Course code Ener3028

Credit points 2

Fundamentals of Heat Studies II

Total Hours in Course80

Number of hours for lectures24

Number of hours for seminars and practical classes8

Independent study hours48

Date of course confirmation17.12.2014

Responsible UnitInstitute of Energetics

Course developer

author Enerģētikas institūts

Raimunds Šeļegovskis

Dr. sc. ing.

Prior knowledge

Ener3027, Fundamentals of Heat Studies I

Course abstract

Students get knowledge about properties, composition, use of solid, liquid and gas fuels. During studies, the basics of combustion theory, methods of combustion and techniques are being acquired. Students get skills to calculate the heat amount, parameters of flue gasses and combustion processes, to choose draught equipment. They obtain knowledge and understanding of combustion process organization and equipment, and it’s component parts: burners, furnaces, those design, parameters, ash removing.

Learning outcomes and their assessment

Knowledges: types of primary energy resources (fuels), their characteristics, composition, parameters, combustion processes, factors affecting them, the combustion organisation of different fuels and equipment - examination
Abilities: analysis and calculation of combustion processes, assessment of losses in the heat production process in equipment – test,
assess the suitability of the fuel concerned for a particular installation, the quality of its combustion organisation - examination;
Competencies: evaluating the operation of combustion plants and making recommendations to improve it; assessing the eligibility of used fuels to economic, ecological and comfort criteria - examination.

Course Content(Calendar)

1. Fuel types, composition, properties. 2 h
2. Chemical combustion reactions. The air excess factor. 2 h
3. Highest and lower calorific value. Burning types.
4. Solid fuels: types, parameters, properties, aspects of use. 2 h
5. Liquid fuels: types, parameters, properties, aspects of use. 3 h
6. Gaseous fuels: types, parameters, properties, aspects of use. 2 h
7. Production of biogas from waste, wastewater and agricultural waste. 3 h
8. Insinerators, wood-chip boilers.
9. Furnaces, their types, constructions, characteristics, classification.
10. Heat balance of combustion plants.
Test: fuel parameters and combustion processes.
11. Combustion of gaseous fuels. Gas burners. 2 h
12. Combustion of liquid fuels. Burners for liquid fuels. 2 h
13. Burning of solid fuels. Layering and flow technologies. 2 h
14. Pulverized solid fuels. Procesing of them. 3 h
15. Slag formation. Ash removal. 2 h
16. Cyclonic furnaces.
17. Furnace-bar furnaces. 2 h

Requirements for awarding credit points

A written exam.
The exam consists of three questions:
1. fuels, their characteristics;
2. Combustion processes and factors affecting them;
3. Equipment and appliances for the combustion of fuels and the production of heat energy.
The student shall be admitted to the examination only if the test has been credited.

Criteria for Evaluating Learning Outcomes

The assessment of the study course examination shall consist of the sum of the number of points obtained for each examination question answer:
- the correct comprehensive, broad answer: 3 points,
- a correct answer with small incompleteness or small errors: 2 points,
- a reply containing only basic concepts without explanations or containing essential errors: 1 point,
- there is no answer, the answer is wrong, there are very serious errors in the answer: 0 points.
By getting 9 points, there is the possibility of conducting interviews that result in a 10 – excellent mark, being obtained by the student showing the appropriate knowledge and understanding.

Compulsory reading

1. Stephen R. T. An introduction to combustion: concepts and applications. 2nd. ed. Mc Graw – Hill, 2000. 675 p. 2. Nagla J., Saveļjevs P., Ciemiņš A. Siltumtehnikas pamati. Rīga: Zvaigzne, 1981. 355 lpp.

Further reading

1. Nagla J. Kurināmais, degvielas un degšanas teorija. Rīga: RTU, 2006. 11 lpp. 2. Aserītis V. Kurināmais un degšanas teorija: Metodiskais līdzeklis. LLU, 1996. 72 lpp.