Air Filters for Air Conditioning

Product Overview

This Air filter for air conditioning relies on multiple physical processes to separate pollutants in gas-solid two-phase flow. Its performance directly determines the cleanliness level of the controlled environment and is a core component of the purification air conditioning system.

Core Functions

• Ensure Process Stability: Compliant with ISO 14644-1 (Levels 1-9) standards, eliminating contamination and adaptable to high-precision scenarios such as chip manufacturing and aseptic pharmaceutical production.

• Protect Personnel Health: Intercepts bacteria, dust, and other pollutants, reducing the risk of respiratory diseases and ensuring occupational health.

• Protect Air Conditioning Systems: Intercepts large particulate impurities, reducing wear and blockage of unit components, extending service life, and lowering failure rates.

• Optimize System Energy Efficiency: Graded filtration control manages resistance, preventing energy consumption spikes and balancing purification effects with energy-saving benefits.

Product Specifications

The air-conditioning system employs a multi-stage filtration system, balancing purification effectiveness with maintenance costs. The parameters for different filter levels are as follows

Product Characteristics

• Plate Type: Simple structure, low cost, small filter media area, rapid resistance rise, suitable for pre-treatment.

• Bag Type: Mainstream for medium-efficiency filters, adjustable filter area, large dust holding capacity, low resistance, easy to replace, suitable for medium to large air volumes.

• Pleated Type: Folded filter media, large area, small volume, suitable for medium to sub-high efficiency filtration.

• Non-Separator High-Efficiency Filters: Hot melt adhesive separation, small volume, uniform airflow, good sealing, the mainstream choice for cleanroom terminal filters.

• Separator High-Efficiency Filters: Excellent temperature and humidity resistance, suitable for special operating conditions such as high temperature and high humidity.

• Special Functions: Includes customized models with VOCs removal, antibacterial and antiviral functions, suitable for differentiated needs.

Core Performance Parameters

Core parameters determine purification effectiveness and operating costs; selection must match the application scenario:

1. Filtration Efficiency: A core indicator; use the MPPS counting method (ISO 29463) for cleanrooms, matching the target cleanliness level.

2. Rated Air Volume: The air volume handled under design resistance; must match the air conditioning system.

3. Initial Resistance: Affects fan energy consumption; lower initial resistance results in better energy efficiency.

4. Dust Holding Capacity: Determines service life; higher capacity leads to lower maintenance costs.

5. Final Resistance: Replacement threshold (2-3 times initial resistance); timely replacement is necessary.

6.Leakage Rate: A key indicator for high-efficiency/ultra-high-efficiency systems (≤0.01%); requires PAO/DOP leak testing verification.

Application Selection and Maintenance Management

(I) Tiered Configuration Principles

• Fresh Air System: Pre-filter → Medium-efficiency → Sub-high-efficiency → High-efficiency/Ultra-high-efficiency (final stage as needed).

• Circulating Air System: Medium-efficiency → High-efficiency/Ultra-high-efficiency, energy saving and cleanliness control.

• Terminal Purification: Must be equipped with HEPA/ULPA, maintaining the last line of defense for cleanliness.

(II) Replacement Cycle and Precautions

• Pre-filter: 1-3 months, replace when resistance reaches twice the initial resistance.

• Medium-efficiency: 3-6 months, regularly monitor resistance to avoid airflow fluctuations.

• High-efficiency/Ultra-high-efficiency: 1-3 years, can be used after PAO/DOP leak detection is qualified, re-inspection is required after replacement in cleanrooms.

(III) Core Implementation Standards

• Domestic: GB/T 14295-2019, GB/T 13554-2020, GB/T 36370-2018.

• International standards: EN779, EN1822, ISO 29463.