Introduction of Hydrophilic Aluminum Foil

Hydrophilic aluminum foil is a specially treated aluminum foil primarily used in heat exchangers for air conditioning and refrigeration systems. Its key feature is a hydrophilic coating on its surface, which causes water to spread into a thin film rather than forming droplets.

Key Features and Functions

The core purpose of hydrophilic coating is to control condensation. In air conditioning systems, moisture condenses when warm, humid air flows over the cooling fins of the evaporator. On untreated aluminum foil, these water droplets can clog the air channels between the fins, forming "water bridges" that hinder airflow and heat transfer, and may generate noise. The hydrophilic coating makes the surface hydrophilic, allowing condensate to quickly diffuse into a uniform film and be efficiently drained.

This feature offers several key advantages for HVAC systems:

1. Improved heat exchange efficiency: By preventing water droplet formation and blockage, it ensures unobstructed airflow. This can improve heat exchange efficiency by approximately 5%-15%.

2. Reduced noise: Eliminating water droplets minimizes vibration and dripping noise during operation.

3. Corrosion and mold prevention: The coating protects the aluminum substrate from corrosion and helps prevent mold growth, while also preventing aluminum oxide powder from being blown into the room, thus improving indoor air quality.

4. Enhanced durability: The hydrophilic aluminum foil exhibits good formability, resistance to stamping oil, solvent resistance, and heat resistance.

Technical Specifications and Market Overview
Hydrophilic foil is a highly processed product, manufactured by coating ordinary aluminum foil with an anti-corrosion layer and a hydrophilic layer, followed by drying. Commonly used aluminum alloys include 8011, 1100, 1030B, and 3102, with tempers such as O, H22, H24, and H26. The thickness of hydrophilic foil used in HVAC applications is typically 0.08 mm to 0.3 mm, but products with thicknesses ranging from 0.03 mm to 0.8 mm can also be produced. The coating thickness is usually 1-3 micrometers, and the color can be blue, gold, or colorless. HVAC systems are the largest consumer sector, accounting for approximately 42% of global hydrophilic foil demand. This product should comply with the Chinese industry standard YS/T95.2-2001, "Hydrophilic Aluminum Foil for Air Conditioner Heat Exchangers".

Market and Manufacturing Overview
The hydrophilic aluminum foil market is large and growing, primarily driven by strong demand from the air conditioning and automotive industries, particularly the rise of electric vehicles, which require more aluminum foil for battery thermal management. In 2024, the market is estimated to be worth US$1.2 billion.

In short, hydrophilic aluminum foil is a key material in thermal management systems. Its specially designed surface alters the way water interacts with the metal, directly improving the energy efficiency, quiet operation, durability, and hygiene of air conditioning and refrigeration equipment.

Shanghai Mengjiang Aluminum has produced hydrophilic aluminum foil for 17 years, welcome to contact us.