| CODE | 66131 |
|---|---|
| ACADEMIC YEAR | 2022/2023 |
| CREDITS |
|
| SCIENTIFIC DISCIPLINARY SECTOR | ING-IND/02 |
| LANGUAGE | Italian |
| TEACHING LOCATION |
|
| SEMESTER | 1° Semester |
| TEACHING MATERIALS | AULAWEB |
During the lectures of Marine Engineering A will be illustrated the principles of operations and the design techniques for both marine propulsion plants and auxiliary systems. The rules leading the certification process will be analyzed with some practical examples.
The course aims at providing students with the tools for a qualified design, from a technical standpoint and legal , facilities related to the propulsion of ships .
The course aims to provide students with the tools for a qualified design, from the technical and regulatory point of view, of the propulsion system and auxiliary systems of pleasure boats. At the end of the course, the students will have the knowledge to preliminarily design a propulsion plant for a pleasure boat, and some of its auxiliary systems, respecting the regulations in force.
Basic knowledge of physics, thermodynamics and hydrodynamics. Basic knowledge of the principles of naval architecture.
Classroom lectures and exercises, Industry expert workshops and educational visits.
1. Ship Propulsion Plant
a. Propulsion Plant. Introduction. Main components. Prime Engine. Propulsion Chain transmission. Propulsor. Design Aspects.
b. Prime Engine Classification. Diesel Engine Technical Characteristic. Application in the function of ship types.
c. Propulsors Classification. Range of application in function of propulsion layout and ship speed. Pros and Cons of a different solution.
d. Chain propulsive. Power chain and Propulsive efficiencies.
e. Engine Technical Characteristic. Working principles of 2T and 4T Engine. Common Rail. Engine Diagram. Power Ratings.
f. Ship Engine Fuel. Types and characteristic of marine fuels.
g. Engine Margine and Service Margine. Engine margine and Service margine principle. Methodology to choose the prime mover engine.
h.Engine operation prediction with fixed blade propeller. Procedure for calculating propulsion equilibrium points. Autonomy calculation. Propeller “ideal” power request.
i. Energy Efficiency. Propulsion energy efficiency, evaluation and solution for enhanced
j. Gear-Box. Working principles, procedure for choosing the gear-box. Trolling mode. Gear wheel sizing.
k. Thrust Bearing. Purposes and principle of operation.
l. Transmission Line. Transmission Lines, bearings, thrust bearings, stern-tube, loads acting on the shaft. Drawing and sizing.
m. Propulsion system Schematics. Propulsion systems and engine room general layouts. Diesel-Electric Hybrid System.
n. Exercises. Numerical exercises: propeller-engine matching, gearbox chosen, shaft line diameter evaluation.
2. Ship Auxiliary Systems
a. Introduction. System design criteria. Regulations. Classification of systems. Bernoulli's theorem. Request head calculation.
b. Pump characteristics. Pumps operations in series. Pumps operations in parallel. Matching pump-circuit. Required Power Calculation. Energy Consumption.
c. System Components. Valves Types. Filters Types. Pipe Sizing.
d. Bilge System. Operation, components, drawing in the three views, ISO standards, sizing and choice of components.
e. Fire Fighting. Regulations, notes on fire extinguishing methods, active and passive protection.
f. Fuel System. Operation, components, drawing in the three views, standards, sizing and design choices.
g. Fresh water System. Overview, components, autoclave details, one-line diagrams
h. Black Water system. Purpose and operation, regulations, components, one-line diagrams, sizing.
i. Grey Water System. Purpose and operation, gravity grey-water system, vacuum grey-water system, components, drawing layout, installation solutions, sizing.
j. Sea Water System. Overview, drawings, regulations, sizing.
k. Ventilation System. Overview, purposes, components, one-line diagrams, plant solutions, sizing.
l. Exhaust System. Overview, purposes, noise attenuation, muffler, separator, submerged exhaust outboards, plant solutions, drawings, back-pressure evaluation.
m. Bow and Stern Thruster. Characteristics, designs, types, equilibrium of moments, sizing, bollard pull functioning, selection from the catalogue.
n. Wheelhouse. Operating principle, definitions, types of rudders, sizing using regulations.
Exercises. Numerical exercises: calculation of the head required by the circuit, calculation of pipe thicknesses.
The program may be modified during the course
Office hours: It is mandatory to book a time slot, through the service offered by Aula Web, on the course page you will find dates and times.
MICHELE MARTELLI (President)
NICOLO' FAGGIONI
MASSIMO FIGARI
BRUNO SPANGHERO (President Substitute)
The exam involves a written test, a sufficicient grade is essential for admission to the oral examination. The written test will consist of a numerical exercise, a theory question and an systems drawing. The oral exam will consist of open questions. The exam is considered successfully pass if both tests are sufficient. The final grade will be the average of the written and oral grades. Online registration for exams is required, the appeals calendar is available on www.unige.it. There are no extraordinary exam appeals.
The written exam will verify the effective understanding of the topics discussed and the ability to independently design a generic propulsion plant or systems. During the oral examination the quality of the exposure, the correct use of the specialized vocabulary, the capacity for critical reasoning on the topics covered during the module will be evaluated.
| Date | Time | Location | Type | Notes |
|---|---|---|---|---|
| 11/01/2023 | 14:00 | LA SPEZIA | Scritto + Orale | |
| 09/02/2023 | 14:00 | LA SPEZIA | Scritto + Orale | |
| 08/06/2023 | 14:00 | LA SPEZIA | Scritto + Orale | |
| 12/07/2023 | 14:00 | LA SPEZIA | Scritto + Orale | |
| 13/09/2023 | 14:00 | LA SPEZIA | Scritto + Orale |