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Course title Heat Engineering
Course code Ener4040
Credit points (ECTS) 6
Total Hours in Course 162
Number of hours for lectures 48
Number of hours for seminars and practical classes 16
Independent study hours 98
Date of course confirmation 25/09/2019
Responsible Unit Institute of Engineering and Energetics
 
Course developers
Dr. sc. ing., asoc. prof. Raimunds Šeļegovskis
There is no prerequisite knowledge required for this course
 
Course abstract
The aim of the course is to take on theoretical grounds for thermodynamics, students learn to calculate work and heat in thermodynamic processes and cycles, balance of energy in heat equipment and cooling plants. The understanding of thermodynamic fundamentals of the operation of heat and cooling equipment and regularities of heat transition are developing. Students shall acquire knowledge of primary energy resources, their composition, parameters, applications, methods and techniques for burning gaseous, liquid and solid fuels. Basic knowledge of combustion plants is obtained. Students learn the basic principles of the operation and construction of boiler equipment and their components, the types of heat exchange apparatus, their basic calculations.
Learning outcomes and their assessment
1. Knowledge - fundamentals of thermodynamics, the formation of the energy balance of heat installations, the thermodynamic working grounds for heating and cooling equipment, the regularities of heat transfer and the factors affecting it, the types of primary energy resources, their characteristics, composition, parameters, the regularities of the combustion process, the structures and functioning of the various fuel combustion organisations and plants, boiler plants, heat exchangers and building heating systems construction and operational frameworks — tests 1 and 2, houseworks 1 and 2.
2. Skills - performing thermodynamic process analysis, calculation of energy flows for thermal engineering equipment, basic heat transfer calculations (test 1), calculation of heat obtained in combustion processes, assessment of losses in the heat producing process (test 2); undertaking assessment of basic parameters for heat producing equipment and heat exchangers (home work 1), calculation of key parameters for the basic elements of the water heating system (home work 2);
3. Competence - assessment of energy flows for a given thermal equipment, building or other facility, calculation of heat flows and choice of solutions for improving heat use, assessment of the energy sources compliance to economic, ecological and comfort criteria, analysis of heat flow formation factors, evaluation and choice of heating solutions (tests, home works).
Course Content(Calendar)
1. Basic concepts of thermodynamics. Thermodynamic parameters. 2 h
2. Thermodynamic processes. 2 h
3. Ideal gas. The equation of the state of gas. Heat capacity. 2 h
4. Gas mixtures. Basic laws of thermodynamics. 2 h
5. Thermodynamic cycles. Carnot cycle. 2 h
6. Real gases, their state equations.1 h
7. Water steam, it’s parameters. 2 h
8. Vapour-gas mixtures. Wet air, it’s parameters. Transition of heat and mass. 2 h
Practical works: calculations of thermodynamic parameters. 4 h
9. Thermodynamic cycles of equipment. Cycles of internal combustion engines. 2 h
10. Thermodynamic cycles of steam equipment. 2 h
11. Thermodynamic cycles of refrigerating appliances and heat pump. 2 h
12. Types of heat exchange, basic concepts, heat transition. 2 h
13. Heat conduction. 2 h
14. Heat convection. 1 h
15. Radiance of heat. 2 h
Practical works: calculations of heat transfer. 4 h
Test 1: calculations of thermodynamic parameters and heat transfer. 1 h
16. Primary energy sources, composition, properties. Calorific value. 2h
17. Solid fuels: combustion types, aspects of use. 2 h
18. Liquid fuels: properties, aspects of use. Combustion. Burners. 2 h
19. Gaseous fuels: properties, aspects of use. Combustion. Burners. 2 h
20. Furnaces, their types, constructions, characteristics, classification. 1 h
Practical works: Basic calculations of combustion processes. 3 h
Test 2: Basic calculations of combustion processes. 1 h
21. Industrial boiler plants, their main systems, elements. 3 h
22. Steam and water boilers. 2 h
23. Heat exchangers, their types, structure, operational principles. 2 h
24. Design (LMTD method) and test (NTUI method) calculation of heat exchangers 1 h
Home work 1: Calculations of heat exchanger.
25. Heating systems for buildings, their main elements, choice of them. 3 h
26. Control of building heating systems, heating regulators. 2 h
Practical works: calculation of key elements of the heating system of the building. 2 h
Home work 2: Selection and calculation of key elements of the heating system of the building.
Requirements for awarding credit points
Written exam. The exam consists of three questions on the following topics: 1. Boiler equipment, their parameters; 2. Boiler water preparation, emissions; 3. Heating networks, heat pumps and heat exchangers. A student is allowed to take the exam only if both tests and both homework assignments have been passed. Attendance at least 75% of classes is mandatory.
Description of the organization and tasks of students’ independent work
Students prepare themselves for tests and perform a home work.
Criteria for Evaluating Learning Outcomes
The exam grade is the sum of the points obtained for each exam question answer:
-Correct comprehensive, broad answer: 3 points,
-Correct answer with minor shortcomings or errors: 2 points,
-Answer containing only basic concepts without explanation or containing significant errors: 1 point,
-No answer, incorrect answer, very serious significant errors in the answer: 0 points. By obtaining 9 points, answering additional questions, it is possible to obtain a grade of 10 – excellent.
Compulsory reading
1. Yunus A. Cengel. Heat Transfer: A Practical Approach. NewYork: Mc Graw Hill, 2004. 908 p.
2. Malek M. Power boiler design. NewYork: Mac Graw Hill, 2005. 628 p.

3. Shah R.K., Dusan P. S. Fundamentals of Heat Exchanger Design. John Wiley & Sons Inc. 2003. 941 p.
4.Nagla J, Saveļjevs P., Turlajs D. Siltumenerģētikas teorētiskie pamati. Rīgas Tehniskā universitāte. Transporta un mašīnzinību fakultāte. Siltumenerģētisko sistēmu katedra. Rīga: RTU, 2008. 192 lpp.
5.Lemba J. Tehniskā termodinamika. Rīga:RTU, 1995. 197 lpp. 6.Nagla J, Saveļjevs P, Ciemiņš R. Siltumtehnikas pamati. Rīga : Zvaigzne, 1981. 356 lpp.
Further reading
1. James E Brumbaugh. HVAC Fundamentals. 4th edition. Wiley publishing, 2004. 697 p.
Notes
Compulsory course in the professional bachelor's program Biosystems machinery and technologies.