Sustainable Energy Management Quiz
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Questions and Answers

Renewable energy will be discussed along with their examples in the ______.

Philippines

The conversion of sunlight into usable energy forms is referred to as ______ energy.

solar

Direct radiation is the radiation from the sun that reaches the Earth without ______.

scattering

The amount of solar energy available at a location depends on its geographic ______.

<p>latitude</p> Signup and view all the answers

Learning Outcome 3 involves selecting appropriate design treatment schemes for waste ______.

<p>disposal</p> Signup and view all the answers

Major constraints in pursuing RE in the Philippines include insufficient fiscal and financial ______.

<p>incentives</p> Signup and view all the answers

The absence of a commercially viable market for RE systems is another major ______.

<p>constraint</p> Signup and view all the answers

The life cycle of energy systems helps determine environmental burdens from cradle to ______.

<p>grave</p> Signup and view all the answers

For photovoltaics (PV), the operational processes contribute to ______% of CO2e emissions.

<p>21%-26%</p> Signup and view all the answers

Wind energy generation has approximately ______ g CO2e/kWh during power generation stages.

<p>35</p> Signup and view all the answers

One of the most efficient solar electric technologies is found in ______, US.

<p>Arizona</p> Signup and view all the answers

Flat plate solar collectors are mostly used in heating water for ______.

<p>showers</p> Signup and view all the answers

Heliostats utilize two-axis tracking mirrors to concentrate solar ______.

<p>radiation</p> Signup and view all the answers

One advantage of solar photovoltaics is that module manufacturing allows for ______ of scale.

<p>economies</p> Signup and view all the answers

A disadvantage of PV is that power output is limited to times when the sun is ______.

<p>shining</p> Signup and view all the answers

Biomass energy can be produced by burning wood, bark, branches, and other plant and animal ______.

<p>materials</p> Signup and view all the answers

San Carlos Biopower Inc. in Negros Occidental uses agricultural wastes such as sugarcane ______ for energy production.

<p>trash</p> Signup and view all the answers

Burning biomass generates heat, which is then used to produce ______.

<p>steam</p> Signup and view all the answers

Diffuse radiation is radiation that is scattered by the atmosphere and ______.

<p>clouds</p> Signup and view all the answers

A solar thermal collector converts solar radiation into useful ______.

<p>heat</p> Signup and view all the answers

The Parabolic Trough Solar Thermal System uses mirrors to concentrate sunlight onto a ______ tube.

<p>receiver</p> Signup and view all the answers

The Central Tower Solar Thermal System utilizes numerous ______ to reflect sunlight.

<p>heliostats</p> Signup and view all the answers

The fluid medium in the Central Tower System can be water, fused ______, or air.

<p>salt</p> Signup and view all the answers

The Linear Fresnel Solar Thermal System features a one-axis solar ______.

<p>tracking</p> Signup and view all the answers

Parabolic Dish Solar Thermal System focuses sunlight on an ______ with a cavity receiver.

<p>engine</p> Signup and view all the answers

Solar Thermal technologies are accepted worldwide for applications in ______, industries, and hotels.

<p>domestics</p> Signup and view all the answers

Renewable and non-renewable sources are our options as energy ______.

<p>sources</p> Signup and view all the answers

Denmark aims to use 100% renewable energy in energy and transport sectors by ______.

<p>2050</p> Signup and view all the answers

In 2017, Denmark produced 28.6% of its energy from ______ sources.

<p>non-renewable</p> Signup and view all the answers

Fossil fuels account for over ______% of the global energy mix.

<p>80</p> Signup and view all the answers

The energy mix of a region depends on the availability of usable resources and historical, economic, social, demographic, environmental, and ______ factors.

<p>geopolitical</p> Signup and view all the answers

In the Philippines, higher energy production comes from ______ compared to South Korea and Germany.

<p>coal</p> Signup and view all the answers

The main renewable energy sources mentioned include hydropower, geothermal, biomass, and ______.

<p>solar</p> Signup and view all the answers

Germany and South Korea incorporate ______ power into their energy mix.

<p>nuclear</p> Signup and view all the answers

The steam is used by a steam ______ to produce electricity.

<p>turbine</p> Signup and view all the answers

Falling water produces energy which is harnessed through ______ to contribute to total energy supply.

<p>hydropower</p> Signup and view all the answers

In the Philippines, ______ Falls and Agus VI Hydroelectric Plant supply 200 MW of electricity.

<p>Maria Cristina</p> Signup and view all the answers

Less destructive alternatives to dams include low-head hydropower technologies and high-efficiency ______.

