Solar energy originates from thermonuclear fusion reactions in the sun. It represents the entire electromagnetic spectrum reaching Earth. While solar energy is abundant and pollution-free, it is also intermittent and diffuse. Various technologies have been developed to harness solar energy for heating water and living spaces as well as generating electricity. These technologies include passive and active solar water heating, solar thermal power towers and dishes, and photovoltaic cells that directly convert sunlight to electricity. Further advances aim to improve efficiency and reduce costs to make greater use of solar energy.
The document discusses various methods for harnessing solar energy, including passive solar heating of buildings, active solar water heating systems, solar power towers, parabolic dishes and troughs, and photovoltaic cells. It notes that while solar energy technologies are improving in efficiency and lowering in cost, they remain more expensive than fossil fuel-based energy production. However, solar power represents a renewable and pollution-free alternative to reducing dependence on coal and nuclear energy.
The document discusses various methods for harnessing solar energy, including passive and active solar heating systems for water and living spaces, as well as solar thermal and photovoltaic electricity generation. It describes technologies like power towers, parabolic dishes and troughs, and solar panels. While solar energy has benefits like being renewable and pollution-free, its intermittent nature and higher costs compared to fossil fuels have posed challenges to widespread adoption.
Solar energy -the ultimate renewable resourcerahuldawar
Solar energy originates from the sun's thermonuclear fusion reactions. It represents the entire electromagnetic spectrum that reaches Earth, including visible light, infrared, ultraviolet, x-rays, and radio waves. Solar energy has the advantages of being pollution-free and sustainable, but it is also diffuse and inconsistent, requiring technologies to concentrate and store it. Common solar technologies include heating water and buildings, generating electricity via solar panels, power towers, and parabolic dishes/troughs. While solar is currently more expensive than fossil fuels, its costs are decreasing as technologies advance.
L1 Solar Energy--The Ultimate Renewable Resource.pptnehasolanki83
Solar energy originates from the sun and represents the entire electromagnetic spectrum that reaches Earth. It has the advantages of being pollution-free and sustainable, with the energy from 30 days of sunshine having the equivalent energy of all fossil fuels used and unused on Earth. Challenges include its diffuse and intermittent nature. Various technologies have been developed to collect, convert, and store solar energy for heating water and living spaces as well as generating electricity through photovoltaics and concentrating solar power towers and dishes. While solar technologies are improving, their higher initial costs compared to fossil fuels have limited widespread adoption.
Solar energy is radiant light and heat from the Sun harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis.
solar energy--the ultimate renewable resourceGhassan Hadi
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. While solar energy has the advantages of being pollution-free and sustainable, its disadvantages include inconsistent sunshine and its diffuse nature, requiring concentration. Several methods are discussed for harnessing solar energy, including using flat plate collectors to heat water passively or with pumps in an active system. Solar energy can also be used to directly heat buildings through designs incorporating insulation, collection, and thermal mass storage. Additional methods discussed are using power towers or parabolic dishes/troughs to generate solar-thermal electricity, as well as using photovoltaic cells for direct conversion to electricity, though their efficiency and costs remain
Solar energy : The Ultimate Renewable ResourceRounak Kapoor
This is presentation on Solar Energy.
It contains->
> Whst is solar energy?
> Its advantages and disadvantages.
> Its Applications.
> Power Towers.
> Solar Panels.
This Presentation is very usefull for Engineering Students.
The document discusses various methods for harnessing solar energy, including passive solar heating of buildings, active solar water heating systems, solar power towers, parabolic dishes and troughs, and photovoltaic cells. It notes that while solar energy technologies are improving in efficiency and lowering in cost, they remain more expensive than fossil fuel-based energy production. However, solar power represents a renewable and pollution-free alternative to reducing dependence on coal and nuclear energy.
The document discusses various methods for harnessing solar energy, including passive and active solar heating systems for water and living spaces, as well as solar thermal and photovoltaic electricity generation. It describes technologies like power towers, parabolic dishes and troughs, and solar panels. While solar energy has benefits like being renewable and pollution-free, its intermittent nature and higher costs compared to fossil fuels have posed challenges to widespread adoption.
