1) The document is a student assignment on wind energy submitted by Shrutidhar to their professor Er. Jaya Sinha.
2) It discusses the origins and mechanics of wind energy, explaining how wind turbines convert kinetic wind energy into electrical energy.
3) India has strong wind energy potential estimated at 302 GW, but has only realized about 25% of this potential so far, indicating significant room for growth in wind power in India.
Geothermal energy is one of the potential alternative energy sources catering to both
industrial and domestic energy requirements in many parts of the world. Presently, it is
being used as a source for producing electricity mainly along active plate boundaries.
This is just for knowledge, because given data in this is 2008. now some government policies has been changed so its cost maybe or maybe less as compared to this data.
Geothermal energy is one of the potential alternative energy sources catering to both
industrial and domestic energy requirements in many parts of the world. Presently, it is
being used as a source for producing electricity mainly along active plate boundaries.
This is just for knowledge, because given data in this is 2008. now some government policies has been changed so its cost maybe or maybe less as compared to this data.
Energy generated by using wind, tides, solar, geothermal heat, and biomass including farm and animal waste is known as non-conventional energy. All these sources are renewable or inexhaustible and do not cause environmental pollution. More over they do not require heavy expenditure.
Natural resources that can be replaced and reused by nature are termed renewable. Natural resources that cannot be replaced are termed nonrenewable.
Renewable resources are replaced through natural processes at a rate that is equal to or greater than the rate at which they are used, and depletion is usually not a worry.
Nonrenewable resources are exhaustible and are extracted faster than the rate at which they formed. E.g. Fossil Fuels (coal, oil, natural gas).
Fossil fuels and alternate sources of energyGaurav Kapoor
Fossil fuels and nuclear energy, there
limitation, need for renewable energy, non-conventional energy sources. An overview of
developments in Offshore Wind Energy, Tidal Energy, Wave energy systems, Ocean
Thermal Energy Conversion, solar energy, biomass, biochemical conversion, biogas
generation, geothermal energy tidal energy, Hydroelectricity.
Ocean Thermal Energy Conversion SystemsNaveen Kumar
OTEC or OCEAN THERMAL ENERGY CONVERSION, is a renewable energy technology that converts solar radiation to electric power by use of the world oceans. The use of OTEC as a source of electricity will help reduce the state’s almost complete dependence on imported fossil fuels. About one fourth of the 1.7 * 1013 watts of solar energy reaching the earth’s atmosphere is absorbed by sea water. OTEC can be considered as an indirect solar technology because the surface water are warmed by the sun. OTEC can also be used to produce ammonia, hydrogen, aluminium, chlorine and other chemicals.
Sea waves have high energy densities, the highest among renewable energy sources with the natural seasonal variability of wave energy following the electricity demand in temperate climates securing energy supplies in remote regions.
Energy generated by using wind, tides, solar, geothermal heat, and biomass including farm and animal waste is known as non-conventional energy. All these sources are renewable or inexhaustible and do not cause environmental pollution. More over they do not require heavy expenditure.
Natural resources that can be replaced and reused by nature are termed renewable. Natural resources that cannot be replaced are termed nonrenewable.
Renewable resources are replaced through natural processes at a rate that is equal to or greater than the rate at which they are used, and depletion is usually not a worry.
Nonrenewable resources are exhaustible and are extracted faster than the rate at which they formed. E.g. Fossil Fuels (coal, oil, natural gas).
Fossil fuels and alternate sources of energyGaurav Kapoor
Fossil fuels and nuclear energy, there
limitation, need for renewable energy, non-conventional energy sources. An overview of
developments in Offshore Wind Energy, Tidal Energy, Wave energy systems, Ocean
Thermal Energy Conversion, solar energy, biomass, biochemical conversion, biogas
generation, geothermal energy tidal energy, Hydroelectricity.
Ocean Thermal Energy Conversion SystemsNaveen Kumar
OTEC or OCEAN THERMAL ENERGY CONVERSION, is a renewable energy technology that converts solar radiation to electric power by use of the world oceans. The use of OTEC as a source of electricity will help reduce the state’s almost complete dependence on imported fossil fuels. About one fourth of the 1.7 * 1013 watts of solar energy reaching the earth’s atmosphere is absorbed by sea water. OTEC can be considered as an indirect solar technology because the surface water are warmed by the sun. OTEC can also be used to produce ammonia, hydrogen, aluminium, chlorine and other chemicals.
