Lec # 01-Introduction-Energy Basics-Definition-types and Energy conversion.pptx

This lecture summarizes energy basics

1. REET3102 : Design and Installation of PV Home Systems Prof Nfah E. M, Department of Electrical and Electronic Engineering National Higher Polytechnic Institute ( NAHPI) Prof Asoh D A Department of Renewable Energy Higher Technical Teachers Training College (HTTTC) Dr . Jerome Ndam MUNGWE Department of Renewable Energy Higher Technical Teachers Training College (HTTTC ) University of Bamenda REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 1

2. Lec #01: Energy Basics Definition-Types-Energy Conversion-Energy Services 2 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025

3. Energy Basics Content Definition; Types of Energy Energy conversion systems Energy Services Lec #01 3 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025

4. Definition and Types of Energy 4 Definition of Energy: ability to do work (mechanical energy) However, different definitions are possible dependenting on the function of energy Types of Energy Mechanical ( p.e. (Elastic, graviational etc), k.e.( rotational, translational etc) Chemical Thermal Radian ( Electromagnetic Energy) Nuclear Law of Conservation of energy: can be converted from one form to another, but can not be created nor destroy. Energy in a closed system is constant REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

5. Energy Conversion Systems I - ENERGY TRANSFORMATION STAGES II – FROM PRIMARY ENERGY TO FINAL ENERGY TO ENERGY SERVICES 5 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

6. Energy Transformation stages Energy Conversion Systems 6 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

7. Stages of Energy - Primary energy Energy Conversion Systems 7 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

8. Stages of Energy - Final energy Energy Conversion Systems 8 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

9. Stages of Energy – Useful Energy Energy Conversion Systems 9 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

10. Stages of Energy Primary energy – embodied in resources as it is found in nature (coal, oil, natural gas in the ground) Final energy – sold to final consumers such as households or firms (electricity, diesel, processed natural gas) Useful energy – in the form that is used: light, heat, cooling and mechanical power (stationary or transport) Productive energy – the fraction of useful energy that we actually use Energy Conversion Systems 10 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

11. II – FROM PRIMARY ENERGY TO FINAL ENERGY TO ENERGY SERVICES Energy Conversion Systems 11 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

12. From Primary Energy to Final Energy Energy Supply energy flows driven by resource availability and conversion technologies Energy Conversion Systems 12 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

13. Energy Demand Energy system is service driven Quality and cost of energy services From Final Energy to Energy Services Energy Conversion Systems 13 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

14. Final Energy from 1971-2018 14 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Conversion Systems

15. Final Energy from 1971-2018 15 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Conversion Systems

16. Final Energy per capita in 2010 Heterogeneity in Final Energy Use per capita: IAASA – Global Energy Assessment 2012 16 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Conversion Systems

17. What is Final Energy used for? 17 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

18. From Primary Energy to Energy Services What is the energetic service? Energy Services 18 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

19. From useful energy to energy services Passive systems are the final technical part of the energy chain and do not convert energy; instead they lose energy as low-grade heat (Cullen and Alwood , 2010). Energy Services 19 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

20. From Primary Energy to Energy Services – a global perspective Energy Services 20 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics

21. UK 1800-2000 IAASA – Global Energy Assessment 2012 21 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

22. Regular expansion of energy services in 19 th dominated by heat and transport High volatility due to political and economic events Moderated growth after 1950 Decline in industrial energy services compensated by strong growth in transport Saturated at a level of 6 EJ or 100 GJ/capita What about energy services? IAASA – Global Energy Assessment 2012 22 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

23. UK 1800-2000 Increasing efficiencies in converting final energy to energy services Ranges between a factor of 5 for transportation and 600 for lighting IAASA – Global Energy Assessment 2012 23 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

24. From Final Energy to Energy Services 24 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

25. From Final Energy to Energy Services 25 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

26. From Final Energy to Energy Services 26 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

27. Energy Services 2005 Energy services cannot be expressed in common units Transport 13 km/day/per capita 1 ton 20 km/day/per capita Industry 9 ton/year/per capita (steel + fertilizers + construction materials + plastics … Buldings Heating/cooling to 20m 2 /per capita Useful energy minimizes distortions among different energy service categories, as it most closely measures the actual energy service provided. 27 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025 Energy Basics Energy Services

28. END 28 REET3102:Design and Installation of PV Home Systems Prof Nfah - Prof Asoh - Dr Mungwe 2024/2025