Solar energy -the ultimate renewable resourcerahuldawar
Solar energy originates from the sun's thermonuclear fusion reactions. It represents the entire electromagnetic spectrum that reaches Earth, including visible light, infrared, ultraviolet, x-rays, and radio waves. Solar energy has the advantages of being pollution-free and sustainable, but it is also diffuse and inconsistent, requiring technologies to concentrate and store it. Common solar technologies include heating water and buildings, generating electricity via solar panels, power towers, and parabolic dishes/troughs. While solar is currently more expensive than fossil fuels, its costs are decreasing as technologies advance.
L1 Solar Energy--The Ultimate Renewable Resource.pptnehasolanki83
Solar energy originates from the sun and represents the entire electromagnetic spectrum that reaches Earth. It has the advantages of being pollution-free and sustainable, with the energy from 30 days of sunshine having the equivalent energy of all fossil fuels used and unused on Earth. Challenges include its diffuse and intermittent nature. Various technologies have been developed to collect, convert, and store solar energy for heating water and living spaces as well as generating electricity through photovoltaics and concentrating solar power towers and dishes. While solar technologies are improving, their higher initial costs compared to fossil fuels have limited widespread adoption.
Solar energy is radiant light and heat from the Sun harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis.
solar energy--the ultimate renewable resourceGhassan Hadi
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. While solar energy has the advantages of being pollution-free and sustainable, its disadvantages include inconsistent sunshine and its diffuse nature, requiring concentration. Several methods are discussed for harnessing solar energy, including using flat plate collectors to heat water passively or with pumps in an active system. Solar energy can also be used to directly heat buildings through designs incorporating insulation, collection, and thermal mass storage. Additional methods discussed are using power towers or parabolic dishes/troughs to generate solar-thermal electricity, as well as using photovoltaic cells for direct conversion to electricity, though their efficiency and costs remain
Solar energy : The Ultimate Renewable ResourceRounak Kapoor
This is presentation on Solar Energy.
It contains->
> Whst is solar energy?
> Its advantages and disadvantages.
> Its Applications.
> Power Towers.
> Solar Panels.
This Presentation is very usefull for Engineering Students.
This document discusses various methods of harnessing solar energy, including power towers, parabolic dishes and troughs, photovoltaic cells, and passive solar heating. Power towers use an array of mirrors to reflect sunlight to a central receiver tower to achieve high temperatures for generating electricity. Parabolic dishes and troughs focus sunlight onto receivers to heat liquid and drive steam turbines. Photovoltaic cells directly convert sunlight to electricity through silicon photovoltaic effect. Passive solar designs utilize thermal mass and south-facing windows to naturally heat buildings. The document analyzes advantages and challenges of different solar technologies.
This document summarizes information about solar energy. It discusses what solar energy is, how much the Earth receives, and major uses like daylight, drying crops, space heating, water heating, and generating electricity. It describes passive and active systems for using solar energy to heat water and living spaces. Larger scale applications like power towers and parabolic dishes that generate solar-thermal electricity are also outlined. The advantages of solar energy being renewable and clean are highlighted, along with some disadvantages like high costs and lack of power at night.
This document provides an overview of solar energy, including its various uses and applications. It discusses how solar energy works, how much the Earth receives, and major current uses like heating water, spaces, and generating electricity. Both passive and active solar heating systems are examined. Advantages of solar like being renewable and clean are outlined, as well as challenges like high initial costs and limited generation at night. The document concludes that further cost reductions from more production and research could significantly increase the viability and use of solar energy.
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches the Earth. Some key advantages of solar energy are that it produces no pollutants, and the energy reaching the Earth each day is greater than all the fossil fuels on the planet. However, solar energy is intermittent and diffuse, requiring technologies to concentrate and store it. Various technologies can harness solar energy for heating water and living spaces, as well as generating electricity through solar thermal power towers and dishes/troughs that focus sunlight. Overall, solar energy represents an enormous renewable resource that can significantly reduce dependence on fossil fuels.
