Adiabatic Cooling Adiabatic air cooling additive systems 1

Typical areas we serve: • • • Air cooled chillers Refrigeration Dry Coolers Air intake Unitary 2

Typical problems we solve: • Increase in the electricity bill • Partition close to the equipment or installation of new equipment around the existing units leading to air recirculation and poor unit operation • Units located in places with higher air temperatures • Equipment fitted with high pressure refrigerant suffering ambient air limitations • Reduction of the available power supply • Additional cooling capacity required 3

How is solved: Reduces condensing air temperature inlet due to: • Air recirculation • Summer peak temperatures • Avoids high pressure cutouts The compressors operates in better conditions and its life cycle is increased: • Lower discharge temperature • Lower oil temperature • Lower winding temperature 4

Efficiency: • Reduction in the unit’s • • power consumption Maintain equipment at full+ load during peak season Improved cooling capacity Benefits: • Shading effect • The mesh placed in front of the coils shades and overcomes the solar radiation effect on coils, resulting in an additional 2°C to 3°C temperature drop. Self-cleaning filter The mesh also acts as a self -cleaning filter keeping the coils clean longer and protecting them against dust and etc. 5

How it works: Adiabatic cooling uses thermo dynamic properties of water and its evaporative cooling effect. Concept is based on intermittently and efficiently evaporating water on a large mesh on the way of air stream. The evaporating water makes the air temperature drop before it reaches the condenser. The water spraying towards the mesh, evaporates on 6

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Diagrams for typical office buildings: Graphical view of power input depending on Outdoor air temperature. Points n` are shifted by adiabatic cooling and show power input reduction of adiabatic additive system. 10

Standard maintenance schedule: 3 M • Check for any scale or dirt / debris build up on mesh. Remove in accordance with manufacturers recommendations. • Check for any leak in pipe work or nozzle heads. • Check spurge system for correct operation in particular the solenoid valve operation. If faulty replace the solenoid valve. • Check spurge controller for correct settings. Adjust if 6 M (Winter isolation if applicable) necessary. • Drain the pipe work and isolate both the water circuit and the controller. • Check the mesh tensions and leave them in-situ. • Clean meshes if there is any debris / dirt. 6 M (Summer activation if applicable) • • • Open main water valve and activate the controller. Test the spray operation and mesh wetting patterns. If any of the nozzles blocked clean them. Clean meshes. 11

ANNUAL • • Check for any scale or dirt / debris build up on mesh. Remove in accordance with manufacturers recommendations. Check for any leak in pipe work or nozzle heads. Check spurge system for correct operation in particular the solenoid valve operation. If faulty replace the solenoid valve. Check spurge controller for correct settings. Adjust if necessary. SITE REQUIREMENTS • • Power supply 220 V. Clean water supply with available flow and pressure min. 2 bar. 12