Applications of Nano Coating in Air-Conditioning Technology Basic Principles and Practical Examples LORDAN

Coating Materials via Sol-Gel Process Novel synthesis routes for coating materials Production of particles in Nanometer-scale Specific adjustment of coating properties LORDAN

Organic-Inorganic Hybrid-Polymeres Resistant against: - UV-Light - Temperature (-cycles) - Environmental influences (Hydrolysis, Weathering etc.) LORDAN

Nano coatings on Metals: Abandonment of hexavalent Chromium and other Heavy Metals Thin Coatings Very low Material Consumption Improved Coating Properties LORDAN

Coating Properties: Caoting thickness: Clearcoating: microns Pigmented: microns Adhesion to: Metals (Al, Mg, Stainless Steel...) Glass / Ceramic LORDAN

Single-Component Coatings Thin Coatings for Light Metals and Stainless-Steel Excellent Corrosion Protection and easy-to-clean Properties LORDAN

Advantages of Coatings: Abandonment of hexavalent Chromium and other Heavy Metals Pre- treatment is reduced to Alkaline Cleaning Thin Coatings, low Material Consumption Improved Coating Properties LORDAN

Application Examples: Air-Conditioning Technology LORDAN

Sources of Contamination: Dust (for example from Grinding Machines) Abrasion Fluff Ball (from Textiles, Polymers) Oleiferous Air Acidic Air LORDAN

Satrting point: Cooling unit at grinding machine LORDAN

Cooling unit in elctrical control cabinet at textile industry LORDAN

Today‘s Solutions: Use of Filter Pads Continuous cleaning with compressed-air LORDAN

Customer‘s statements about Maintenance: No more maintenance wanted Maintenance is expensive We have no financial and human resources for maintenance Devices should work for their whole life LORDAN

Why Nano coatings? Advantages: Specific adjustment of coating properties possible Here: Easy-to-clean properties New coating materials are based on high chemical bonding energy Resistant against temperature and environmental influences Chemical basis shows stable soil-resisting properties Non-polar surface properties LORDAN

Why Nano coating? Advantages: - Environment friendly production process: Conventional coating use Chromium, Zirconium or Titanium on Aluminium surfaces - These pretreatments can be avoided - Liquid coating materials LORDAN

Quality testings: - Acidic Humidity: (30 Cycles, 0.2 SO 2 ) ISO Constant Humidity: (1,000 h) DIN Salt-Spray: (> 3,000 h) ESS ISO Boiling test: (2 h dest. Water) - UV-Resistance: QUV 300 h ISO Heat transfer: DIN 3168 Positive test results: - No damaging, blistering or softening of the coating! LORDAN

Salt-Spray-Testing (2000 hours) LORDAN Galvanized end plates and copper tubes are all totally corroded. Fins and fins edge show no sign of corrosion!

Results of practical testings: Used during production of carbon brushes for electric motors 10. Februar September März September 2007 LORDAN

Results of practical testings: Used in casting house and finishing of stainless steel pipes 2. Juni November April September 2007 LORDAN

Present state: - Fleece filter is changed continuously, yearly total cleaning of the unit - Fleece filter are strongly contaminated after 15 days of use - Condenser is already polluted, traces of oil Electrical controle cabinet cooling unit at brake- disc production LORDAN

- Condenser is clean, - Examination with Endoscope and fleece paper show no traces of pollution Electrical controle cabinet cooling unit with Nano coating LORDAN

Energy balance at the use of Nano coatings: -Energy consumption is reduced 30 % in comparison to uncoated parts! -Equivalent CO 2 -output also reduced 30 %! kg 500 kg 1,000 kg 1,500 kg 2,000 kg 2,500 kg 3,000 kg 3,500 kg CleanPollutedDifference Only 3% of greenhouse effect results from freezing agents, but 97% are a result of Energy consumption of the cooling units. LORDAN

Reduced adhesion of dust particles at the fins of the condensors, leading to increased economic life-time and extended service intervalls Successful use in technical units since 2000 Production process is eco-friendly and energy-saving Reduction of power drop of the cooling units in continuous duty, resulting in high energy efficiancy In many industrial applications (dry dust) no use of fleece filters needed Easy-to-clean surface Resume and Future prospects LORDAN