Room cooling
The use of existing cold storage rooms is one of the most common system. The cold air flow across the packed containers and refrigeration capacity have to be increased in order to guarantee the adequate air circulation with respect the normal flow in a cold storage rooms. In the room precooling the distribution of pallet and container respect to the air flow is determinant. Air should flow in channels created between the rows of pallets. Pallets and container should be aligned in order to avoid obstruction of the air flow between and across the container. Adequate precooling rate are obtained if is possible to maintain on and around the product the cold air speed close to the value of 0.5 m/s and the refrigeration power inside of the cold storage room should be more than 0.28 kW/t considering a product average density of 0.20 t/m3.