<p>turbines</p> Signup and view all the answers

Wind energy is captured using turbines to generate ______.

<p>electricity</p> Signup and view all the answers

An example of wind energy in the Philippines is the ______ Wind Farm in Rizal.

<p>Pililla</p> Signup and view all the answers

Energy is the main driver of every nation's ______.

<p>economy</p> Signup and view all the answers

The potential for wind energy in the Philippines can be found on the ______ parts of the map.

<p>redder</p> Signup and view all the answers

Flashcards

Solar Photovoltaics (PV)

A technology that directly converts sunlight into electricity using solar panels.

Solar Thermal Electricity

A technology that uses sunlight to heat a fluid, which then drives a turbine to generate electricity.

Direct Radiation

Sunlight that reaches the Earth without being scattered by the atmosphere.

Geographic Latitude

A location's distance from the equator, influencing the amount of solar energy received.

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Time of Day

The time of day affects the amount of solar energy received, with more sunlight during midday.

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Diffuse Radiation

Sunlight that has been scattered by the atmosphere and clouds, reaching the Earth from various directions.

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Parabolic Trough Solar Thermal

A system that uses parabolic mirrors to concentrate sunlight onto a receiver tube, heating a fluid to generate electricity.

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Central Tower Solar Thermal

A system using many mirrors (heliostats) to reflect sunlight onto a central tower, heating a fluid to generate electricity.

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Linear Fresnel Solar Thermal

A system with many small, independent mirrors that focus sunlight onto a linear absorber, heating a fluid to generate electricity.

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Parabolic Dish Solar Thermal

A system using a single dish-shaped mirror to concentrate sunlight onto a receiver, heating a fluid to generate electricity.

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Solar Vector

The direction from which sunlight arrives at a location on Earth.

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SEGS in California

A large-scale solar thermal power plant using parabolic troughs, demonstrating their real-world application.

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Ivanpah Solar Power Facility

A large-scale central tower solar thermal power plant, showcasing its practical implementation.

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What is a heliostat?

A heliostat is a two-axis tracking mirror that concentrates solar radiation, keeping the reflected image at a fixed position throughout the day.

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What are the advantages of solar photovoltaics?

The advantages of solar photovoltaics include economies of scale due to large-scale module manufacturing and the ability to deploy small-scale installations.

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What is a major disadvantage of solar photovoltaics?

Solar photovoltaics generate power only when the sun is shining, limiting power output.

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How does biomass energy work?

Biomass energy is produced by burning organic materials like wood, bark, and agricultural waste to generate heat.

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What is a key example of biomass energy usage?

San Carlos Biopower Inc. in Negros Occidental uses agricultural waste like sugarcane trash and coconut husks to generate power.

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How does Denmark use biomass energy?

Denmark utilizes biomass, including agricultural waste and dedicated crops, for space heating in energy-independent islands like Samsø and Ærø.

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What is a flat plate solar collector used for?

Flat plate solar collectors are primarily used for heating water, commonly used for showers and swimming pools.

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How is heat generated in a biomass energy conversion process?

Biomass is burned in a boiler to produce steam, which then generates heat.

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Hydropower

Energy produced from the force of falling water, often harnessed by dams.

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Low-head Hydropower

A less destructive alternative to large dams, using smaller turbines to generate electricity from smaller water flows.

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Run-of-the-River Flow

Using the natural flow of a river without creating a dam, to generate electricity.

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Wind Energy

Energy generated by harnessing the kinetic energy of wind using turbines.

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Onshore Wind

Wind turbines located on land.

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Offshore Wind

Wind turbines located in the ocean.

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Sustainable Energy

Energy sources that can be replenished naturally, providing a long-term solution to our energy needs.

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Impact of Dams

Dams can have negative environmental and social effects, like disrupting river ecosystems and displacing communities.

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Energy Mix

The composition of energy sources used by a region, including fossil fuels, renewables, and nuclear power.

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Factors Influencing Energy Mix

The availability of resources, energy needs, and policy choices all influence the specific composition of an energy mix.

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Fossil Fuel Dominance

Fossil fuels currently account for over 80% of the global energy mix, highlighting their significant role in meeting energy demands.

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Renewable Energy (RE)

Energy sources that are naturally replenished, such as solar, wind, hydro, geothermal, and biomass.

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Non-Renewable Energy (NRE)

Energy sources that are finite and cannot be replenished at a human timescale, such as fossil fuels.

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Sustainable Energy Management

Balancing renewable and non-renewable energy sources to meet current energy demands while ensuring future generations have access to energy.

