A quality blown film cooler is an important component in achieving the highest possible production rate from an internal bubble cooling (IBC) system. The inlet or supply air from the IBC supply blower passes through the cooling coil and is cooled to the temperature established by the chilled water supply. The chilled water supply comes from the plant chiller or an individual mini-chiller.
By chilling the inlet air temperature going to the IBC and air ring, an increase in production rate of 15-25% can be achieved when compared to using air that is at the ambient plant temperature. This benefit has added importance when the production occurs in climates where the ambient temperature varies a significant amount or where the summertime temperatures are very hot.