Solar energy is radiant light and heat from the sun that is harnessed using technologies like solar heating, photovoltaics, and solar thermal energy. It is categorized as either passive solar techniques that don't require equipment or active solar techniques like solar panels and concentrated solar power. The potential for solar energy depends on factors like geography, time of day, cloud cover, and available land area. Examples of large solar energy projects highlighted include a planned sustainable education building in the Netherlands with a large solar roof, NREL's zero energy research facility in Colorado with transpired solar collectors, and Welspun's 150 MW solar power plant in India, one of the largest in Asia.
2. WHAT IS SOLAR ENERGY?
• 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.
3. • Active solar techniques include the use of
photovoltaic systems, concentrated solar
power and solar water heating to harness the
energy.
• Passive solar techniques include orienting a
building to the Sun, selecting materials with
favourable thermal mass or light-dispersing
properties, and designing spaces that
naturally circulate air.
4. POTENTIAL
• The potential solar energy that could be used by humans differs from the
amount of solar energy present near the surface of the planet because
factors such as geography, time variation, cloud cover, and the land
available to humans limit the amount of solar energy that we can acquire.
• Geography affects solar energy potential because areas that are closer to
the equator have a greater amount of solar radiation. However, the use of
photovoltaics that can follow the position of the sun can significantly
increase the solar energy potential in areas that are farther from the
equator.
• Time variation effects the potential of solar energy because during the
nighttime there is little solar radiation on the surface of the Earth for solar
panels to absorb. This limits the amount of energy that solar panels can
absorb in one day.
5.
6. POTENTIAL
• Cloud cover can affect the potential of solar panels because clouds block
incoming light from the sun and reduce the light available for solar cells.
• In addition, land availability has a large effect on the available solar energy
because solar panels can only be set up on land that is otherwise unused
and suitable for solar panels. Roofs have been found to be a suitable place
for solar cells, as many people have discovered that they can collect energy
directly from their homes this way. Other areas that are suitable for solar cells
are lands that are not being used for businesses where solar plants can be
established.
7. SOLAR WATER HEATING
• Solar hot water systems use sunlight to heat water. In low geographical latitudes
(below 40 degrees) from 60 to 70% of the domestic hot water use with temperatures
up to 60 °C can be provided by solar heating systems. The most common types of
solar water heaters are evacuated tube collectors (44%) and glazed flat plate
collectors (34%) generally used for domestic hot water; and unglazed plastic
collectors (21%) used mainly to heat swimming pools.
• As of 2007, the total installed capacity of solar hot water systems was approximately
154 thermal gigawatt (GWth). China is the world leader in their deployment with 70
GWth installed as of 2006 and a long-term goal of 210 GWth by 2020. Israel and
Cyprus are the per capita leaders in the use of solar hot water systems with over 90%
of homes using them. In the United States, Canada, and Australia, heating swimming
pools is the dominant application of solar hot water with an installed capacity of 18
GWth as of 2005.
10. The new, ambitious building for the Energy Academy
Europe promises to become the most sustainable
education building of the Netherlands. It is a new top
institute in which industry, education and academia are
joining forces to work together on research and innovation
in the field of energy. To achieve the extremely sustainable
energy principles, the building has been given a particular
design with a large solar roof. The construction of almost
15.000 m2with BREEAM-rating ‘Outstanding’ will be
realized in 2015-2016 on the Zernike
Energy Academy Europe
https://www.youtube.com/watch?v=g1YcZ1J4oIc
Video to watch
12. NREL
• The National Renewable
Energy Laboratory (NREL),
located in Golden,
Colorado, specializes
in renewable
energy and energy
efficiency research and
development
• It is a zero energy building
with a Platinum LEED rating
• Occupancy type:
office , research facility
16. • This is a solar power plant.
• The solar energy is trapped from the solar
panels on a whole large field.
• Located in Neemuch, Madhya Pradesh.
• It is currently the largest solar power plant
in Asia fully functioning and delivering.
• It is spread across 800 acres of barren
and uncultivated land.
• Produces a net power of 150MW.
• Total cost of this power plant is 180 million
USD.
17. • A power of 150 MW is produced in the
plant.
• Avg energy produced in an year is
1.37*10*12KJ.
• That is almost equivalent to 3.38*10*8KWH.
• It is assumed that the plant is functioning
for 7 hours on daily basis, throughout the
year.
https://www.youtube.com/watch?v=84UiGnQZE0c
Video to watch
18. How to achieve a net zero building ?
• Site selection and orientation of the building.
• Passive solar design.
• Building envelope design : selecting walls, roofs, fenestrations based
on long term insulation, air barrier performance, and durability.
• Water reservoirs within the building.
• Thermal IMSS
• Tight building envelope
• Balanced insulation
• Balanced ventilation
• Heating and cooling equipment
• Hot water for domestic purpose
• Efficient lighting
• Source of alternative energy
https://www.youtube.com/watch?v=pQFJr5E7_R0
Video to watch
