/industrial-ceiling-fans/7-2m-hvls-fan)
- [Industrial HVLS Fans for Factory Workshops](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-factory)
- [Industrial HVLS Fans for Logistics & Warehousing](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-warehouse)
- [Industrial HVLS Fans for Large Supermarkets & Malls](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-market-mall)
- [Industrial HVLS Fans for Amusement Venues](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-playground)
- [Industrial HVLS Fans for Livestock Farming](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-livestock)
- [Industrial Fans for Sports & Fitness Centers](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-gym)

### Evaporative Air Coolers

- [Evaporative Air Cooler 18 Series – Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-top)
- [Evaporative Air Cooler 18 Series – Side Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-side)
- [Evaporative Air Cooler 18 Series – Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-bottom)
- [Evaporative Air Cooler 23 Series – Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-top)
- [Evaporative Air Cooler 23 Series – Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-bottom)
- [Portable Evaporative Air Cooler 18Y Series](https://rundongfang.com/evaporative-air-cooler/portable-evaporative-air-cooler)
- [Evaporative Air Cooler – Centrifugal Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-centrifugal-series)
- [Evaporative Air Cooler – Axial Fan Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-axial-series)
- [Evaporative Air Cooler 26 Series](https://rundongfang.com/evaporative-air-cooler/zheng-fa-shi-leng-feng-ji-26)
- [Permanent Magnet Evaporative Air Cooler](https://rundongfang.com/evaporative-air-cooler/pmssm-evaporative-air-cooler)

- [Evaporative Air Cooler 18 Series Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-top)
- [Evaporative Air Cooler 18 Series Side Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-side)
- [Evaporative Air Cooler 18 Series Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-bottom)
- [Evaporative Air Cooler 23 Series Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-top)
- [Evaporative Air Cooler 23 Series Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-bottom)
- [Portable Evaporative Air Cooler 18Y Series](https://rundongfang.com/evaporative-air-cooler/portable-evaporative-air-cooler)
- [Evaporative Air Cooler Centrifugal Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-centrifugal-series)
- [Evaporative Air Cooler Axial Fan Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-axial-series)
- [Evaporative Air Cooler 26 Series](https://rundongfang.com/evaporative-air-cooler/zheng-fa-shi-leng-feng-ji-26)
- [Permanent Magnet Evaporative Air Cooler](https://rundongfang.com/evaporative-air-cooler/pmssm-evaporative-air-cooler)

### Energy-Saving Low-Carbon Air Conditioning

- [Energy-Saving Low-Carbon Air Conditioner 05C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-05c)
- [Energy-Saving Low-Carbon Air Conditioner 08C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08c)
- [Energy-Saving Low-Carbon Air Conditioner 08F/C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fc)
- [Energy-Saving Low-Carbon Air Conditioner 08F/S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fs)
- [Energy-Saving Low-Carbon Air Conditioner 08S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08s)
- [Energy-Saving Low-Carbon Air Conditioner 10C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-10c)

- [Energy-Saving Low-Carbon Air Conditioner 05C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-05c)
- [Energy-Saving Low-Carbon Air Conditioner 08C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08c)
- [Energy-Saving Low-Carbon Air Conditioner 08F/C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fc)
- [Energy-Saving Low-Carbon Air Conditioner 08F/S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fs)
- [Energy-Saving Low-Carbon Air Conditioner 08S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08s)
- [Energy-Saving Low-Carbon Air Conditioner 10C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-10c)

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-2026-001.jpg)

The Rundongfang patented intelligent centralized control system is a multi-unit control system integrating one master unit with up to 32 connected slave units. Through the master unit’s touchscreen, it enables single-unit control, zone control, and full control of all units. The master and slave units communicate via the RS485 standard and support external temperature and humidity sensors for intelligent temperature and humidity control, making it ideal for large factories, warehouses, and centralized control applications.

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-2026-002.jpg)

Fast Start-Up and Shutdown: One minute per unit for start-up or shutdown; powering 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 controlling each unit individually.

Easy Troubleshooting: The intelligent cluster multi-unit control system features fault inspection indicators and automatic clearing functions, making faults easy to troubleshoot and maintenance highly efficient.

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, never demagnetizes.
- Direct servo drive, brushless and quiet, maintenance-free, with no oil contamination.
- Low power consumption, high power density, compact size, light weight, natural cooling, and low temperature rise.
- Sealed structure design with IP64 protection rating.
- Consumes only 1 kWh per hour for air exchange and cooling of a 100–150 m² workshop.
- Open-type hose water distribution tray system delivers even, smooth water flow.
- Equipped with over/under-voltage, overcurrent, and phase-loss protection, plus automatic (manual) cleaning function.
- Innovative speed regulation technology allows air volume to be adjusted to actual needs. An industry-first fan reversal function enables instant switching from air supply to air extraction.
- 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: aging-resistant, 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 the 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 into the room 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 crowded environments.

Main application areas:
Industrial: workshops of automotive plants, hardware plants, electronics plants, machinery plants, electrical appliance plants, motorcycle plants, leather goods plants, garment factories, pharmaceutical plants, textile mills, footwear factories, plastics plants, and more.
Commercial: shopping malls, internet cafés, schools, stations, gyms, outdoor sports venues, restaurant kitchens, car washes, etc.
Agricultural: agricultural-specific models can be used in various greenhouses, flower farms, livestock breeding farms, and more.

