Views: 0 Author: Site Editor Publish Time: 2024-12-07 Origin: Site
—— Introduction to Sliding Fan and Evaporative Cooling Pad System
Temperature, humidity, and ventilation management are the three key factors directly affecting the profitability of broiler production. During hot summer months, inadequate temperature control leads to reduced feed intake, increased respiratory diseases, and significant declines in growth efficiency and survival rates. Therefore, selecting an efficient and reliable ventilation and cooling system is crucial for ensuring healthy broiler development, improving slaughter quality, and reducing farming risks.
Nantong Yueneng has customized a longitudinal ventilation and cooling system combining exhaust fans with evaporative cooling pads for Lihua Company's broiler chicken housing. This solution is currently one of the most economical and effective mature technologies in China's livestock farm ventilation and cooling sector. The installation method involves mounting sliding exhaust fans on one end wall of the greenhouse, while evaporative cooling pad walls are installed on the opposite end wall and side walls. When the fans operate, negative pressure is created inside the barn, drawing in outside hot air through the evaporative cooling pads. As the hot air passes through the pads, heat is absorbed by water evaporation, cooling the air before it enters the interior. This process establishes a stable, well-regulated environment with optimal temperature, humidity, and airflow within the barn.
The system provides rapid and highly effective cooling: under sealed conditions in broiler chicken houses, when outdoor summer temperatures exceed 35°C, incoming air can be cooled by 5°C to 15°C, maintaining indoor temperatures below 30°C—fully meeting the comfortable environmental requirements necessary for healthy broiler growth.
Cooling Principle: External hot air passes through the honeycomb-shaped evaporative cooling pad, where water evaporates and absorbs heat, thereby lowering the air temperature before it enters the greenhouse.
Circulation Principle: Exhaust fans remove stale, hot air from one end of the greenhouse, maintaining a negative pressure circulation that continuously pushes purified cool air from the evaporative cooling pad to all areas within the greenhouse.
Air Purification: During system operation, fresh air is continuously introduced while harmful gases (such as ammonia and carbon dioxide) are efficiently expelled, ensuring optimal indoor air quality.
 |  |  |
 |  |  |
The Yueneng Push-pull exhaust fan mainly consists of components such as fan blades, motor, outer frame, protective mesh, support bracket, and louvers. It is widely used for ventilation, cooling, and air exchange in farms, greenhouses, factories, and similar facilities.
The fan extracts air outward, reducing the indoor air pressure and making the air thinner, thereby creating a negative pressure zone. Outdoor air is then drawn into the room due to the pressure difference. In livestock farming greenhouses, the fan is installed on the gable wall opposite the evaporative cooling pad wall. By maintaining continuous negative pressure circulation, it enables full-scale air circulation throughout the greenhouse, effectively removing heat and odors simultaneously.
1. Corrosion-resistant design: The outer frame is made of thick hot-dip galvanized steel sheet with a 275g/m² zinc coating, while the fan blades are crafted from six-piece stainless steel formed by single-step stamping, making them highly resistant to the corrosive environment of high ammonia and humidity in livestock farms, ensuring long service life.
2. Automatic louvre mechanism: Equipped with a push-pull opening and closing system made of industrial-grade nylon injection molding, the louvers automatically close when the unit stops running, effectively preventing rain, dust, wind, and foreign objects from entering, while eliminating interference from rain, snow, or reverse airflow.
3. High-quality motor and transmission: The fan motor features an IP55 protection rating and F-class insulation; the belt is imported Japanese Samsung brand, offering extended service life.
4. High-standard dynamic balancing: The fan impeller undergoes dynamic balancing testing, ensuring smooth operation with no vibration, delivering high airflow and low noise, enabling stable, continuous 24-hour high-load operation.
5. High-volume, efficient exhaust: The 1.1kW model delivers an airflow capacity of up to 44,500 m³/h, enabling extremely fast air exchange and excellent temperature regulation within animal housing facilities.
6. Extremely low energy consumption: When used in conjunction with evaporative cooling pads, it consumes 85%–90% less electricity than traditional air conditioning systems, truly achieving low-carbon and environmentally friendly operation.
In the enclosed environment of broiler chicken farms, Yueneng's Push-pull exhaust fans quickly expel damp and stuffy air from the barn, continuously maintaining a dry, fresh, and cool atmosphere—providing strong support for high-quality growth of broiler chickens.
 |  |  |
The Nantong Yueneng evaporative cooling pad wall is another key component of this cooling and ventilation system, working in conjunction with the sliding fan to play a crucial role in cooling greenhouse structures during summer.
In simple terms, the cooling principle of an evaporative cooling pad wall relies on the natural heat absorption through water evaporation. When exhaust fans create negative pressure inside the greenhouse, unsaturated warm air from outside is drawn through the moist honeycomb-shaped evaporative cooling pads. As water evaporates from the pads into the airflow, it absorbs a significant amount of heat, thereby substantially lowering the air temperature before the cooled and humidified air is circulated back into the greenhouse, achieving both cooling and humidification effects.
1. High-quality evaporative cooling pad paper: Yueneng evaporative cooling pad paper is made from premium pulp, featuring a dense structure and excellent permeability for high evaporation efficiency. Custom sizes are available to meet the specific requirements of each chicken house in Li Hua Farming Community.
2. Aluminum alloy frame: The evaporative cooling pad wall is encased in an aluminum alloy outer frame, ensuring greater structural strength and extended service life.
3. Significant cooling effect: During hot seasons when outdoor temperatures exceed 35°C, air passing through the evaporative cooling pad wall can be cooled by 5°C to 15°C (with slight variations depending on external humidity), providing broiler chickens with a cool and comfortable growing environment.
Product quantity configuration reference: Taking a standard broiler house (12 meters wide × 80 meters long) as an example, install one exhaust fan per 150 square meters, totaling seven fans. Each fan should be paired with six square meters of evaporative cooling pad wall, meaning approximately 42 square meters of evaporative cooling pads installed on the end walls opposite the fans and the two side walls. Maintain a safety distance of 2.5 to 3 meters between the evaporative cooling pads and the broilers to prevent direct cold airflow from causing stress to the birds.
Nantong Yueneng, as a domestic manufacturer in the field of ventilation and cooling for livestock breeding, is very honored to provide fans and evaporative cooling pads for cooling equipment to Li Hua Company's breeding area. We will ensure the long-term, efficient and stable operation of the ventilation and cooling systems in each breeding greenhouse of Li Hua Company with high-quality products, professional construction and considerate after-sales service.
Choose Nantong Yueneng, and ensure that every chicken in your flock can grow and reach marketable weight in the most comfortable environment. We firmly believe that with Nantong Yueneng's integrated ventilation and cooling system solution, the broilers in each breeding area of Liuhua Company will not only be free from worries about summer heat, but will also achieve a qualitative leap in production efficiency. We look forward to our products helping Liuhua Company continuously enhance its breeding economic and social benefits.
