Negative pressure fan+water curtain wall+fan multi device combination helps with ventilation and cooling in animal husbandry

In recent years, with China's continuous investment and high attention to the construction of the "vegetable basket" project, animal husbandry, as a cornerstone industry to ensure high-quality protein supply for the people and stabilize livelihood consumption, is rapidly developing towards scale and intensification. In this process, how to create a healthy and comfortable growth environment for various livestock and poultry has become a core issue facing many farm owners. Our company (Ruifeng Environmental Protection Refrigeration) has successfully tailored a combined ventilation and cooling system of "negative pressure fan+water curtain wall+fan" for multiple small and medium-sized livestock farms in China, based on our deep experience in ventilation and cooling. With efficient, economical, and reliable solutions, we aim to improve the quality and efficiency of the breeding industry.

Although these small and medium-sized breeding farms are spread all over the country and their breeding varieties are tailored to local conditions, mainly pigs, as well as cattle, sheep, chickens, ducks, etc., they generally face similar challenges: high breeding density, vigorous animal metabolism, and easy accumulation of large amounts of exhaust gas, moisture, and heat in the farm buildings. Especially in the hot summer, the high temperature and high humidity environment can not only trigger heat stress reactions in livestock and poultry, leading to decreased appetite and slow growth, but in severe cases, it can even threaten their life safety, directly affecting the slaughter rate and breeding efficiency. However, limited by scale and funding, these farm owners are particularly sensitive to the cost of equipment investment when carrying out environmental renovations, and urgently need to find a solution that can significantly improve the environment while also considering long-term operational economy within a limited budget.

In response to this market pain point, the solution design team of Ruifeng Company conducted an in-depth analysis of the complex application scenarios in breeding farms. We have fully considered the variability of the external environment of the breeding farm, the open structural characteristics of the internal space, and the high sensitivity of livestock and poultry to air quality. In the end, we abandoned the limitations of traditional single device cooling and innovatively adopted a multi device combination layout of "permanent magnet negative pressure fan+water curtain wall+industrial fan". The core logic of this design is to leverage the collaborative advantages of various devices and achieve a ventilation and cooling effect of "1+1+1>3":

1. Negative pressure fan: As the "power heart" of the system, it is installed on the wall on one side of the breeding farm. It adopts an efficient permanent magnet motor, which not only saves electricity and energy, but also generates strong exhaust capacity. When working, the fan quickly exhausts the indoor air that is hot, turbid, and filled with harmful substances such as ammonia, creating a negative pressure state in the room instantly.

2. Water curtain wall: As the "cooling core" of the system, it is installed on the wall opposite the negative pressure fan. When negative pressure is formed indoors, fresh outdoor air is forcibly drawn through the wet curtain wall. During the vaporization process, water molecules on the water curtain absorb a large amount of latent heat from the air, causing a sudden drop in the temperature of the air entering the room. At the same time, it completes efficient filtration, continuously delivering cool, humid, and clean fresh air into the breeding farm.

3. Industrial grade large fan: As the "airflow dispatcher" of the system, cleverly arranged in various key positions of the breeding farm. They are responsible for directing the turbid and hot air from the far end towards the exhaust area where the negative pressure fan is located, ensuring that there are no ventilation blind spots in the entire space, and the airflow organization is more scientific and reasonable, accelerating the overall replacement efficiency of indoor air.

The scientificity of this combination scheme is rooted in the classic physical principles of "water evaporation absorbs heat" and "air convection". After the system is started, dynamic negative pressure is established indoors through a negative pressure fan to drive outdoor air through the water curtain wall in a predetermined path. When water flows through specially designed water curtain paper, a thin water film is formed, maximizing the contact area with air, thereby achieving efficient heat exchange and cooling process. No matter the outdoor temperature is above 40 ℃, this system can stably control the indoor temperature within the most suitable growth range for livestock and poultry, which is 26-30 ℃. After the equipment is put into use, the environment of the farm has undergone earth shaking changes: the air has become fresh and cool, the concentration of harmful gases such as ammonia has been significantly reduced, the phenomenon of heat stress has been completely eliminated, the livestock and poultry are energetic, the intake of food has increased, and the incidence rate has significantly decreased. This not only directly guarantees the health of livestock and poultry, but also translates into a tangible increase in slaughter rate and economic benefits of breeding, truly achieving a win-win situation between environmental protection and benefits.

It is worth mentioning that the successful implementation of multiple small and medium-sized breeding farm projects by Ruifeng Company's technical design and construction team has had an impact far beyond the projects themselves. It fully demonstrates the strong adaptability and excellent effect of the combination mode of "negative pressure fan+water curtain wall+fan" in special spaces and industries (such as high humidity, high dust, and corrosive gas environments). This also demonstrates that Ruifeng Company not only has standardized product supply capabilities, but also has strong capabilities in comprehensive equipment selection, customized system design, and refined construction for complex application scenarios. Whether it is a large workshop, warehouse, or any place that requires efficient ventilation and cooling, Ruifeng can provide you with the most professional and reliable solutions.