LV EN RU DE FR

Heat Sources

Course developer

Prior knowledge

Ener3027, Fundamentals of Heat Studies I

Ener3028, Fundamentals of Heat Studies II

Replaced course

VidEB002 [GVIEB002] Heat Sources

Course abstract

The aim of the study course is to acquire heat sources, its design and operation, water and steam boilers, those component parts: steam overheaters, water economizers, air preheaters. Boiler water parameters and water processing , the steam quality assurance the composition of flue gasses and measures of emission reduction are analyzed. Principles and operation of heat pumps are obtained. The construction of heat supply networks and basics of their calculations, pipes and insulation, heat exchangers calculation methods are included.

Learning outcomes and their assessment

Knowledges - the types, structure and operation of water and steam boilers and their separate components, as well as the construction and operation of the equipment providing them, the type of heat pumps and heat exchangers, the construction, operation, construction and characteristics of heat nets - laboratory work, tests 1, 2, 3;
Skills - to perform the assessment of the parameters of the boiler equipment, perform basic heat grid calculations, perform the basic heat exchanger calculation - home work, examination.

Competence - the assessment of the energy flow for the heat sources and transmission networks; the analysis, assessment of heat flow formation factors and the selection of heat generation and supply improvement solutions - examination.

Course Content(Calendar)

Full time intramural studies:
1. Classification of boiler equipment, major systems (Lectures 2 h)
2. Boiler operating principles, main parameters (Lectures 1 h)
3. Water boilers (Lectures 2 h)
4. Steam boilers (Lectures 2 h).
5. Furnace air heaters. (Lectures 1 h)
6. Feeding water economizers. (Lectures 1 h)
7. Steam superheaters. Steam temperature control devices. (Lectures 2 h)
8. Boiler water parameters, preparation (Lectures 3 h)
9. Maintaining of steam parameters. (Lectures 1 h)
10. Measurement of heat flow and produced heat (Lectures 1 h).
11. Measurement of vapor humidity – (Lectures 1 h)
12. Content of flue-gases. Reduction of emissions. (Lectures 2 h)
13. Heat pumps. Determination of the heat pump COP. (Lectures 2 h)
14. Construction of heat networks. (Lectures 1 h).
15. Heat network elements (Lectures 2 h).
16. Basic calculations for thermal grid elements (Lectures 2 h)
17. Heat exchange apparatus. (Lectures 2 h).
18. Calculation and selection of heat exchange apparatus (Lectures 2 h)
19. Heat balance of boiler plant. .(Lectures 2 h).

Practical works:
1. Energy losses. Test 1.( Practical works 2 h)
2. Water preparation for boiler plants. Test 2.( Practical works 2 h)
3. Reduction of harmful emissions from boiler equipment. Test 3. (Practical works 2 h)
4. Heat pumps. Determination of the heat pump COP. (Practical works 4 h)
5. Basic calculations for thermal grid elements (Practical works 2 h)
6. Calculation and selection of heat exchange apparatus (Practical works 3 h)
7. Heat balance of boiler plant. .(Practical work 1 h).
Home work. Calculation of the regenerative heat exchanger (LMTD).
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 topics:
1. Boiler plants, their characteristics;
2. Boiler water preparation, emissions;
3. Heat nets, heat pumps and heat exchangers.

A student shall be admitted to the examination only if all 3 tests have been credited, the work of the laboratory has been worked and defended, and the home work has been credited.

Description of the organization and tasks of students’ independent work

Home work: Calculation of the heat exchanger must be performed.

Preparation to tests and exam.

Criteria for Evaluating Learning Outcomes

The assessment of the study course examination shall consist of the sum of the number of points obtained:
- the correct comprehensive, broad answer: 3 points,
- a correct answer with small incompleteness or small errors: 2 points,
- a reply containing only correct basic concepts but without explanation 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. Šeļegovskis R. Siltuma ieguves tehnoloģijas. 1. daļa. Metodiskais līdzeklis. Jelgava: LLU TF, 2008. 97 lpp. Pieejams: http://www.tf.llu.lv/Mācību materiāli.
2. Gengel Y.A. Heat transfer. A practical approach. NewYork: Mc Graw Hill, 2004. 908 p.
3. Shah R.K., Dusan P. S. Fundamentals of Heat Exchanger Design. John Wiley & Sons Inc. 2003. 941 p.

4. Malek M. Power boiler design. NewYork: Mac Graw Hill, 2005. 628 p.

Further reading

1. Соколов Е.Я. Теплофикация и тепловые сети. Москва: МЭИ, 1999. 471 с.

Periodicals and other sources

1. Enerģētika & Automatizācija. Ikmēneša žurnāls. Izdevējs SIA Biznesa Portāls. ISSN 1407-8589

Notes

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