The document discusses solar energy, including its origins from the sun, applications in generating electricity, and various manufacturing methods like photovoltaic cells, solar heating, and solar power towers. It covers the advantages of being renewable and occupying less space than alternatives while also addressing the disadvantages of higher initial costs and the intermittent nature of the solar resource.
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis. It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power.
what is solar energy definition
10 advantages of solar energy
what is solar energy kids
what is solar energy system
what is solar power definition
facts about solar energy
use of solar energy
solar energy information
interesting civil engineering topics
seminar topics pdf
civil engineering topics for presentation
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Solar power plants harness energy from the sun and convert it to electricity through one of two processes: photovoltaic cells that directly convert sunlight to electricity, or solar-thermal systems that use mirrors to heat a liquid and create steam to power turbines. The Philippines has good solar resources, especially in the sunbelt between 20 degrees north and south of the equator. While initial costs of solar power plants can be high, maintenance costs are low and they produce no air or water pollution or greenhouse gases during operation. Some impacts include resource use and pollution during manufacturing and potential effects on local ecosystems.
This document discusses renewable and non-renewable energy sources. The main renewable energy sources mentioned are solar, wind, tidal, geothermal, wave, and ocean thermal energy. Non-renewable sources listed are coal, petroleum, natural gas, and nuclear fuel. The need for renewable resources is discussed due to the increasing demand for fossil fuels and their harmful emissions. Advantages of renewable sources include being environmentally friendly and widely available, while disadvantages include containing energy in a diluted form and requiring expensive collection methods. Solar energy and different solar technologies like photovoltaic cells and solar thermal collectors are explained in detail.
Solar energy originates from the thermonuclear fusion reactions occurring in the sun. It represents the entire electromagnetic radiation that reaches Earth. The advantages of solar energy are that it produces no polluting byproducts, and the energy reaching Earth in 30 days equals all fossil fuels on the planet. Challenges include its diffuse nature and inconsistent availability. Solar energy can be used to heat water and living spaces through passive and active collection and storage systems. It can also be converted to electricity through solar thermal power towers, dishes, troughs, and photovoltaic cells, though the latter have lower efficiency and higher costs than traditional power sources.
The document discusses various renewable energy resources including solar energy, wind energy, hydroelectric power, tidal energy, ocean thermal energy, geothermal energy, and their advantages. Solar energy is a clean, renewable source of energy harnessed through solar cells and collectors. It has the disadvantage of not shining consistently. Wind energy produces no emissions and takes advantage of the natural wind resource through turbines. Hydroelectric power harnesses the kinetic energy of moving water. Tidal energy uses ocean tides while ocean thermal energy exploits temperature differences in ocean water. Geothermal energy taps into the Earth's natural heat.
This document provides a summary of various sustainable energy sources and technologies, organized into the following sections: conservation, green buildings, transportation, cogeneration, solar energy (passive, active, photovoltaics), fuel cells, biomass energy, energy from earth's forces (hydropower, wind, geothermal, tidal, wave), and energy storage methods. Specific technologies discussed include compact fluorescent lights, electric vehicles, solar thermal plants, photovoltaic cells, fuel cells, biodiesel, ethanol, algae as a biofuel, wind turbines, hydroelectric dams, and ocean thermal energy conversion.
This document summarizes information about solar energy, including its origins from thermonuclear fusion in the sun and advantages such as producing no polluting byproducts. It discusses various methods for harnessing solar energy, such as using flat plate collectors to heat water through passive or active systems. Larger-scale methods to generate electricity are also covered, including power towers that use many mirrors to direct sunlight to a central tower, and parabolic dishes/troughs that focus sunlight to heat a liquid and drive steam turbines. Photovoltaic cells that directly convert sunlight to electricity are also mentioned.
