Course content

Introduction to machinery systems for ships and offshore installations. Transport of fluids by means of pumps and piping systems. Cargo handling, ballast, and fuel oil systems. Power hydraulics. Description and systems analysis of main machinery for propulsion and production of electric power. Power consumption and operating profiles as basis for design of machinery systems and analysis of systems performance. Matching of machinery and propulsor.
Marine fuel types and primary energy conversion by combustion. Air pollution. Characteristics of diesel engines and gas turbines, construction and internal loading. Main factors affecting power, energy utilization and exhaust emissions.
Introduction to concepts, definitions, models, and methods for system reliability, risk and safety assessments. Methods for calculating and assessing basic system availability, and economic analyses.

Learning outcome

The subjects Marine Technology Intro and Marine Technology 1, 2, 3 and 4 shall together enable the students to describe and understand the basics of marine technology and carry out engineering tasks related to design, construction and operation of marine systems. In addition they shall give the student a proper set of tools and methods for carrying out such work and training in the skills of communication and teamwork. Marine Technology 4 shall provide understanding of modes of operation and performance with emphasis on design and operation of main and auxiliary machinery, transport of fluids by means of pumps and piping systems, as well as reliability analysis of machinery systems.

Upon completing the course the student should be able to:

Marine engineering systems:

- Analyse and calculate the power requirements and efficiency of different machinery systems aboard ships and offshore installations, with application to system design, equipment selection and sizing, and optimization of operation
- Understand and calculate pressure loss and flowrate in pumps and piping systems, and find an optimal solution for flow regulation, choice of pump size and selection of piping diameter.
- Design, select and size components for hydraulic power transmission systems for applications such as thrusters, heave compensation, steering gear, winches and cranes etc.
- Understand the basic principles of electrical machinery and carry out an electrical load analysis and electric power balance for a vessel or an offshore platform.

Main machinery:

- Quantify the power requirement of vessel at various phases of operation and establish operating profiles. Compute fuel consumption and exhaust emissions based on a specified operating profile, and also evaluate how changes in the operating profile may influence fuel consumption and exhaust emissions. Use basic principles in design of the main machinery system base don a specified operating profile.
- Understand basic principles of combustion and know elementary terms like heating value, excess air ratio, lean and fuel-rich combustion. Perform simple computations of the combustion process base don energy and mass balance.
- Describe and analyze working cycles of internal combustion engines and gas turbines by means of p-V and T-s diagrams. Calculate simple thermodynamic cycles in order to evaluate energy utilization and produced work.
- Explain the main components of the machines, the principles of energy conversion and typical operating characteristics of diesel engines and gas turbines. Explain terms used for describing performance of diesel engines and gas turbines related to power, energy utilization and exhaust emissions.
- Compute, by means of mass and energy balance and simple process models, how performance of diesel engines and gas turbines is affected by external factors (atmospheric conditions, fuel quality) and internal factors (compression ratio, charge air pressure/pressure ratio in compressor, inlet temperature at turbine, etc.)

System reliability:

- Understand the basic meaning of component reliability and be able to quantify reliability through the reliability function, failure rate function, and life time models.
- Understand and calculate system reliability in terms of reliability block diagrams and structure functions. Be able to explain how the reliability of a system can be improved through redundancy, k-o-o-n structures, and bridge structures.
- Understand and utilize cut sets, path sets, and fault tree analysis (FTA) to characterize and understand the reliability of complex systems with safety barriers.
- Understand the basic meaning of system availability and how it can be characterized by mean time between failure (MTBF) and mean downtime (MDT). Be able to calculate the availability of complex and redundant systems.
- Understand how a system’s reliability can be improved through preventive maintenance and be able to analyze the impact of a maintenance program.
- Understand the meaning of a system’s life cycle. Be able to use basic economic criteria, such as net present value, internal rate of return, and payback period, to assess maintenance strategies.
- Understand basic concepts of risk and safety assessments.

Learning methods and activities

Lectures, project assignment, laboratory exercises and conventional exercises. The project assignment and laboratory exercises carried out in groups, and some exercises are mandatory. 75% of the other exercises are required for access to the exam. Portfolio assessment is the basis for the grade in the course. The portfolio includes a final written exam (70%) and exercises (30%). The results for the parts are given in %-scores, while the entire portfolio is assigned a letter grade. If there is a re-sit examination, the examination form may change from written to oral.

Compulsory assignments

• Assignment
• Exercises

Recommended previous knowledge

TEP4110 Fluid Mechanics.

Course materials

To be announced at the start of the semester. (Textbook, lecture notes).

Credit reductions