Shandong Wanju Agricultural and Animal Husbandry Machinery Equipment Co., Ltd.

We are a leading direct manufacturer specializing in industrial and agricultural ventilation and cooling equipment. We welcome customers from all over the world to visit our factory. We also support real-time video factory audits via WhatsApp, WeChat, or Zoom at your convenience.

1. Permanent Magnet Negative Pressure Exhaust Fan. The entire housing, including motor brackets, blades, and shutters, is made of 304 stainless steel for superior corrosion and oxidation resistance. It features a high-efficiency, energy-saving permanent magnet motor with a direct-drive system, eliminating the need for belts for more stable operation and higher airflow. Perfectly suited for exhausting ammonia and moisture in livestock farms. Wanju's specialized stainless steel axial fans deliver airflow from 18,000 to 55,800 m³/h, with total pressure efficiency increased to 78%.

2. FRP Exhaust Fan (Cone Type): Constructed from high-strength fiberglass reinforced plastic (FRP), this fan is corrosion-resistant and anti-aging, making it ideal for high-humidity and high-ammonia livestock environments. The cone-shaped design increases airflow and enhances ventilation efficiency, effectively exhausting ammonia, heat, and dust while drawing in fresh air for cooling and air exchange. These fans are designed for longitudinal ventilation in broiler houses, particularly during high-temperature summers or when ammonia concentrations are peak. They can be integrated with evaporative cooling pad systems for significant temperature reduction. Wanju's FRP cone fans provide an airflow capacity of 32,000 to 45,000 m³/h, making them suitable for broiler houses of various scales.

1. Direct-Drive Exhaust Fan

Advantages:

Stable and Reliable Operation: The motor drives the impeller directly, eliminating the belt transmission system. This removes the risk of belt wear, slippage, or breakage, ensuring high long-term stability and a low failure rate.

Low Maintenance Costs: There is no need for regular belt inspections or replacements. Daily maintenance is primarily limited to impeller cleaning and motor checks, significantly reducing the maintenance workload.

High Energy Efficiency: Transmission efficiency is nearly 100%, resulting in minimal energy loss. Long-term operation can effectively reduce electricity costs.

Low Noise: Without belt friction and vibration, the operating noise is relatively low, making it suitable for noise-sensitive farm environments.

Disadvantages:

Limited Speed Adjustment Flexibility: The rotational speed is typically fixed, making it difficult to change airflow and pressure by simply adjusting pulleys. Speed control relies on variable frequency motors, which increases costs.

Higher Start-up Impact: Since the motor drives the impeller directly, the load impact during startup is significant, requiring the selection of highly reliable motors and control systems.

2.Belt-Drive Exhaust Fan

Advantages:

Flexible Speed Adjustment: By changing the pulleys or adjusting belt tension, the impeller speed can be easily modified to meet different ventilation needs, making it suitable for farms that require frequent airflow adjustments.

Smooth Startup: The belt drive acts as a buffer against startup impact, reducing mechanical stress on the motor and impeller and extending equipment life.

Lower Initial Cost: The structure of the belt transmission system is simple, and the equipment procurement cost is generally lower than that of direct-drive models.

Disadvantages:

High Maintenance Costs: Belts are prone to wear and aging, requiring regular inspections, tension adjustments, or replacements. This high maintenance frequency increases long-term operating costs.

Lower Transmission Efficiency: Belt drives involve energy loss, with efficiency typically ranging from 80% to 90%, leading to higher energy consumption over long-term operation.

Higher Noise: Belt friction and vibration generate additional noise, which may impact the farm environment.

Comprehensive Advice: If the farm's ventilation requirements are stable and focus is placed on long-term operational reliability, low maintenance costs, and low energy consumption, the direct-drive exhaust fan is the superior choice, especially for large-scale, continuously operating livestock facilities.

If the farm needs to adjust airflow frequently or is sensitive to initial costs and can accept regular maintenance, the belt-drive exhaust fan offers better flexibility and adaptability.

Are you looking for a system that automatically adjusts fans based on the environment to save on electricity costs? The Wanju Intelligent Temperature Control Box features built-in standard IoT communication interfaces and a modular design. It perfectly achieves the remote monitoring and automatic speed regulation you need most, while also providing room for future system upgrades. It is currently the best choice on the market for balancing forward-looking technology with operational stability.

We do not pursue hollow AI concepts; what Wanju provides is an "industrial-grade reliable brain" that allows you to monitor in real-time via your smartphone and automatically adjusts fan speeds based on environmental conditions to truly help you save energy. 

