What Are Air Shower Specifications?
Air shower specifications refer to the key dimensions, airflow performance, filtration efficiency, and operational parameters of an air shower system. Understanding these specifications is essential when selecting equipment for cleanrooms in industries such as semiconductors, pharmaceuticals, food processing, medical devices, electronics, and precision manufacturing.
Proper air shower specifications help reduce contamination risks by removing dust and particles from personnel before they enter controlled environments. Selecting the correct configuration can improve cleanroom efficiency, reduce maintenance costs, and support compliance with cleanliness standards.
Standard Air Shower Specifications
The following table shows typical air shower specifications commonly used in industrial cleanroom applications.
| Item | Standard Specification |
|---|---|
| Air Velocity | 20–25 m/s |
| HEPA Filter Efficiency | 99.99% @ 0.3μm |
| Pre-Filter Efficiency | G4 |
| Power Supply | 220V / 380V |
| Nozzle Quantity | 12–24 pcs |
| Blowing Time | 0–99 seconds adjustable |
| Noise Level | ≤65 dB |
| Cleanliness Level | ISO 5–ISO 8 |
| Door Interlock | Electronic Interlocking |
| Material Options | Powder-Coated Steel / SUS304 Stainless Steel |
These air shower specifications may vary depending on project requirements and cleanroom classifications.
Standard Air Shower Dimensions
One of the most frequently requested air shower specifications is overall size.
Single-Person Air Shower
| Parameter | Dimension |
|---|---|
| External Size | W1390*D1000*H20 70 |
| Internal Size | W790*D920*H1900 |
Double-Person Air Shower
| Parameter | Dimension |
|---|---|
| External Size | W1390*D2000*H2070 |
| Internal Size | W790*D1920*H1900 |
Multi-Person Air Shower
For facilities with high personnel traffic, larger air shower specifications can be designed to accommodate three or more users simultaneously.
Cargo Air Shower
Cargo air shower specifications are usually customized according to pallet size, trolley dimensions, or production logistics requirements.
Key Technical Parameters of Air Shower Specifications
Air Velocity
Air velocity is one of the most important air shower specifications. The recommended blowing speed is typically between 20 and 25 meters per second.
High-speed airflow effectively removes dust particles from clothing surfaces before personnel enter the cleanroom.
Filtration System
Modern air shower specifications generally include a two-stage filtration system:
- Pre-filter for larger particles
- HEPA filter for fine particles
The HEPA filter typically achieves 99.99% efficiency at 0.3 microns, ensuring clean airflow throughout the chamber.
Nozzle Configuration
Nozzle quantity and arrangement directly affect cleaning performance.
Most standard air shower specifications include:
- 12 nozzles for single-person units
- 18–24 nozzles for larger systems
Adjustable stainless steel nozzles provide full-body airflow coverage.
Control System
Advanced air shower specifications often include:
- Infrared sensors
- Touch-screen controllers
- Automatic door interlock
- Adjustable blowing time
- Voice prompts
- Emergency stop function
These features improve operational safety and user convenience.
How to Choose the Right Air Shower Specifications
Selecting appropriate air shower specifications depends on several factors.
1. Cleanroom Classification
Higher cleanliness environments usually require stricter air shower specifications and more efficient filtration systems.
2. Personnel Flow
Facilities with large numbers of employees may require double-person or multi-person air showers to improve efficiency.
3. Available Installation Space
Air shower dimensions should fit existing facility layouts while maintaining smooth personnel movement.
4. Industry Requirements
Different industries may require different materials.
- Semiconductor industry: anti-static design
- Pharmaceutical industry: SUS304 stainless steel
- Food processing industry: corrosion-resistant construction
5. Future Expansion
Customizable air shower specifications allow future upgrades without major facility modifications.
Custom Air Shower Specifications
Many cleanroom projects require non-standard air shower specifications.
Common customization options include:
- Extended chamber length
- Unequal double doors
- Sliding doors
- Automatic doors
- Card access systems
- Explosion-proof components
- Stainless steel construction
- Special voltage requirements
Manufacturers such as Baihong Purification provide customized solutions according to project-specific cleanroom requirements.
Conclusion
Understanding air shower specifications is essential for maintaining cleanroom performance and contamination control. Important factors include dimensions, air velocity, filtration efficiency, nozzle configuration, and control systems.
Whether selecting a standard personnel air shower or a customized cargo air shower, choosing appropriate air shower specifications can improve operational efficiency and support long-term cleanroom reliability.
FAQ
What is the standard size of an air shower?
Most single-person air showers are approximately W1390*D1000*H20 70 mm, although custom sizes are available.
What air velocity should an air shower have?
Typical air shower specifications require airflow velocity between 20 and 25 m/s for effective particle removal.
What HEPA filter efficiency is commonly used?
Most air showers use HEPA filters with 99.99% efficiency at 0.3 microns.
Can air shower specifications be customized?
Yes. Dimensions, materials, door types, and control systems can all be customized according to project requirements.
How long should the air shower cycle last?
Most systems operate between 10 and 30 seconds, while controllers often allow adjustment up to 99 seconds.