Solar energy can be harnessed using various technologies to generate electricity or provide thermal energy. Photovoltaic solar cells directly convert sunlight into electricity, while solar thermal systems use sunlight to heat water or other fluids for applications such as water heating and cooking. Both approaches help reduce reliance on fossil fuels and produce no harmful emissions. Large solar farms and solar installations on commercial buildings demonstrate the growing adoption of solar energy around the world.
Solar energy is radiant light and heat from the Sun harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. Solar energy has the advantage of producing no pollutants, as 30 days of sunshine provides more energy than all fossil fuels on Earth. However, solar energy is diffuse and intermittent, requiring concentration and storage to be useful. Various technologies have been developed to collect, convert, and store solar energy for heating water and buildings, or generating electricity through solar thermal power towers, parabolic dishes, and photovoltaic cells.
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. Solar energy has the advantage of being pollution-free and sustainable, as the sun provides incredible amounts of energy to Earth each day equivalent to all fossil fuels. However, solar energy is diffuse and intermittent, requiring technologies to concentrate and store it. Various technologies exist to harness solar energy for heating water and living spaces or generating electricity through solar thermal or photovoltaic means, but they remain more expensive than fossil fuel alternatives.
ppt on the Solar Energy Renewable ResourceYuvraj Singh
Solar energy originates from the sun's thermonuclear fusion reactions. It represents the entire electromagnetic spectrum that reaches Earth, including visible light, infrared, ultraviolet, x-rays, and radio waves. Solar energy technologies can be used to directly heat water or living spaces, or to generate electricity. While solar energy is abundant and renewable, it is also diffuse and intermittent, requiring technologies to concentrate and store it. As the technologies improve and costs decline, solar power shows promise as a sustainable alternative to fossil fuels.
Solar energy is obtained from the sun's radiation and can be converted into useful forms of active or passive energy. Active solar energy uses equipment like solar cells to convert sunlight into electrical energy for homes, while passive solar energy uses strategic window placement for natural sunlight heating. Solar panels convert light energy to electrical current through silicon or thin-film crystals, with individual electrons becoming excited and moving freely to produce current. While solar energy has advantages like being renewable, clean and requiring little maintenance, disadvantages include high upfront costs and reliance on sunlight availability. Overall solar provides a sustainable and pollution-free alternative to non-renewable fossil fuels and carries risks of nuclear energy.
The document discusses various methods for harnessing solar energy, including solar thermal technologies for water heating and cooking, as well as photovoltaic (PV) systems for generating electricity. It describes how PV systems work using solar cells made of silicon to convert sunlight directly into electricity. The document also discusses different types of large-scale solar power plants that use concentrating solar technologies like parabolic troughs and power towers to generate utility-scale electricity.
Very, VERY dry material, I'm afraid. We were asked to teach a chapter of the text book. I did this presentation, and found it difficult even using PowerPoint to keep in interesting and streamlined enough to keep people awake. But the pictures are pretty, and I made the design template myself using modified clipart. :o)
This document discusses various methods of harnessing solar energy, including power towers, parabolic dishes and troughs, photovoltaic cells, and passive solar heating. Power towers use an array of mirrors to reflect sunlight to a central receiver tower to achieve high temperatures for generating electricity. Parabolic dishes and troughs focus sunlight onto receivers to heat liquid and drive steam turbines. Photovoltaic cells directly convert sunlight to electricity through silicon photovoltaic effect. Passive solar designs utilize thermal mass and south-facing windows to naturally heat buildings. The document analyzes advantages and challenges of different solar technologies.
This document summarizes information about solar energy. It discusses what solar energy is, how much the Earth receives, and major uses like daylight, drying crops, space heating, water heating, and generating electricity. It describes passive and active systems for using solar energy to heat water and living spaces. Larger scale applications like power towers and parabolic dishes that generate solar-thermal electricity are also outlined. The advantages of solar energy being renewable and clean are highlighted, along with some disadvantages like high costs and lack of power at night.
