Product Name	Large Tunnel Air Inlet System
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Product Overview	The Large Tunnel Air Inlet System is designed to provide a high-volume fresh air intake for commercial poultry houses, pig barns, and other livestock buildings using tunnel or Combi-Tunnel ventilation. Large inlet openings are normally positioned at or near the gable end of the building, opposite the main exhaust fans, allowing outside air to travel through the house in a controlled direction. The system is particularly suitable for warm-weather ventilation, where a large intake area is required to support high air exchange rates and effective heat and moisture removal. Depending on the building design, the inlet can be configured as a large flap, shutter, panel, or tunnel door system.
Key Features	Large effective air intake area for high-capacity tunnel ventilation. Designed for installation at or near the gable end of livestock buildings. Supports a direct, longitudinal airflow path toward exhaust fans. Adjustable opening area for controlled ventilation according to climate demand. Insulated inlet components can help reduce unwanted heat loss when closed. Suitable for integration with motorized actuators and farm climate control systems. Durable construction designed for demanding commercial livestock environments. Customizable dimensions and configurations according to project requirements.
Structural Components	Depending on the selected configuration, a large tunnel air inlet system may include: Heavy-duty inlet frame or supporting structure. Large movable inlet flap, shutter, panel, or tunnel door. Insulation layer or insulated flap construction for improved sealing. Hinges, linkage arms, cables, or mechanical operating components. Motorized actuator or central control mechanism. Optional light-control or light-trap components for poultry houses requiring dark-out conditions. Sealing components to reduce uncontrolled air leakage when closed.
Working Principle / Structural Principle	During tunnel ventilation, exhaust fans installed at the opposite end of the livestock house create negative pressure and draw outside air through the large inlet opening. The incoming air travels through the building toward the exhaust fans, creating a longitudinal airflow pattern. The inlet opening can be adjusted to match the required ventilation capacity. Proper inlet area, location, and airflow direction are important for maintaining the designed static pressure and achieving uniform air movement through the animal zone. During periods when tunnel ventilation is not required, the inlet can be closed to limit uncontrolled air exchange and, where insulated components are used, reduce heat transfer through the opening.
Technical Specifications	Application type: Tunnel and Combi-Tunnel ventilation. Installation location: Gable wall, end wall, or near the end of the livestock building. Opening size: Customizable according to building dimensions and required ventilation capacity. Airflow capacity: Designed according to total fan capacity, inlet area, static pressure, and project requirements. Operating method: Manual, mechanical, or motorized control according to system configuration. Material and insulation: Selected according to environmental conditions and project specifications. Light control: Available upon request for poultry houses requiring light reduction. Detailed dimensions and performance data: Available upon request.
Applications	The Large Tunnel Air Inlet System is suitable for: Commercial broiler houses and poultry production buildings. Breeder and other large-scale poultry facilities. Commercial pig houses designed for tunnel ventilation. Large livestock buildings requiring high-capacity summer ventilation. Steel structure livestock buildings and insulated sandwich-panel farm buildings. New farm construction, barn expansion, and ventilation system upgrading projects.
Customization Options	SHEWUYOU can develop tunnel air inlet configurations according to the specific requirements of international livestock projects: Customized inlet dimensions and opening area. Adaptation to concrete, masonry, steel structure, and sandwich-panel buildings. Insulated or non-insulated inlet configurations according to local climate. Manual, winch-operated, linkage-controlled, or motorized opening systems. Optional light-control solutions for poultry houses. Integration with ventilation controllers, actuators, temperature sensors, and climate management systems. System configuration designed according to local climate, farm layout, animal capacity, and exhaust fan capacity.
Installation & Maintenance	The inlet should be installed at the designated tunnel air intake end of the building and aligned with the overall ventilation design. The opening area and installation position should be coordinated with the exhaust fan capacity, building cross-section, and required airflow path. For steel structure buildings and sandwich-panel walls, suitable framing and sealing details should be incorporated during construction. Motorized systems should be connected to the farm climate controller according to the selected control configuration. Routine maintenance includes checking inlet panels or flaps, hinges, seals, actuators, linkage components, and mounting points. Dust and manure deposits should be removed regularly to maintain smooth movement and effective sealing.
Project Cases	Large tunnel air inlet systems are commonly incorporated into high-capacity livestock ventilation projects where large quantities of fresh air must enter the building through a controlled intake area. Typical projects include commercial poultry houses, pig production buildings, steel structure farm complexes, and ventilation upgrades in hot-climate regions. The final inlet configuration should be engineered according to the farm building layout, local weather conditions, animal capacity, cooling strategy, and exhaust fan system.
Product FAQ	Q: Where should a tunnel air inlet be installed? A: It is normally installed on the end wall or near the gable end of the livestock building, opposite the main exhaust fans, so incoming air can travel through the house in the intended direction. Q: What is the main purpose of a large tunnel air inlet? A: It provides a large controlled air intake area for high-capacity tunnel ventilation, helping move heat, moisture, and stale air toward the exhaust end of the building. Q: Can the inlet size be customized? A: Yes. Opening dimensions and system configuration can be designed according to building dimensions, ventilation capacity, climate conditions, and project requirements. Q: Can the inlet be connected to an automatic ventilation system? A: Yes. Motorized actuators and control mechanisms can be configured for integration with livestock climate control systems. Q: Can light control be added for poultry houses? A: Light-control or light-trap solutions can be incorporated when required by the poultry production system.
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