How to reasonably plan the number and location of fans ...

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Sep. 23, 2024

How to reasonably plan the number and location of fans ...

-02-06

How to reasonably plan the number and location of fans installed in dairy farms

Heat stress occurs when cows generate and absorb more heat than they can easily get rid of by respiration, sweating and air blowing by them (wind or fans).Heat stress situations cannot be avoided, but their impact can be minimized.In addition to adding more water to the cow, adjusting the daily diet to maintain feed intake, and providing shade, it is especially important to actively cool the cow.When the environment exceeds 26&#;, it is recommended to use a smart sprinkler to spray cows with water and a fan to cool them. It also increases the flow of air, ensuring that air can flow freely through all corners of the cowshed.

1.Make sure you choose the right fan

It is self-evident that creating an ideal living environment for cows is important to the pasture, so all kinds of brand fans come on stage, each show a unique character.The fan supports natural ventilation, and the fresh air from the fan reduces the cows' perception of temperature and prevents them from suffering from heat stress, A minimum air speed of 2 meters per second is essential to achieve this effect, and EC fans are widely used,They can provide directed air flow at fairly high speeds and are therefore often placed behind feeding pens or above corrals to induce cows to feed or lie down, both of which are important for ideal milk production.

The use of fans can ensure a stable climate in the house throughout the year, prevent disease, reduce veterinary costs and increase milk production, thus bringing a good impact on the operation.Circulation fans for cows are suitable for use in large areas,high supply projection distance and air liquidity are important. In addition, the location of the fan in the dairy farm is also very important to avoid the production of wet spots.Dairy farms should pay attention to the following factors when choosing the type of fan: Durability and reliability of the fan; Suitable for intensive use; High projection range (long range projection, minimum speed 4.7 m/s); Resistance to extreme conditions; Adjustable fan ensures constant air flow at very low temperature.

2. Where is the best place to install the fan in the pasture?

Provide fresh air to each cow bed, which is where the cow spends the most time. Maintain at least 1.5 m free space on the intake side of the fan for optimal efficiency.
The installation is carried out using the existing row frame or the row frame specially installed for Terrui fans.
A fan is installed between the two compartments, covering an area sufficient to provide cooling to both compartments simultaneously.
The fans are extended to each other.
The suction side of the fan should be selected in an area that does not require ventilation.

Do not install the fan in a position where cows can reach it. For fans, the minimum installation height required is 2-2.5 meters from the ground to the bottom of the fan.
Do not hang the fan over the trough. Practice has found that this will dry out the food, but also lead to cows only eat concentrated feed, causing rumen acidification. Another disadvantage is that cows prefer to lie in manure bars in cool air currents, which increases the risk of udder infection.
For efficient use of the fan, make sure that there are as few obstacles to air flow as possible. Pay attention to unobtrusive obstacles, such as feeding robots.

Goto Windmax Power to know more.

3. How many fans does your ranch need to achieve the desired results?

Although much depends on the application of the fan, general assumptions can be made about the use of the fan in pasture. The ideal number of fans depends in part on how the installation is set up. The factors affecting the number of fans are as follows:
Wind speed and volume: When air is circulating, it is important to achieve and maintain a specific wind speed. When wind speeds exceed 2 meters per second, cows experience a cooling effect. An added advantage is that gadflies are also reduced when wind speeds exceed 2 meters; When wind speeds exceed 2.5 meters per second, other types of flies also stay away.

Scope of influence and efficiency: regardless of other factors and purely based on the fan itself, Terui fan adopts EC permanent magnet synchronous motor, which has higher wind speed and more energy saving than the general asynchronous motor fan. By installing another fan 6 meters away, the moving air is again drawn in and blown to another potential fan. This can not only improve the influence range of the fan, but also improve the efficiency of the fan.

4. Application Case of Terrui Fan

For further cooling on the basis of natural ventilation. Customers can control the switch of each fan through the mobile APP of Terrui Internet of Things software, so as to achieve real-time temperature control of the barn, and check the running state of the fan and fault warning in the background!

"The diameter of each Terui fan is 1 meter, 1.2 meters, 72 inches of positive and negative pressure, and each fan can accurately control the air flow rate above the cow's back without obvious air flu, which will not cause stress to the cow."
The customer believes that the fan investment can be recovered within two years. "The result is fewer flies, drier cattle sheds and, most importantly, better animal health. The use of this fan reduces veterinary bills for customers and increases cow fertility and milk production. Also, even old cows produce the same amount of milk all year round!"

What is the best place to mount a circulation fan in a dairy ...

To determine the best place for your fans in a dairy barn you have to consider several aspects. As every barn is built differently, customization is the key to reach an optimal result. We have included a few guidelines for you below:

Do&#;s

Provide a refreshing airflow over the cubicles. This is where the cows spent the largest amount of time. Save at least 1.5 meters of free space on the suction side of the fan for optimal efficiency.
Make use of existing trusses to mount 130-centimeter basket fans with a chain or to install smaller basket fans directly.
Mount a 130 cm basket fan between double cubicles. The reach of the fan is wide enough to provide both cubicles with a cooling effect.
Mount the fans by extension of each other
Use spaces that do not need to be ventilated (Such as the area for calves) for the suction side of the fan.

Dont&#;s

Don&#;t mount fans in places that the cows can reach. For a fan with a coarse-mesh grill, the minimal required height to mount the fan is 2.7 meters measuring from the bottom of the fan to the ground.
Don&#;t hang fans above the feeding racks. In practice, we see that this dries out the food, which can result in cows solely consuming the concentrate feed. This can in turn cause ruminal acidification. An additional disadvantage is that the cows are more likely to lay down on the manure grid in the cool air stream, increasing the risk of udder infections
.
Make sure there are as little obstacles to the air stream as possible for the most effective and efficient use of fans. Take care of subtle obstacles such as feed robots for example.

What fan size do you require?

In order to determine where to place the fans, It is good to know that this differs depending on the size of the fan. Big fans are often more efficient and generally move more air than smaller fans. With one 130cm Basket fan, you can provide a fresh breeze wide enough for a double cubicle. Because the fans come with a coarse-mesh grill, keeping the air resistance to a minimum, the minimal required height to mount the fan is 2.7 meters measuring from the bottom of the fan to the ground. In case the barn is lower than the previously mentioned height, we of course recommend using a smaller basket fan. These fans come with a fine-mesh grill that ensure they can be safely mounted in places under 2.7m. Do pay attention that you mount the fans outside of the reach of the cattle and that you will require a larger number of fans to create the desired effect.

What is the ideal tilt angle?

The tilt angle depends on the type and the diameter of the fan. For our most commonly sold 130cm basket fan, we recommend a tilt angle of around 20 degrees. This angle ensures an optimal spread of the airstream across the reach of around 15 meters long and 7 meters wide.

Other locations in the barn

After seeing positive results near the cubicles, dairy farmers often decide to employ fans in the waiting or milking areas of the barn as well. In these areas, there is often less space for a large fan. We recommend using a smaller basket fan or a horizontal circulation fan with a casing here. The advantage of a fan with a casing is the more directional air stream with which the air speed remains high over a longer distance. This can be favorable when deciding on the ideal place of installation.

Looking for more information? Read the full article in our white paper

Are you looking for more information on this topic? You can find more information in our white paper covering topics such as how many fans you need in your dairy barn, what the ideal tilt angle is and which size will work best for your building. For more information, please visit our topic page on heat stress in dairy cows here..

For more information, please visit Dairy farms Industrial Ceiling Fan Supplier.

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