Learning objectives
Knowledge and understanding:
Development of the ability to design and select the fluid machinery used in food industries.
Applying knowledge and understanding:
The student should be able to set the design of fluid machinery
Making judgments:
At the end of the course, the student should be able to evaluate, with critical mind, the best solutions in the field of fluid machinery used in the food industry.
Communication skills:
The student should be able to clearly present the knowledge acquired by the course.
Prerequisites
- - -
Course unit content
The purpose of the course is to present a review of the main fluid machines which found applications in the food industries.
Full programme
Analysis criteria for fluid machinery: St. Venant equation, Hugoniot equation, orifice equation, bulk modulus, high temperature dissociation, adiabatic temperature of combustion products, flame structure, similarity in the study of fluid machinery.
Reciprocating compressors, clearance volume, staging, intercooling; rotary (displacement) compressors, internal and backflow compression; reciprocating and rotary pumps, pressure ripples and dampers. Centrifugal pumps, theoretical and actual characteristics, radial thrust, multistage pumps, cavitation, priming, peripheral pumps, series and parallel. Turbo-compressors, stall, surge, multistage compressor characteristic, operating field, choking, rotating stall. Free leaks pumps; ejector.
Fundamentals of thermal plants, cycles and pseudo-cycles, 2nd law, quality number for direct cycles, fuel types and their properties;
Bibliography
Dossena, Ferrari, Gaetani, Montenegro, Onorati, Persico - Macchine a fluido - Città studi Edizioni
For further information:
Acton O. & Caputo C. - Collana di Macchine a fluido, 4 voll.- UTET, Torino
Teaching methods
Frontal lectures.
Educational material will be periodically uploaded to the Elly platform to support the lessons and to deepen their contents.
To access these contents (which are an integral part of the course) it is necessary to register for the on-line course.
Assessment methods and criteria
The exam consists of
- a written test consisting of a numerical exercise and five structured questions;
- an oral test consisting of two questions.
Admission to the oral test is subject to passing the written test.
The written test is passed if the exercise is correctly solved and a minimum score of four is obtained in the structured questions.
Other information
Some numerical exercises are presented.
Lectures attendance is highly recommended.
Non-attending students are invited to consult the Elly platform on which the topics actually presented in class will be periodically listed.
