Helical gearboxes H3 flender konfigurator H3-CH-23-A

Flender/Flender Gear Units/Helical gearboxes H3

d. If this is done in refrigerated room, the produce may be stored for short time in the same room after the precooling operation (. In continuous ow shower system, the produce is transported on conveyor much in the same way as in the immersion system. The time that the produce spends in thehydrocooler can be adjusted by changing the conveyor speed. If the produce is in bins orpallets, the containers may also be partly submerged as they travel along the conveyor. Water is sprayed on the produce from overhead. The water must be sanitized, especially if it is reused. It should be taken from clean source, either well or domestic supply ( and should be disinfected by addingchlorine to the extent that the free chlorine level is 1 to 1 ppm (. The water shouldbe drained out of the hydrocooler at least daily and the system sanitized. Extremely dirtyproducts should be washed before hydrocooling to decrease the amount of dirt that entersthe system. Screens and lters serve to remove debris and dirt from the water before it is recycled. Water used for hydrocooling is generally kept between 0 and 0.5 using mechan- ical refrigeration (. Produce that is sensitive to chilling injury may be cooled in waterat 0C as long as the cooling time is limited (. Hydrocoolers require large refrigeration potential in very short time. Ice is therefore often used to assist the mechanical refrigera- Cooling and Storage 5 tion system ( and is usually added to water tank to cool the water or is used in an ice-accumulator refrigeration system. Financial costs for energy can be reduced by build-ing the ice supply during off-peak hours and using the ice for cooling when the energycosts are high. The necessary refrigeration for system can be decreased by insulatingthe hydrocooler. Up to half the refrigeration potential in some hydrocoolers can be lost as result of insufcient insulation (. Hydrocooling is suitable for bulk and packaged produce. It is commonly used for melons,