Preliminary Design Flash Freezing of Chicken Leonardo Cornejo 00205931 Francisco Beltrán 00201467 Mateo Hachig 00140824 Alex Ocampo 00135145 Simulation Refrigeration Cycle Objectives Conclusion • Design the layout of the system and choose the required materials to meet the requirements. • Simulate the system using Inventor Nastran and Fusion 360 to analyze the heat transfer process of the chicken and the walls. • Specify how much cooling the system will supply Heat Transfer - Composite structure of the wall is Polyurethane foam with a thickness of 102 mm and stainless steel 0.6 mm. - Inner dimensions 3.74 m x4.40 m x2 m. - Capacity 256 boxes distributed in 16 towers of 16 boxes, the distance between each tower is 50 cm and 40 cm. Refrigeration system components: • Compressor model CT2 • Condenser model CxM Series 50kW/m^2 • Expansion valve model XT 640 • Evaporator model Optyma DACC RX H0920 28.06 KW • 99 % of the heat losses calculated are related to the freezing process while only 1 % is caused by the walls. • The refrigeration system designed with a CxM Se ries 50kW condenser and a Optyma DACC 28.06 kW exceeds the requirements of freezing 256 boxes of 40 pounds of poultry in 16 hours. • Using Ammonia and food grade materials is important to avoid contamination from the system to the processed food. -28°C Results Design a refrigeration system to freeze 256 poultry boxes within 16 hours. Power to freeze a poultry box: 106.2 W Power to freeze 256 boxes: 26.16 kW Heat rate through the walls: 0.31 kW Mass flow rate of ammonia: 23.23 g/s Total power required (compressor): 3.64 kW