![](https://rundongfang.com/wp-content/uploads/products-info-002.png)

### Low Investment, High Efficiency

Compared with central air conditioning installed under the same conditions and area, the cooling equipment costs only a fraction of the total investment required for central air conditioning.

![](https://rundongfang.com/wp-content/uploads/products-info-004.png)

### Low Power Consumption — Only 1 kWh per Hour

When compared with central air conditioning installed over the same area, the eco-friendly cooling unit consumes only a fraction of the electricity used by central air conditioning.

![](https://rundongfang.com/wp-content/uploads/products-info-006.png)

### Excellent Air Quality

“Rundongfang” integrates ventilation, air exchange, dust removal, and cooling in one unit, increasing the oxygen content of the space and improving work efficiency, with the choice of natural airflow or targeted 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°C-10°C, while in hot, dry areas it can achieve 4°C-15°C, with rapid cooling performance.

![](https://rundongfang.com/wp-content/uploads/products-info-007.png)

### Large Airflow, Long Air Delivery Distance

The large airflow reaches 18000 to 60000 m³ per hour and can be selected according to customer requirements. Our units deliver high air pressure and long-distance air supply.

![](https://rundongfang.com/wp-content/uploads/products-info-008.png)

### Stable Performance, Reliable Quality

Equipped with a 100mm-thick “5090 evaporative cooling pad” for strong cooling capacity, and featuring 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 that require increased air moisture.

Reference air change rates for various applications
Definition of air change rate:

Air change rate (times/hour) = total indoor air supply volume (m3/h) ÷ [indoor area (㎡) × indoor height (m)];
General environments require an air change rate of 30-40 times per hour;
Public places with dense crowds require an air change rate of 30-40 times per hour;
Places with dense crowds and high temperatures, or production workshops, require an air change rate of 40-50 times per hour;
High-temperature production workshops with severe pollution require an air change rate of 50-60 times per hour;
In the more humid southern regions, the air change rate should be appropriately increased, while in the hotter northern regions it can be appropriately reduced.

The method for calculating the number of units depends on the terminal air outlet type required on site;
The selection of models and quantities offers flexibility based on site conditions;
Number of units = site volume × air change rate ÷ actual air supply volume of the unit;
Spot cooling should be selected separately according to actual conditions, and the total air volume can 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 reduces indoor temperature
- Excellent ventilation effect: effective ventilation and air supply, high indoor oxygen content
- Excellent odor removal: promptly eliminates and reduces odors
- Excellent air purification: effectively purifies indoor air dust
- Excellent harmful gas removal: 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 outstanding cooling performance.

Low air resistance: The multi-layer composite structure features a special bonding angle that minimizes air resistance, resulting in high airflow and long air delivery distance.

Excellent antibacterial performance: Tested by authoritative institutions, it effectively inhibits bacterial growth and keeps the air fresh and natural.

Algae growth prevention: Tested by professional institutions, it achieves Grade 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, and 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 materials with spatial cross-linking technology: sturdy texture, eco-friendly, pollution-free, easy to clean, free of pungent odors, and non-toxic and harmless to the human body. The multi-layer corrugated evaporative cooling pad provides a heat exchange area nearly 100 times the surface area. With a pad thickness of up to 100mm, the contact area is large, delivering 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-clog filter design
The filter adopts a multi-layer anti-clog filtration design with an increased filtration area, offering greater efficiency and cleanliness.
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 for stable operation.
CFD (computational fluid dynamics) simulation design
Large air volume, higher air pressure, lower operating noise, and low energy consumption;
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 materials with spatial cross-linking technology: sturdy texture, non-toxic, harmless, and odorless. Excellent filtration performance, high evaporation capacity, great cooling effect, and easy to clean.
High-efficiency multi-layer anti-clog filter design
Multi-layer anti-clog filtration design with multiple filtering stages, effectively filtering dust, particles, and more.
Open-type hose water distribution tray system
Brand-new water spraying components with a unique water reservoir design, ensuring even water distribution and no clogging ever.
Multi-function cleaning design
Cleaning can be performed in both power-on and power-off states for more thorough cleaning.
High-quality, durable water pump design
Wide-voltage, wide-frequency, high-efficiency, wear-resistant premium pump with stable water pressure and low temperature rise.
Capable of 24-hour continuous operation
The pump uses an all-copper wire motor with low noise, low vibration, fast heat dissipation, stable temperature rise, long service life, and few failures.
Zero-energy automatic water replenishment design
Features a zero-energy buoyancy-based automatic water replenishment system with ultra-low failure rate and high stability—reliable for 100,000 operating cycles, with easier maintenance.

![](https://rundongfang.com/wp-content/uploads/products-info-012.png)

#### 6D Three-Dimensional Protection System

High-Strength Weather-Resistant Casing Design
The body is made of weather-resistant polymer with UV resistance, corrosion resistance, anti-aging and anti-deformation properties.
Innovative PVC Cooling Pad Edge-Sealing 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 solid structure, high strength and strong load-bearing capacity.
One-Piece Molded Chassis Design
Adopts an integrally molded, tilted design for high strength and excellent cleaning performance.
User-Friendly Handle Design on the Bottom Tank
The handle position fits most hand shapes, 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 reliable, long-lasting operation; the bolts fixing the motor bracket to the chassis use punched holes with copper inserts in an integrated injection-molded design for a more secure connection. Safe to use and more durable; easy to maintain.