Experimental evaluation of the optical absorption coefficient of a sandwich panel for insulated vehicles

ATP is an intergovernmental agreement concerning transport of perishable foodstuffs and special equipments to be used for such transport. The purpose of the ATP is to improve the conditions of preservation of the safety and quality of foodstuffs during their carriage, especially regarding quick-frozen and frozen food, in order to keep safe the cold-chain. The aim of this work is to evaluate the absorption coefficient of the sandwich panel that is the basis of the standard insulated vehicle used in refrigerated transport. The evaluation of this coefficient is useful in the complex study of thermal balance of the vehicle.