This document provides an overview of solar energy, including its various uses and applications. It discusses how solar energy works, how much the Earth receives, and major current uses like heating water, spaces, and generating electricity. Both passive and active solar heating systems are examined. Advantages of solar like being renewable and clean are outlined, as well as challenges like high initial costs and limited generation at night. The document concludes that further cost reductions from more production and research could significantly increase the viability and use of solar energy.
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches the Earth. Some key advantages of solar energy are that it produces no pollutants, and the energy reaching the Earth each day is greater than all the fossil fuels on the planet. However, solar energy is intermittent and diffuse, requiring technologies to concentrate and store it. Various technologies can harness solar energy for heating water and living spaces, as well as generating electricity through solar thermal power towers and dishes/troughs that focus sunlight. Overall, solar energy represents an enormous renewable resource that can significantly reduce dependence on fossil fuels.
The document discusses solar energy, including its origins from the sun, applications in generating electricity, and various manufacturing methods like photovoltaic cells, solar heating, and solar power towers. It covers the advantages of being renewable and occupying less space than alternatives while also addressing the disadvantages of higher initial costs and the intermittent nature of the solar resource.
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis. It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power.
what is solar energy definition
10 advantages of solar energy
what is solar energy kids
what is solar energy system
what is solar power definition
facts about solar energy
use of solar energy
solar energy information
interesting civil engineering topics
seminar topics pdf
civil engineering topics for presentation
civil seminar topics ppt
best seminar topics for civil engineering
seminar topics for mechanical engineers
civil engineering ppt
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Solar power plants harness energy from the sun and convert it to electricity through one of two processes: photovoltaic cells that directly convert sunlight to electricity, or solar-thermal systems that use mirrors to heat a liquid and create steam to power turbines. The Philippines has good solar resources, especially in the sunbelt between 20 degrees north and south of the equator. While initial costs of solar power plants can be high, maintenance costs are low and they produce no air or water pollution or greenhouse gases during operation. Some impacts include resource use and pollution during manufacturing and potential effects on local ecosystems.
This document discusses renewable and non-renewable energy sources. The main renewable energy sources mentioned are solar, wind, tidal, geothermal, wave, and ocean thermal energy. Non-renewable sources listed are coal, petroleum, natural gas, and nuclear fuel. The need for renewable resources is discussed due to the increasing demand for fossil fuels and their harmful emissions. Advantages of renewable sources include being environmentally friendly and widely available, while disadvantages include containing energy in a diluted form and requiring expensive collection methods. Solar energy and different solar technologies like photovoltaic cells and solar thermal collectors are explained in detail.
Solar energy originates from the thermonuclear fusion reactions occurring in the sun. It represents the entire electromagnetic radiation that reaches Earth. The advantages of solar energy are that it produces no polluting byproducts, and the energy reaching Earth in 30 days equals all fossil fuels on the planet. Challenges include its diffuse nature and inconsistent availability. Solar energy can be used to heat water and living spaces through passive and active collection and storage systems. It can also be converted to electricity through solar thermal power towers, dishes, troughs, and photovoltaic cells, though the latter have lower efficiency and higher costs than traditional power sources.
The document discusses various renewable energy resources including solar energy, wind energy, hydroelectric power, tidal energy, ocean thermal energy, geothermal energy, and their advantages. Solar energy is a clean, renewable source of energy harnessed through solar cells and collectors. It has the disadvantage of not shining consistently. Wind energy produces no emissions and takes advantage of the natural wind resource through turbines. Hydroelectric power harnesses the kinetic energy of moving water. Tidal energy uses ocean tides while ocean thermal energy exploits temperature differences in ocean water. Geothermal energy taps into the Earth's natural heat.
This document provides a summary of various sustainable energy sources and technologies, organized into the following sections: conservation, green buildings, transportation, cogeneration, solar energy (passive, active, photovoltaics), fuel cells, biomass energy, energy from earth's forces (hydropower, wind, geothermal, tidal, wave), and energy storage methods. Specific technologies discussed include compact fluorescent lights, electric vehicles, solar thermal plants, photovoltaic cells, fuel cells, biodiesel, ethanol, algae as a biofuel, wind turbines, hydroelectric dams, and ocean thermal energy conversion.
