Gas Turbine Evaporative Cooling System

Evaporative Cooling

Pneumafil provides a rigid evaporative media which offers low pressure drop and algae resistance, as well as distribution pads and drift eliminators.

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Lowering the inlet temperature with evaporative cooling can increase system heat rate, while only causing a relatively small increase in inlet pressure drop. Proper monitoring of wet and dry bulb temperatures will allow most operators to recognize changes in cooler system performance. However, best operation and reliability can also be achieved with periodic inspections by using high-quality evaporative cooling components.

Cooler Media - Pneumafil's evaporative cooling medium is rigid, self supporting, resin impregnated cellulose (glass fiber is also available), chemically treated to resist degradation and to yield efficient wetting and high evaporation rates. The unique cross fluted design encourages water to stay at the front of the media pack, where dirt and minerals are most likely to collect. This also helps reduce water carry-over.

Distribution Pads – Distribution pads are used in conjunction with cooler media for lateral distribution of the water to the cooling media below. There, pads are 2” or 3” thick and are protected with a special edge treatment for long term performance and wear. Distribution pads are normally constructed with the same material as the cooler medium.

Drift Eliminator – The drift eliminator is made of an array of S-shaped passages. When air passes through the medium, water droplets impinge on the outside of each turn where they agglomerate and drain out the front face. These droplets are large enough that they do not re-entrain in the air stream.

Downloadable Documents

Evaporative Cooler Media

Distribution Pads

Drift Eliminators

Our free Evaporative Cooling Preventative Maintenance Checklist for gas turbine users contains information and tips regarding On-Off cycling of pads, controlling scale and dirt, cleaning the sump and distribution system, minimizing nutrient contamination, and much more.