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Fundamentals of Heat Studies II

Course developer

Prior knowledge

Ener3027, Fundamentals of Heat Studies I

Course abstract

The aim of the study course is to 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

Knowledge - types of primary energy resources (fuels), their characteristics, composition, parameters, combustion processes, factors affecting them, the combustion organization of different fuels and equipment - examination
Skills - 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 organization - examination;

Competence - 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)

Full time intramural studies:
1. Fuel types, composition, properties. (Lectures - 1h, Practical works - 1h)
2. Chemical combustion reactions. The air excess factor. (Lectures - 1h, Practical works - 2h)
3. Gross and net calorific value. Burning types. (Lectures - 1h, Practical works - 2h)
4. Solid fuels: types, parameters, properties, aspects of use. (Lectures - 2h )
5. Liquid fuels: types, parameters, properties, aspects of use. (Lectures - 2h )
6. Gaseous fuels: types, parameters, properties, aspects of use. (Lectures - 2h )
7. Production of biogas from waste, wastewater and agricultural waste. (Lectures - 2h )
8. Incinerators, wood-chip boilers. (Lectures - 1h )
9. Heat balance of combustion plants. (Lectures - 1h, Practical works - 2h)
10. Combustion of gaseous fuels. Gas burners. (Lectures - 2h )
11. Combustion of liquid fuels. Burners for liquid fuels. (Lectures - 2h )
12. Combustion of solid fuels. Layering and flow technologies. (Lectures - 2h )
13. Pulverized solid fuels. Processing of them. (Lectures - 1h )
14. Furnaces, their types, constructions, characteristics, classification. (Lectures – 2h)
15. Slag formation. Ash removal. (Lectures - 1h)
16. Cyclonic furnaces. Furnaces with furnace-bars. (Lectures - 2 h)
Test: exercises about fuel parameters and combustion processes.( Practical works - 1h)
Part time extramural studies:

All topics specified for full time studies are accomplished, but the number of contact hours is one half of the number specified in the calendar

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.

Description of the organization and tasks of students’ independent work

Students independently prepare for exams and tests.

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.

Notes

Compulsory course in full-time and part-time studies of professional higher education bachelor study program Applied Energy Engineering.