Active cold stores are refrigerated warehouses required for dynamic storage applications. These warehouses have frequent movements of products on daily basis. Also various temperature zones are created within the same warehouse for storing different products requiring different temperatures. The application area is: ice cream, frozen foods and cold storage of fresh fruits and vegetables.
Cold stores are important elements of cold chains. The cold chain mechanism could not only involve storing perishable food items for long periods of time but could also involve long distance transport. In order to prevent deterioration, fruits, flowers, vegetables, milk and processed food are first pre -cooled and thereafter stored in a cold store under conditions of low humidity. Cold stores are utilised even during the transit of the perishables from one place to another under conditions of low humidity. In the entire cycle of the cold chain, cold store serves as a vital link in preventing deterioration of perishables.
The mechanism of cold chain is simple. It involves maintaining food articles under conditions of low temperature for better shelf life and for little or no deterioration of perishables.
The load is highest at the dock. 90% of total load comes from two sources:
Moisture load through ingress of fresh air can be minimized by inducting sufficient fresh air duly dehumidified in the loading docking area to keep dry air moving out of the building even when trucks are docked at all the doors.