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Facoltā di Scienze Agrarie e Alimentari Universitā degli Studi di Milano
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Viticultural and Enological Engineering - Teaching Unit 1: Winery Design
Code: G250ZA
Teacher:  Roberto Beghi
CFU subdivision: Lectures: 5
Basic aims:  Unit 1: To know the principal plant' law and standard; to acquire criteria for the dimension of plants and machineries for oenology; to know the main oenological machines; to acquire analysis methodology for complex and simple plants.
Unit 2: The student will be able to get a high level of knowledge about the main notions of agricultural mechanics, with detailed information on the machinery used and the mechanized tasks carried out in vineyards, including several theoretical and practical applications concerning the correct coupling tractor-implement. The safety and the comfort relevant to the use of machinery in vineyards are also suitably emphasized.
Acquired skills:  Unit 1: Acquisition of linguistic and technical terms competences. To design and manage productive system and complex processes for the wineries; to make economical and functional analysis of technical alternative solutions; to run the production in winery to obtain optimum conditions.
Unit 2: A good knowledge of fundamentals of Mathematics and Physics, and a general, but not detailed, knowledge of the machines and implements most commonly used in vineyards tasks.
Course contents:  Design element for a winery: technical and economic analisys and design models. The main oenological machines: functional scheme of the principal oenological machines. The electricity in the winery: the electrical engines. Refrigeration systems: the refrigeration cycle The regolation of the temperature and humidity in the winery: the industrial conditioning The heat production and distribution: the generators, piping elements.
Program:  1. Design elements of a wine cellar: technical elements of choice of economic systems: fixed costs, variable, the record of profitability. The preliminary study of the cellar, identification of objectives, analysis of the process cycle, size of machine performance, structural components of the cellar, a study of lay-out (the method of traffic). The problem of storage capacity: the tanks, types. The materials for enological use: glass, plastic, steel, stainless steel, wood. 2. The main wine-making machines: Block diagram of the major wine-making machines: crushers, stalk, stalk-presses, dripping machine, racking machine, presses. Oenological pumps: positive displacement and centrifugal pumps. Curves, selection criteria, operating principles, the organization of a plant (regulation, pumps in series and in parallel). 3. The electrical current in the cellar: reminders of the main laws of electrical engineering, transformers, electric motors, electrical safety. 4. Refrigeration: The purpose of chilling, reversed Carnot cycle, efficiency refrigerators, refrigerants (characteristics and diagrams of equilibrium), the refrigeration cycle, system components (compressors, condensers, expansion systems, the evaporators). 5. The adjustment of temperature and humidity in the cellar: its aims, the heat balance of an environment, the Mollier diagram (description, changes isobars of humid air, the cycle of "summer"), components of plant. 6. The production and distribution of heat is heat in the wine industry, heat transfer fluids, production of steam (steam generators, temperature control), the distribution of the vapor (the piping, pressure drops, heat loss, ancillary elements of plant).
Prerequisites:  The Course requires good physical and technological knowledges so that the student could take the tipical aspects of the singolar step of the design of a system for the oenological production. Economical knowledges are also important to understand the main indexes for the evaluation of the correct dimension of the plants.
Preparatory instructions:  Applied Physical, Oenology I
Learning materials:  1. G. Nardin, A. Gaudio, G. Antonel, P. Simeoni, Impiantistica enologica, Edagricole
2. Pietro de Vita, Corso di Meccanica Enologica, Hoepli
3. Lesson notes
Other info:  During the lessons, we provide the basical elements for the development of the project of a winery. The students, divided into working groups, must submit, within the oral examination, a scheme designed to cover all project phases analyzed during the course.
Program of Viticultural and Enological Engineering - Teaching Unit 1: Winery Design (pdf version)
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