1.the introduction of fresh air system

The purpose of the positive pressure ventilation of the flexible fabric cloth duct is to exchange the clean air of the wilderness into the calf house through a special ventilation system to dilute and discharge the dirty air in the calf house. The positive pressure ventilation system is mainly composed of an intake fan and a long ventilation duct that is full of many vent holes. The intake fan is placed at the end of the calf house, and the function is to exchange the clean air outside the house; the long ventilation duct is hung on the top of the calf house, and its length is almost equal to the vertical axis of the calf house. A plurality of venting holes are arranged to allow the cleaned outside air to escape evenly.

2.Cattle house new wind flexible fabric cloth duct system design

1)    Engineering requirements

The cows house have a span of more than 26m. In the winter, positive pressure should be used to transport fresh air to avoid the lack of oxygen to affect the growth of the cattle, and to ensure uniform air supply in the active area of the cattle.

2)    Winter fresh air volume calculation table:

Q (ventilation amount) = length of barn * width of barn * height of barn * number of air changes;

According to the span, height, installation and other issues of the barn, it is necessary to consider the flexible air duct layout and the number of fans;

3. Design of flexible fabric cloth duct system of cow house

1) Layout design of flexible fabric cloth duct system

The axial flow fan is installed outside the barn. The Liangmo fabric duct system is according to the barn span and the position of the cow bed,wind duct located at the mountable height position of the cow bed . The height can be adjusted according to the site conditions.

2.)Shape design of flexible fabric cloth duct system

According to the characteristics of the site, the space is abundant, the installation is simple, the economy and other factors are all adopted the circular flexible air duct. Circular pipes are mainly used in open spaces and in high-altitude buildings.

Flexible fabric duct system model diagram

3.) Dimensional design of flexible fabric cloth duct system

The size is determined based on air volume and system inlet wind speed and space constraints.

4.）Design of air outlet mode of flexible fabric cloth duct system

The air outlet mode is designed to have a small hole air outlet mode, and the system small hole air flow organization form is based on the air flow convection principle, and the small hole air outlet is sent to the target area at a certain wind speed for heat exchange to achieve heating requirements. Suitable for heating, fresh air and cooling. The arrangement of the venting holes should be evenly divided into two rows at the lower end of the venting duct, just like the 5 and 7 o'clock of the clock.

Airflow organization distribution curve

5.) Advantages of flexible fabric cloth duct system:

Economic

Low total investment: no insulation, no diffuser, no muffler, integrated multiple units, low installation cost, saving 9.8% investmentLow operating costs: energy-saving operation, energy consumption is 74% of traditional ductsLow cleaning costs: 2% of traditional ducts

Comfort

Air supply effect: the air supply effect is formed by the gap of the fabric and the air supply of the opening, and the air volume is large and the wind is not felt.

Aesthetics: You can order a variety of colors, no longer a single color. You can also customize the patterns and slogans that you like.

Cleanliness: The duct can be easily disassembled and installed, which is very convenient to clean and improve the cleanliness level in the system.

Feature

Environmental protection: The materials are environmentally friendly and recyclable materials. They are manufactured and installed in accordance with environmental protection requirements. The entire system is very energy efficient.

Anti-condensation: through the integral duct fiber gap filter the cold air, forming a cold gas layer outside the duct wall, no temperature difference inside and outside the duct ,completely solve the problem of duct condensation.

Reduce noise: the air duct system is soft in material, low wind speed in running , no noise is generated and transmitted, very quiet.

4. Cow barn fresh air flexible fabric cloth duct system product guarantee

1 Fan equipment guarantee

1) Quality assurance commitments for equipment and construction

The equipment provided by our company is brand new, unused after the date of 2015, using advanced mature technology and high-quality materials. It conforms to ISO9001 quality standard and ISO14001 international environmental protection standard in terms of quality, performance and specifications. They are all packaged according to standard protection measures. Our company promises to organize and standardize the construction, strictly control the construction progress, and the construction period is completed according to the requirements. All construction and construction inspections are carried out in accordance with the current national standards and relevant standards.

2) Service commitment

(1) If the quality of the equipment itself is involved during the warranty period, the seller shall be responsible for repairing or replacing the parts, and the seller shall be responsible for the expenses.

(2) The seller shall perform paid services due to improper management by the buyer and damage caused by human operation during the warranty period.

(3) Exceeding the warranty period, price concessions, and accessories are often maintained at the lowest price.

(4) Our company is responsible for transporting the equipment to the buyer's site and delivering the car.

(5) Our company is responsible for free training to users' using, operation, repair and maintenance personnel. (supply installation, use and maintenance instructions)

3) Commitment of product quality warranty period:

unit warranty period: 24 months after the equipment is shipped (calculated from the date of shipment)

2 flexible fabric cloth duct system guarantee

1) Product use and maintenance precautions

Please read the notes before using this system:

1. The product should be used correctly under the following conditions;

A. ambient temperature: 80C °---  -40C °;

B. Relative humidity of the environment: ≤60%;

C. atmospheric pressure: 100pa-1000pa;

D. can not be exposed to the sun;

E. non-corrosive environment;

2. Do not approach the fire during transportation, installation, and operation of this product;

3. if the product is used for 12 months, if any dirt, it can be cleaned;

4. Please protect the product when installing the air duct, prevent the toughness tool from scratching the product, and bring the gloves to avoid soiling the product;

5. the air duct is correctly installed to prevent the rat and other animals from biting, preventing other tough tools from smashing, avoiding heavy pressure and stretching;

6. the air conditioner is turned on, first open the lowest gear to make the air duct inflated, and then gradually adjust to the maximum gear position, to avoid tear the air duct due to the instantaneous tension;

7. When the air conditioner is not turned on for a long time, the air duct should be removed, dried and stored in a dry environment to avoid mildew caused by environmental humidity (if occoured, the manufacturer is not responsible).

2) The product has a service life of 10 years and a warranty period of 2 years (except that the above products are destroyed under non-human conditions), and the production cycle is 15 working days.