48-inch farm exhaust fan prices vary depending on brand, configuration, order quantity, and regional differences:

Basic Galvanized Fans are the most affordable, suitable for general farm ventilation needs. Made of galvanized steel, they meet basic airflow requirements. FRP (Fiberglass) Fans are mid-range in price, featuring corrosion resistance and a long service life, making them ideal for humid or corrosive environments; some models include energy-saving or low-noise designs. Variable Frequency Intelligent Fans are higher-priced, equipped with VFD motors and smart control systems that automatically adjust airflow based on environmental needs, offering significant energy savings for farms requiring high ventilation precision. For a precise quote, please contact us directly at Tel/WA/Zalo: 008613356783319, Email: poultrysolutions0818@gmail.com.

Regarding your inquiry about the cooling capacity of a 10,000 CFM fan, here is a quick reference for your engineering team:

Cooling Capacity: Under standard conditions with a 10°F temperature lift, this fan provides approximately 108,000 BTU/hr (or 31 kW) of heat removal.

Regional Accuracy: We provide specifications in both Imperial and Metric units to match your local project standards. However, please note that "Static Formulas" often vary due to:

A. Altitude (Air Density Coefficient): "The coefficients in the formula (1.08 or 1/3000) are based on standard air density at sea level. If your farm is located in a high-altitude area (such as the mountainous regions of Kazakhstan), the air is thinner, and the actual cooling capacity will experience a 5%-15% reduction."

B. Humidity Environment (Sensible vs. Latent Heat): "These two formulas calculate 'sensible heat' (the cooling of dry air). In high-humidity regions like Vietnam or Indonesia, if cooling pads are used, the air heat exchange will involve latent heat changes. Relying solely on temperature difference calculations will result in deviations."

C. Dynamic Environment (Temperature Fluctuations): "$\Delta T$ (temperature difference) varies throughout the day. This is why we recommend using a temperature control box with automatic speed regulation. It can automatically adjust the 10,000 CFM airflow based on real-time temperature differences, ensuring a constant environment and saving on electricity costs."

Our Solution: > As a factory focused on international markets, our Wanju fans are not just about CFM numbers. We provide Variable Speed Control Systems that automatically adjust the airflow based on these environmental deviations, ensuring your livestock stays in the "Comfort Zone" while reducing energy waste.

1. Fan Selection: We recommend prioritizing suspended fans with high airflow and stable air velocity, such as the 72-inch Cyclone cattle shed fan. The 72-inch cattle shed fan is equipped with high-strength aluminum alloy blades and adjustable deflectors, effectively increasing airflow and optimizing airflow direction to ensure uniform and stable air velocity within the cattle shed.

Performance Reference: The fan should achieve an air velocity of 3 m/s or more at a distance of 6 meters to ensure a consistent air velocity of 2.5 m/s across different locations within the cattle shed. Simultaneously, the fan's power and energy consumption must be matched to the size of the cattle shed to avoid excessive energy consumption.

2. Installation Height: The recommended height of the bottom of the fan from the ground is 2.3-2.4 meters. This ensures airflow covers the cows' activity area while avoiding interference with the normal operation of equipment such as manure removal trucks.

Installation Angle: The fan installation angle should be offset from the vertical by 17°-25° to create relay airflow and prevent airflow interference. The spacing between adjacent fans is generally around 6 meters, but can be adjusted according to the barn's width and the fan's performance.

Coverage Area: Ensure the fans cover key areas within the barn, such as feeding passages, bedding, and waiting areas. For large barns, a multi-row fan layout can be used to improve ventilation uniformity.

3. Cowshed Structure: If the cowshed is open or semi-open, a combination of natural and mechanical ventilation should be prioritized. Airflow paths can be optimized by adjusting the installation position and angle of the fans. For enclosed cowsheds, it is essential to ensure that fans and cooling equipment such as evaporative cooling pads work in tandem to improve ventilation efficiency.

Climatic Conditions: In hot and humid areas, it is recommended to use a sprinkler cooling system, applying the spray first followed by airflow to accelerate heat dissipation from the cows. Simultaneously, it is crucial to maintain suitable humidity levels inside the cowshed to avoid affecting ventilation.

Selecting suspended cowshed fans with high air volume and stable wind speed, and rationally planning the installation height, angle, and spacing, while optimizing the ventilation scheme based on the cowshed structure and climatic conditions, can effectively maintain a wind speed of 2.5 meters per second in the dairy farm, improving cow comfort and reducing the risk of heat stress.

