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Facoltā di Scienze Agrarie e Alimentari Universitā degli Studi di Milano
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Design and management of food plants
Code: G600F-
Teacher:  Riccardo Guidetti
Year: 
Term: 
CFU: 
CFU subdivision: Lectures: 4
Practices in classroom: 2
Basic aims:  Provide students with the conceptual tools for analysis, selection and management of production facilities. Learn the operational problems of complex systems. Know the main methods of choosing and analyzing food processing plants.
Acquired skills:  Conceive, plan and manage production systems and processes. Operating efficiency, and functional analysis of alternative technical solutions. Lead industrial production lines optimizing the functionality and performance. Assess efficiency of production and distribution of energy.
Course contents:  Outline of industrial enterprise economy, cost of production, production function, marginal analysis. Material and hygienic design of food plants. Types and efficiency of installations for the production and distribution. Technology of refrigeration machines and cold store. Product handling and transport systems. Process control, sensors and actuators, controllers, logical operation.
Program:  General criteria for technical and economic selection ofindustrial plents: fundamentals of economy of the industrial structure of production costs, the production function and the factors of production, marginal analysis. Risk analysis, reliability and availability, economies of size, reserve units, sizing of accumulators. The materials and the hygienic design of food plants: the main materials used in the food industry (stainless steel, plastics, aluminum, copper) surface finishes. The hygienic design and the safety of industrial plants. Production and distribution of food industry: types, uses, performance. The production facilities and distribution of thermal energy: steam generators, temperature control and pressure distribution (sizing of piping, control valves, the desuperheater, safety valves, steam traps). The production facilities and distribution of electricity: the active power, reactive and apparent power, electric motors (features, shortcuts, speed control, performance), power factor, the electrical installations, the safety of electrical installations. Technologies of the cold cycle refrigerator refrigerants, compressors (reciprocating and centrifugal); systems expansion; capacitors (air, water, cooling towers, evaporative condenser), the evaporators. Systems for space cooling, cold stores. The refrigerated transport, refrigerated facilities for distribution. Handling of products: the study of the lay-out, traffic theory, elements of industrial logistics (handling, storage of materials, freight). Transportation continues: mechanical, pneumatic systems. Discontinuous transport: trucks, trucks. Transport of liquids pump curves, diagrams to handkerchief, calculation of the characteristic of plant, the operating point, flow regulation. The extraction systems: industrial pollutants in the food (types, legislative limits, occupational hazards). Characteristic curves of fans. The fume hoods: criteria for selecting and sizing. Sizing channels. Process control and regulation: the problem of control, control systems in open loop and closed loop; components of the system: sensors, controllers, actuators, and the signal processing: precision, stability and speed. The extent of the main physical process. The control of linear, logical operation: two positions (on 'off), proportional action, integral action, derivative action.
Prerequisites:  First level certificate with an appropriate knowledge main process related to agricultural production
Preparatory instructions:  Applied physic ,Food process technology
Learning materials:  Lecture notes distributed by the Education Secretariat of the department of Agricultural and Environmental Sciences (DiSAA). Recommended reading: F. Turco - General principles for design of industrial plants - Clup, Milan; P. Parolini - Industrial Plant: production and distribution of the heat and fluids - Clup, Milan; O. Pierfederici – Industrial Plants - Pitagora Editrice, Bologna; Monte - Elements of Industrial Plants – Edizioni Libreria Cortina, Turin; Pareschi - Industrial Plants - Edizioni Progetto Leonardo, Bologna.
R.P.Singh, D.R. Heldman - Principi di Tecnologie Alimentari - Casa Editrice Ambrosiana
Other info:  The exam is divided into a written test and an oral exam. The written part aims at verifying the student's knowledge of the practical aspects of using the machines and is made up of a series of numerical exercises that have difficulties and contents similar to those exercised during the exercises moment.
Testing is not permitted during the test.
Students who pass the tests obtained during the course directly access the oral exam.
The oral part consists of discussing the written test and an interview on all the topics discussed during the lessons.
The final vote will be based on the evaluation of both tests.
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Program of Design and management of food plants (pdf version)
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