Solar power is a renewable energy source that can help address problems with fossil fuels like climate change. It provides energy access for areas without fossil fuels and can be implemented in many parts of the world. The amount of solar energy available depends on location, time of year, and time of day, as the sun's angle and position in the sky changes. By orienting solar panels towards the south at an angle equal to the latitude, and accounting for seasonal variations, the document explains how to calculate a location's solar energy potential.
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This PowerPoint explores how the sun's radiant energy affects the different layers of atmosphere. Specifically, it focuses on the effect solar energy has on Earths surface to create wind through the uneven heating of Earth's different surfaces (land vs. water)
Introduction to fuels, properties of fuel oil, coal and gas, storage, handling and preparation of fuels, principles of combustion, proximate and ultimate analysis, calorific values, gasification, composition of coal.
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Properties of steam, assessment of steam distribution losses, steam leakages, steam trapping, condensate and flash steam recovery system, identifying opportunities for energy savings.
Insulation and Refractories:
Insulation-types and application, economic thickness of insulation, heat savings and application criteria, Refractorytypes, selection and application of refractories, heat loss.
Waste Heat Recovery:
Classification, advantages and applications, commercially viable waste heat recovery devices, saving potential.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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2. Why do we need solar power?
Many areas of the world don’t have access to fossil fuels.
3. Problems with fossil fuels
Burning fossil fuels such as coal releases carbon
dioxide and other greenhouse gases.
These gases trap more of the sun’s heat in our
atmosphere, causing climate change.
5. Lack of natural resources
Some countries have used up all of their natural
resources.
Haiti allowed deforestation
to provide wood for heat
The Dominican
Republic did not
6. Potential dangers of deforestation
The loss of forests causes . . .
Erosion Mudslides
7. Solar energy around the world…
Solar Dish Kitchen
Solar energy can also cook food
Peruvian home with passive solar heating to heat
the home and water , using a Trombe wall and
solar water heater
Trombe wall
Solar water
heater
Solar Oven
8. Solar energy close to home…
Solar Water Heaters heat water for domestic use
Photovoltaic Panels – the National Renewable Energy Laboratory in
Golden, CO researches efficient electricity production from solar energy
Batch Heater Flat Plate Collector
Home Installation
9. About half of the incoming solar energy
reaches Earth
Solar energy is measured as power per unit area (Watt/m2)
~51% reaches Earth’s Surface
6% Reflected by atmosphere
20% Reflected by clouds
4% Reflected by
Earth’s surface
16% Absorbed by atmosphere
3% Absorbed by
clouds
10. The amount of solar energy changes with
location…
Latitude
Longitude
Temperature
(in Kelvins)
11. …and time
The location of the sun in the sky changes with the time o day
AND the time of year
South
East
West
North
June 21
December 21
12. How much solar energy do we have
access to?
First we need to know how to setup our flat plate solar module,
such as a solar water heater
The solar module should be oriented South at an angle from the
horizontal equal to the LATITUDE of solar collection (your location)
Find Location and determine Latitude
We will use
N
S E
W
40.1o Example: Latitude of Boulder,
Colorado is 40.1o so solar water
heater is 40.1o from the ground
facing South
13. How much solar energy do we have
access to?
We need to know:
Location: Latitude
Find this here:
http://www.esrl.noaa.gov/g
md/grad/solcalc/
Red
balloon
14. How much solar energy do we have
access to?
We need to know:
Location: Latitude
Time of year
Time collecting sun per day
15. How much solar energy do we have access to?
Solar Resources
16. How much solar energy do we have
access to?
Find your
month here
and open
the map
Solar Dish Kitchen image: Design for the Other 90% (http://archive.cooperhewitt.org/other90/other90.cooperhewitt.org/Design/solar-dish-kitchen.html)
Peruvian home photo: Odessa Gomez 2010
Solar oven: http://solarcooking.wikia.com/wiki/Category:Solar_cooker_plans
Batch water heater and home installation images:
http://www.nrel.gov/docs/legosti/fy96/17459.pdf
Flat plate solar water heater: http://www.energystar.gov/index.cfm?fuseaction=find_a_product.showProductGroup&pgw_code=WSE
PV image: http://www.nrel.gov/pv/