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Philippines Energy Mix

The Philippines heavily relies on coal for electricity generation.

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South Korea and Germany Energy Mix

Both South Korea and Germany utilize a diverse energy mix including nuclear power, renewable energy, and fossil fuels.

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Life Cycle Assessment (LCA)

A method used to evaluate the environmental impacts of products and services from their beginning (cradle) to their end (grave). It helps assess the environmental burden, including greenhouse gas emissions.

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Upstream Processes

The initial stages of a product's life cycle, including raw material extraction, component manufacturing, and construction. These often have a significant environmental footprint.

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Operational Processes

The stages of a product's life cycle where it is used or operated. This includes power generation, system operation, and maintenance activities.

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Downstream Processes

The final stages of a product's life cycle, encompassing decommissioning, waste disposal, and recycling activities.

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Carbon Dioxide Equivalents (CO2e)

A standardized unit used to measure the greenhouse gas emissions from different sources. It accounts for the global warming potential of various gases relative to carbon dioxide.

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Study Notes

Sustainable Energy Management

  • Renewable energy sources and their applications are discussed, along with considerations for energy management in countries like the Philippines.

Learning Outcomes

  • ILO 2: Identify environmental pollution effects and the engineer's role in material manipulation and resource management.
  • ILO 3: Select appropriate waste disposal design and safety measures, and explain their community and workplace impact.

Topic Outcomes: Renewable Energy

  • Renewable energy resources are described, analyzing their advantages and disadvantages.

Solar Energy

  • Solar energy converts sunlight into usable forms, including solar photovoltaics (PV) and solar thermal electricity.
  • Sunlight radiation arriving outside Earth has a specific spectral distribution that changes as it passes through the atmosphere.
  • The amount of solar energy varies based on geographic latitude, time of day, and year.
  • Solar radiation components include direct radiation, which reaches Earth without scattering, and can be concentrated.

Established Solar Technologies

  • Solar PV: Directly converts solar energy to electricity, absorbing 80% of incident radiation but only converting a portion. Excess heat is released during operation.
  • Solar Thermal: Solar energy is harnessed for various thermal applications like domestic use, industry, hotels, and hospitals. Use thermal energy for space heating and fluid, and generate electricity. It's been accepted globally for thermal power.

Different Solar Thermal Technologies

  • Parabolic trough systems use troughs to concentrate sunlight onto receiver tubes along the focal line. (e.g., SEGS, California)
  • Central tower systems use heliostats to reflect sunlight onto a high-temperature absorber on a central tower. (e.g., Ivanpah Power Facility, California)
  • Linear Fresnel systems use one-axis tracking, dividing the parabola into multiple mirrors.
  • Parabolic dish systems use heliostats focusing sunlight onto an engine with a cavity receiver.
  • Flat plate collectors are commonly used for heating water.

Solar Photovoltaics

  • Modules are manufactured in large plants to achieve economies of scale.
  • PV generates power only from sunlight; power output fluctuates based on sunlight availability.
  • Various solutions can address this fluctuation like flexible generation, grid infrastructure, and storage options.

Biomass Energy

  • Biomass uses wood, bark, branches, starchy roots, manure, and other plant/animal materials for energy production through burning.
  • Examples include sugarcane trash, coconut husks, and shells, woods, grasses, and other energy crops in the Philippines.

Biomass Energy Conversion Process

  • Biomass is burned in a boiler generating steam.
  • Steam drives a turbine connected to a generator that creates electricity.

Hydropower

  • Falling water is harnessed for energy generation through dams.
  • Dams may have environmental effects; for example drought, freshwater biodiversity issues, and impact to fishing industries and displacement of communities.
  • The Philippines uses hydroelectric plants like Maria Cristina and Agus VI for energy supply.

Wind

  • Wind energy captures kinetic energy from turbines to generate electricity, and can be onshore or offshore.
  • Past windmills were used for irrigation.
  • Examples include Pililla Wind Farm in Rizal, Philippines that supplies 54 MW to Meralco.

Sustainable Energy

  • Energy is a key driver of economies, and the source choice has global effects.
  • Renewable energy options are available but non-renewable sources (coal, oil, natural gas) are still needed due to global temperature considerations.
  • Denmark aims for 100% renewable energy by 2050, and some countries will take some time to adopt renewable energy options.

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Description

Test your knowledge on renewable energy sources and their applications, particularly in the context of the Philippines. Explore the environmental impact of energy management strategies and analyze the advantages and disadvantages of solar energy. This quiz covers essential learning outcomes related to waste management and pollution effects.

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