Air Curtains

MasterFormat Division 23 34 33: Air Curtains - An Overview

Air curtains, categorized under MasterFormat Division 23 34 33, are powerful air flow systems designed to create an invisible barrier between two spaces. They are commonly found above doorways or openings, effectively separating different environments while allowing for easy passage.

What is an Air Curtain?

An air curtain, also known as an air door, is a fan-powered device installed above a doorway or opening. It produces a high-velocity, controlled stream of air that forms an invisible barrier across the opening. This air barrier effectively separates two spaces with different temperatures, humidity levels, or air quality.

How Does an Air Curtain Work?

Air curtains work on a simple principle of creating a powerful air stream. Here’s a breakdown:

1. Air Intake: The air curtain draws in air from the surrounding environment through its intake grille.
2. Fan System: A powerful fan system inside the unit propels the air upwards.
3. Discharge Nozzle: The air is then forced through a narrow discharge nozzle, creating a high-velocity air stream directed downwards.
4. Air Barrier: This downward-flowing air stream creates a powerful "curtain" of air across the entire width of the doorway or opening.

This air curtain acts as a barrier, preventing the exchange of air between the two spaces. It effectively keeps out insects, dust, pollutants, and drafts while maintaining desired temperature and humidity levels.

Where are Air Curtains Commonly Used?

Air curtains are versatile devices used in a wide range of commercial and industrial settings, including:

• Restaurants and Food Service: To keep kitchens separate from dining areas, preventing cooking odors and fumes from spreading while allowing easy access for staff.
• Retail Stores: To maintain comfortable temperatures inside stores and prevent energy loss through open doorways.
• Warehouses and Industrial Facilities: To separate areas with different temperatures, prevent dust and debris from entering, and control airflow in large spaces.
• Hospitals and Healthcare Facilities: To maintain sterile environments, prevent the spread of airborne contaminants, and ensure comfortable temperatures in patient rooms and operating rooms.
• Cold Storage Facilities: To minimize temperature fluctuations and prevent ice buildup when doors are opened.

What are Installation Best Practices for Air Curtains?

Proper installation is crucial for optimal air curtain performance. Here are some key installation best practices:

• Choose the Right Size: The air curtain should be wide enough to cover the entire width of the opening.
• Mounting Height: Install the unit as close to the top of the doorway as possible for maximum effectiveness.
• Level Installation: Ensure the air curtain is perfectly level to create a uniform air stream.
• Air Velocity Adjustment: Adjust the air velocity and direction to optimize performance for the specific application.
• Professional Installation: Consult with a qualified HVAC technician for professional installation and to ensure proper electrical connections and mounting.

What are the Top Manufacturers for Air Curtains?

Several reputable manufacturers specialize in air curtain technology. Some of the leading names in the industry include:

• Berner International
• Mars Air Systems
• Powered Aire
• Trane
• Curtain of Air

Conclusion

Air curtains, as defined in MasterFormat Division 23 34 33, are essential in various settings for temperature control, energy savings, and creating hygienic environments. By creating an invisible barrier of air, they offer a practical solution for separating different spaces while allowing for unobstructed access. Understanding the different types, working principles, and installation best practices of air curtains can help businesses and homeowners make informed decisions, ensuring optimal comfort, energy efficiency, and hygiene.