1. Evaporative Cooling Pad System

Advantages: In the hot and arid climate of Saudi Arabia, this system effectively utilizes the principle of evaporative cooling—where air absorbs heat as water evaporates—to lower the temperature of incoming air to near the wet-bulb temperature. It delivers significant cooling results, typically reducing temperatures by 5–10°C. Operational costs are relatively low, with energy consumption primarily driven by fans and water pumps, making it well-suited for use in large-scale greenhouses. When integrated with a shading system, it can further enhance cooling efficiency while simultaneously increasing air humidity—a condition beneficial for the growth of certain crops.

Limitations: The cooling process inevitably increases humidity within the greenhouse; if humidity levels become excessively high, it may trigger crop diseases, necessitating the implementation of concurrent ventilation or dehumidification measures. Furthermore, the cooling pads require regular maintenance to prevent clogging caused by salt accumulation, and the system places high demands on water quality, requiring the use of a clean water source.

2. High-Pressure Spray Systems

Advantages: The mist droplets are small (10–15 microns), allowing for rapid evaporation; this enables quick absorption of heat from the air and high cooling efficiency—in some cases, reducing temperatures by 3–8°C. Water consumption is relatively low, making the system suitable for regions with scarce water resources. Furthermore, by precisely controlling the timing and volume of spraying, the system allows for flexible adjustment of both cooling and humidification. It places minimal demands on the greenhouse structure, eliminating the need to construct dedicated wet-wall structures—as is required for wet-pad systems—thereby offering greater installation flexibility.

Limitations:The system requires the installation of high-pressure pumps and pressure-resistant piping, resulting in higher initial investment costs and greater operational energy consumption. If the spraying is uneven or the droplets fail to evaporate completely, the crop canopy may become wet, increasing the risk of plant diseases; consequently, the system must be paired with effective ventilation.

If the greenhouse area is large, the goal is low-cost operation, and a moderate increase in humidity is acceptable, a wet-pad system is the superior choice—particularly for cultivating crops with high humidity tolerance. Conversely, if greenhouse space is limited, water resources are scarce, or precise humidity control is required, a high-pressure spray system is more appropriate, provided that uniform spraying and adequate ventilation conditions can be ensured. In practical applications, a hybrid approach combining both systems is also feasible; for instance, utilizing the wet-pad system during peak heat periods for rapid cooling, while employing the high-pressure spray system to fine-tune humidity levels, thereby achieving optimal environmental control.

In large-scale industrial facilities, ventilation fans boasting the highest energy efficiency ratios (CFM/Watt) typically fall into the High-Volume, Low-Speed (HVLS) fan category—particularly those utilizing Permanent Magnet Synchronous Motor (PMSM) technology. However, in practice, the actual energy efficiency of specific HVLS fans can be influenced by various factors, including fan design, motor efficiency, and the installation environment.

Wanju has dedicated years to specializing in the manufacturing of industrial ventilation equipment; our HVLS industrial ceiling fans represent a brand-new product category specifically engineered to meet the demands of modern factory layouts.

Precisely because this product line was developed as an entirely new project—unburdened by legacy models or outdated manufacturing processes—the entire unit was designed from the ground up to adhere directly to the industry's current highest energy efficiency standards and incorporate the latest energy-saving technologies.

From highly efficient, energy-saving motors and aerodynamically optimized blades to low-loss transmission structures, the entire system features a new generation of energy-efficient components, establishing a benchmark for high energy efficiency right from the outset.

We have built our reputation on a foundation of quality and energy efficiency. We maintain rigorous control over material selection, manufacturing processes, and factory inspection standards; we never publish inflated specifications, but instead deliver tangible performance that places us in the top tier of energy efficiency within our class—thereby providing industrial workshops with a stable, long-term guarantee of energy savings and cost reduction.

Yes, we have over a decade of experience supplying large-scale projects globally.  Whether you are building a modern 10,000-head dairy barn, an automated poultry farm, or a heavy-duty industrial warehouse, our engineering team can provide customized ventilation layouts and full-scale product supply.

Yes, we offer comprehensive OEM and ODM services. We can customize your brand logo (prominenttions (such as custly featuring your brand or MASTER logo design), adjust casing colors, and modify product specificaom motor brands, voltages, and blade materials) to suit your local market demands. Please share your high-resolution logo files and specific requirements with us to get started.

Absolutely. We understand that electrical standards vary significantly across the globe (e.g., Southeast Asia, South America, Middle East, and Europe). We can customize the motors of our axial exhaust fans and evaporative air coolers to match your local power grid, including options like 380V/50Hz/3-Phase, 220V/60Hz/3-Phase, 415V/50Hz, or single-phase residential voltages. Please specify your local voltage and frequency when sending your inquiry.