This document summarizes information about solar energy, including its origins from thermonuclear fusion in the sun and advantages such as producing no polluting byproducts. It discusses various methods for harnessing solar energy, such as using flat plate collectors to heat water through passive or active systems. Larger-scale methods to generate electricity are also covered, including power towers that use many mirrors to direct sunlight to a central tower, and parabolic dishes/troughs that focus sunlight to heat a liquid and drive steam turbines. Photovoltaic cells that directly convert sunlight to electricity are also mentioned.
Solar energy can be harnessed using various technologies to generate electricity or provide thermal energy. Photovoltaic solar cells directly convert sunlight into electricity, while solar thermal systems use sunlight to heat water or other fluids for applications such as water heating and cooking. Both approaches help reduce reliance on fossil fuels and produce no harmful emissions. Large solar farms and solar installations on commercial buildings demonstrate the growing adoption of solar energy around the world.
Solar energy is radiant light and heat from the Sun harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. Solar energy has the advantage of producing no pollutants, as 30 days of sunshine provides more energy than all fossil fuels on Earth. However, solar energy is diffuse and intermittent, requiring concentration and storage to be useful. Various technologies have been developed to collect, convert, and store solar energy for heating water and buildings, or generating electricity through solar thermal power towers, parabolic dishes, and photovoltaic cells.
Solar energy originates from the thermonuclear fusion reactions of the sun. It represents the entire electromagnetic spectrum that reaches Earth. Solar energy has the advantage of being pollution-free and sustainable, as the sun provides incredible amounts of energy to Earth each day equivalent to all fossil fuels. However, solar energy is diffuse and intermittent, requiring technologies to concentrate and store it. Various technologies exist to harness solar energy for heating water and living spaces or generating electricity through solar thermal or photovoltaic means, but they remain more expensive than fossil fuel alternatives.
ppt on the Solar Energy Renewable ResourceYuvraj Singh
Solar energy originates from the sun's thermonuclear fusion reactions. It represents the entire electromagnetic spectrum that reaches Earth, including visible light, infrared, ultraviolet, x-rays, and radio waves. Solar energy technologies can be used to directly heat water or living spaces, or to generate electricity. While solar energy is abundant and renewable, it is also diffuse and intermittent, requiring technologies to concentrate and store it. As the technologies improve and costs decline, solar power shows promise as a sustainable alternative to fossil fuels.
Solar energy is obtained from the sun's radiation and can be converted into useful forms of active or passive energy. Active solar energy uses equipment like solar cells to convert sunlight into electrical energy for homes, while passive solar energy uses strategic window placement for natural sunlight heating. Solar panels convert light energy to electrical current through silicon or thin-film crystals, with individual electrons becoming excited and moving freely to produce current. While solar energy has advantages like being renewable, clean and requiring little maintenance, disadvantages include high upfront costs and reliance on sunlight availability. Overall solar provides a sustainable and pollution-free alternative to non-renewable fossil fuels and carries risks of nuclear energy.
The document discusses various methods for harnessing solar energy, including solar thermal technologies for water heating and cooking, as well as photovoltaic (PV) systems for generating electricity. It describes how PV systems work using solar cells made of silicon to convert sunlight directly into electricity. The document also discusses different types of large-scale solar power plants that use concentrating solar technologies like parabolic troughs and power towers to generate utility-scale electricity.
