Podcast
Questions and Answers
What percentage of Armenia's energy supply is imported?
94%
Fossil fuel: ___________
Total percentage of fossil fuel energy supply worldwide
Nuclear: ___________
Total percentage of nuclear energy supply worldwide
Hydropower: ___________
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Renewable: ___________
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What is all the energy worldwide used for by sector?
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What was the percentage of fuel for transport that was fossil fuel in 2023?
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What year had a notable increase in cars per 1000 population?
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What is the total number of cars in the world estimated for 2023?
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Study Notes
Energy Supply Overview
- Primary Energy Sources: Primary energy sources include coal, gas, oil, nuclear, hydro, biomass, wind, solar, geothermal, tidal, and wave energy.
- Fossil Fuels: Fossil fuels (coal, gas, oil) are non-renewable.
- Renewable Energy: Renewable energy sources (hydropower, wind, biomass, solar, geothermal, tidal, and wave) are constantly being replenished.
Energy Demand Overview
- Energy Services: Energy services we obtain from primary energy sources include electricity, heat, and transport.
Lowering Demand: Case for Energy Efficiency
- Thermal Comfort: Measures to improve thermal comfort include insulation, weatherization, and passive solutions.
- Insulation & Weatherization: Insulation and weatherization help reduce heat loss and gain.
- Lighting: Energy-efficient lighting can significantly reduce energy consumption.
- Passive Solutions: Passive solutions utilize natural resources like sunlight and wind for heating and cooling.
- Heat-Island Effect: The heat-island effect is the phenomenon of urban areas being warmer than surrounding rural areas due to materials like concrete and asphalt.
- Refrigerant Management: Proper refrigerant management reduces greenhouse gas emissions.
Energy Flow: From Primary to Useful Energy
- Primary Energy: Primary energy sources are used to generate electricity, fuels, and heat.
- Secondary Energy: Examples of secondary energy include gasoline, CNG, LNG, and electricity.
- Final Energy: Final energy is delivered to end-users in the form of electricity, heat, and fuels.
- Useful Energy: Useful energy is the energy that is actually used for a specific purpose, like powering a light bulb or heating a house.
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Losses: There are significant losses during the conversion and transmission of energy:
- Equipment Losses: Energy is lost during the operation of equipment.
- Transmission Loss: Energy is lost during the transmission of electricity.
- Transformation Loss: Energy is lost during the conversion of energy forms.
Armenia's Energy Balance (2020)
- Energy Import Dependence: Armenia imports 94% of its energy.
Total Energy Supply Worldwide
- Fossil Fuel: Fossil fuels account for the majority of the world's energy supply.
- Nuclear: Nuclear energy contributes a significant percentage to the world's energy supply.
- Hydropower: Hydropower is a significant renewable energy source globally.
- Renewable: Renewable energy comprises a growing portion of the world's energy supply.
Energy Usage by Sector Worldwide
- Transportation: Transportation is the sector with the highest energy consumption.
Transport Growth and Fossil Fuels
- Car Ownership: The number of cars in the world has increased significantly over the last few decades.
- Fossil Fuel Dependence: Fossil fuels account for 95% of the fuel used in transportation.
Decarbonization
- Decarbonization: Reducing carbon emissions through the use of renewable energy sources is crucial to mitigate climate change.
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Description
This quiz covers the fundamentals of energy supply and demand, highlighting various primary energy sources including fossil fuels and renewables. It also discusses energy services and strategies for enhancing energy efficiency, such as insulation and energy-efficient lighting. Test your knowledge on the approaches to lowering energy demand and improving thermal comfort.
