Prerequisite/Recommended prerequisite for
participation in the module
The module adds to the knowledge obtained in Heat transfer;
Fundamentals of CFD; Combustion theory; Fluid mechanics.
Content, progress and pedagogy of the
module
Learning objectives
Knowledge
- Understand solid biomass feedstock: Fuel characterisation,
thermochemical conversion and the various sub-processes, heat and
mass transfer in biomass thermochemical conversion
- Understand radiation heat transfer without participating
medium: Fundamentals, view factors, surface resistance and space
resistance, network method
- Understand radiation heat transfer with participating medium:
Radiative properties of gas mixture, radiative transfer equation,
modelling of radiative heat transfer
- Have knowledge about biomass gasification and combustion on
particle scale: Time scale analysis, ignition mechanisms, reactions
of gasification, regimes of char reactions, modelling of biomass
particle conversion
- Have knowledge about biomass gasification on reactor scale:
Principles, key factors, types of gasifiers and their key
characteristics, gasifier design, success stories of biomass
gasification
- Have knowledge about suspension-firing of biomass: NOx control
by combustion, different arrangements of suspension-firing,
modelling of suspension-firing – overview and specific issues, case
studies
- Have knowledge about grate-firing of biomass: Key components in
grate boilers, breakthrough, potential problems and solutions,
modelling of grate-firing – general strategy and examples
Skills
- Be able to identify the appropriate utilisation technology for
a given biomass based on its properties
- Understand thermal radiation heat transfer, various
applications, and advanced modelling of radiation heat transfer
without and with participating medium
- Understand the mechanisms and the key issues in biomass
gasification and the modelling
- Understand the key sub-processes in biomass combustion and
various key biomass combustion technologies (their advantages and
disadvantages, and modelling strategies)
- Be able to developing key sub-models for biomass conversion and
implementing them into commercial CFD
Competences
- Have in-depth understanding of all the important issues in
biomass gasification and combustion, including combustion physics
(e.g., radiative heat transfer, turbulent flow) and combustion
chemistry (e.g., pyrolysis, homogeneous and heterogeneous
reactions)
- Be able to develop sub-models and codes for the key, special
processes in biomass gasification and combustion process and
ability to perform a reliable CFD of biomass gasifier and
combustor
Type of instruction
Lectures in combination with tutorials, assignments and hands-on.
Extent and expected workload
Since it is a 5 ECTS course module, the work load is expected to
be 150 hours for the student.
Exam
Exams
Name of exam | Biomass Gasification, Combustion and their Advanced
Modelling |
Type of exam | Oral examination |
ECTS | 5 |
Permitted aids | With certain aids, see list below
Unless otherwise stated in the course description in Moodle, it is
permitted to bring all kinds of (engineering) aids including books,
notes and advanced calculators. If the student brings a computer,
it is not permitted to have access to the Internet and the teaching
materials from Moodle must therefore be down loaded in advance on
the computer. It is emphasized that no form of electronic
communication must take place. |
Assessment | 7-point grading scale |
Type of grading | Internal examination |
Criteria of assessment | As stated in the Joint Programme Regulations.
http://www.engineering.aau.dk/uddannelse/studieadministration/ |