Very, VERY dry material, I'm afraid. We were asked to teach a chapter of the text book. I did this presentation, and found it difficult even using PowerPoint to keep in interesting and streamlined enough to keep people awake. But the pictures are pretty, and I made the design template myself using modified clipart. :o)
Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) CurriculumMJDuyan
(𝐓𝐋𝐄 𝟏𝟎𝟎) (𝐋𝐞𝐬𝐬𝐨𝐧 𝟏)-𝐏𝐫𝐞𝐥𝐢𝐦𝐬
𝐃𝐢𝐬𝐜𝐮𝐬𝐬 𝐭𝐡𝐞 𝐄𝐏𝐏 𝐂𝐮𝐫𝐫𝐢𝐜𝐮𝐥𝐮𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐏𝐡𝐢𝐥𝐢𝐩𝐩𝐢𝐧𝐞𝐬:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
-Define entrepreneurship, distinguishing it from general business activities by emphasizing its focus on innovation, risk-taking, and value creation. Students will describe the characteristics and traits of successful entrepreneurs, including their roles and responsibilities, and discuss the broader economic and social impacts of entrepreneurial activities on both local and global scales.
The chapter Lifelines of National Economy in Class 10 Geography focuses on the various modes of transportation and communication that play a vital role in the economic development of a country. These lifelines are crucial for the movement of goods, services, and people, thereby connecting different regions and promoting economic activities.
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
This presentation was provided by Racquel Jemison, Ph.D., Christina MacLaughlin, Ph.D., and Paulomi Majumder. Ph.D., all of the American Chemical Society, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
2. What is Solar Energy?
Originates with the
thermonuclear fusion
reactions occurring in
the sun.
Represents the entire
electromagnetic
radiation (visible light,
infrared, ultraviolet, x-
rays, and radio waves).
3. Advantages and Disadvantages
Advantages
All chemical and radioactive polluting byproducts of
the thermonuclear reactions remain behind on the
sun, while only pure radiant energy reaches the
Earth.
Energy reaching the earth is incredible. By one
calculation, 30 days of sunshine striking the Earth
have the energy equivalent of the total of all the
planet’s fossil fuels, both used and unused!
Disadvantages
Sun does not shine consistently.
Solar energy is a diffuse source. To harness it, we
must concentrate it into an amount and form that we
can use, such as heat and electricity.
Addressed by approaching the problem through:
1) collection, 2) conversion, 3) storage.
4. How much solar energy?
The surface receives about 47% of the total solar
energy that reaches the Earth. Only this amount
is usable.
5. Putting Solar Energy to Use:
Heating Water
Two methods of heating water:
passive (no moving parts) and
active (pumps).
In both, a flat-plate collector is
used to absorb the sun’s energy
to heat the water.
The water circulates throughout
the closed system due to
convection currents.
Tanks of hot water are used as
storage.
6. Heating Water: Active System
Active System uses antifreeze so that the liquid does not
freeze if outside temp. drops below freezing.
7. Heating Water—Last Thoughts
Efficiency of solar heating system is always less than 100%
because:
% transmitted depends on angle of incidence,
Number of glass sheets (single glass sheet
transmits 90-95%), and
Composition of the glass
Solar water heating saves approx. 1000 megawatts of energy a yr,
equivalent to eliminating the emissions from two medium sized
coal burning power plants.
By using solar water heating over gas water heater, a family will
save 1200 pounds of pollution each year.
Market for flat plate collectors grew in 1980s because of
increasing fossil fuels prices and federal tax credits. But by 1985,
when these credits were removed and fossil fuel prices were low,
the demand for flat plate collectors shrunk quickly.
While solar water heating is relatively low in the US, in other
parts of the world such as Cyprus (90%) and Israel (65%), it
proves to be the predominate form of water heating.
8. Heating Living Spaces
Best design of a building is for it to act as a solar
collector and storage unit. This is achieved through
three elements: insulation, collection, and storage.
Efficient heating starts with proper insulation on external
walls, roof, and the floors. The doors, windows, and
vents must be designed to minimize heat loss.
Collection: south-facing windows and appropriate
landscaping.
Storage: Thermal mass—holds heat.
Water= 62 BTU per cubic foot per degree F.
Iron=54, Wood (oak) =29, Brick=25, concrete=22,
and loose stone=20
10. Heating Living Spaces
A passively heated home uses about 60-75% of the
solar energy that hits its walls and windows.
The Center for Renewable Resources estimates
that in almost any climate, a well-designed passive
solar home can reduce energy bills by 75% with an
added construction cost of only 5-10%.
About 25% of energy is used for water and space
heating.
Major factor discouraging solar heating is low
energy prices.
11. Solar-Thermal Electricity:
Power Towers
General idea is to collect the light from many reflectors
spread over a large area at one central point to achieve high
temperature.
Example is the 10-MW solar power plant in Barstow, CA.
1900 heliostats, each 20 ft by 20 ft
a central 295 ft tower
An energy storage system allows it to generate 7 MW of
electric power without sunlight.
Capital cost is greater than coal fired power plant, despite
the no cost for fuel, ash disposal, and stack emissions.
Capital costs are expected to decline as more and more
power towers are built with greater technological advances.
One way to reduce cost is to use the waste steam from the
turbine for space heating or other industrial processes.
13. Solar-Thermal Electricity:
Parabolic Dishes and Troughs
Focus sunlight on a smaller receiver for each device; the
heated liquid drives a steam engine to generate electricity.
The first of these Solar Electric Generating Stations (SEGS)
was installed in CA by an Israeli company, Luz
International.
Output was 13.8 MW; cost was $6,000/peak kW and overall
efficiency was 25%.
Through federal and state tax credits, Luz was able to build
more SEGS, and improved reduced costs to $3,000/peak
kW and the cost of electricity from 25 cents to 8 cents per
kWh, barely more than the cost of nuclear or coal-fired
facilities.
The more recent facilities converted a remarkable 22% of
sunlight into electricity.
14. Parabolic Dishes and Troughs
Because they work best under direct sunlight, parabolic
dishes and troughs must be steered throughout the day in
the direction of the sun.
Collectors in southern CA.
15. Direct Conversion into Electricity
Photovoltaic cells are capable of
directly converting sunlight into
electricity.
A simple wafer of silicon with
wires attached to the layers.
Current is produced based on
types of silicon (n- and p-types)
used for the layers. Each
cell=0.5 volts.
Battery needed as storage
No moving partsdo no wear
out, but because they are
exposed to the weather, their
lifespan is about 20 years.
16. Solar Panels in Use
Because of their current costs, only
rural and other customers far away
from power lines use solar panels
because it is more cost effective
than extending power lines.
Note that utility companies are
already purchasing, installing, and
maintaining PV-home systems
(Idaho Power Co.).
Largest solar plant in US,
sponsored by the DOE, served the
Sacramento area, producing 2195
MWh of electric energy, making it
cost competitive with fossil fuel
plants.
17. Efficiency and Disadvantages
Efficiency is far lass than the
77% of solar spectrum with
usable wavelengths.
43% of photon energy is used
to warm the crystal.
Efficiency drops as
temperature increases (from
24% at 0°C to 14% at 100°C.)
Light is reflected off the front
face and internal electrical
resistance are other factors.
Overall, the efficiency is
about 10-14%.
Cost of electricity from coal-
burning plants is anywhere b/w
8-20 cents/kWh, while
photovoltaic power generation is
anywhere b/w $0.50-1/kWh.
Does not reflect the true costs of
burning coal and its emissions
to the nonpolluting method of
the latter.
Underlying problem is weighing
efficiency against cost.
Crystalline silicon-more
efficient, more expensive to
manufacture
Amorphous silicon-half as
efficient, less expensive to
produce.
18. Final Thought
Argument that sun provides power only during the day
is countered by the fact that 70% of energy demand is
during daytime hours. At night, traditional methods
can be used to generate the electricity.
Goal is to decrease our dependence on fossil fuels.
Currently, 75% of our electrical power is generated by
coal-burning and nuclear power plants.
Mitigates the effects of acid rain, carbon dioxide, and
other impacts of burning coal and counters risks
associated with nuclear energy.
pollution free, indefinitely sustainable.