Sea waves have high energy densities, the highest among renewable energy sources with the natural seasonal variability of wave energy following the electricity demand in temperate climates securing energy supplies in remote regions.
Basic principles, power in wind, force on blades & turbines, wind energy conversion, site selection, basic components of wind energy conversion systems (WECS), classification of WECS, wind energy collectors, applications of wind energy
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
3. Introduction
• • Winds are horizontal movement of AIR from an area of
HIGH pressure(H) to an area of low pressure(L).
• • Wind energy is a kinetic energy associated with
movement of large masses of air.
• • It is clean, cheap, and eco-friendly renewable source.
• • Wind energy is utilized as mechanical energy with the
help of a wind turbine.
• • Moderate to high-speed winds, typically from 5m/s
to about 25m/s.
• are considered favorable for most wind turbines.
• • The electric power generation through wind was first
proposed in Denmark in 1890.
4. Why Wind Energy?
• Clean, zero emissions
• NOx, SO2, CO, CO2
• Air quality, water quality
• Climate change
• Reduce fossil fuel dependence
• Energy independence
• Domestic energy—national security
• Renewable
• No fuel-price volatility
5. Drawbacks
• • Wind energy available is fluctuating in nature and it
varies from zero to storm force.(unreliable)
• • Wind energy systems are noisy in operation; a large
unit can be heard many kilometers away.
• • Birds and bats have been killed by flying into the
rotors.
• • Good wind sites are often located in remote locations,
far from cities where the electricity is needed.
• • Installation & Maintenance cost of wind turbine is
high.
6. Wind in action:
Wind Today!!!
Windmills are used for pumping water from deep underground.
Modern wind turbine is the result of design and material advances
made during the 1980s and 1990s, which enabled wind turbines to
become increasingly efficient.
Today, wind turbines are size same as the traditional European
windmill.
It can generate 250 to 300 kilowatts of power- a nearly tenfold
increase in efficiency
History of Wind usage:
one of the earliest energy resources.
Recorded in history, first to power boats and grind grain, later to
pump water, press oil, saw lumber and make paper.
8. Origin of winds
• The origin of winds may be traced basically to uneven
heating of the earth’s surface due to sun.
• This may lead to circulation of widespread winds on a
global basis, producing planetary winds or may have a
limited influence in a smaller area to cause local winds.
9. GLOBAL (OR PLANETARY) WINDS
• • Two major forces
determine the speed and
direction of wind on a global
basis : 1.Primary force : Due
to differential heating of the
earth at equatorial and polar
regions. (Heat transfer)
• 2.Spinning of earth about its
axis produces a Coriolis
force, which is responsible
for deviation of air currents.
(deflects the direction of
wind)
10. • • Localized uneven heating
is responsible for local
winds. Local winds are
produced due to two
mechanisms:
• 1.Due to differential
heating of land surface and
water bodies due to solar
radiation.
• 2.Due to differential
heating of slopes on the
hillsides and that of low
lands.
11. FACTORS AFFECTING THE DISTRIBUTION OF
WIND ENERGY ON THE SURFACE OF THE EARTH
Both global and local factors influence the availability
of wind energy at particular site.
• i. On the planetary level, great mountain masses
influence the circulation of air currents.
• ii. Surface roughness or friction, due to the resistance
that different elements of the earth surface like hill’s,
tall buildings, trees and similar obstructions impair
streamline air flow. Wind velocity in horizontal direction
gets markedly reduced. Frictional effect is less on
smooth areas such as sea shore or large open areas and
more in rough urban areas with tall building and trees.
• iii. Wind speed also increases while passing through
narrow mountain gaps where it gets channeled.
12. VARIATION OF WIND SPEED WITH
HEIGHT
• • Wind shear : Rate of
change of wind speed
with height
• • At the earth’s surface,
wind speed is always
zero. It increases with
height above the
ground. The wind near
the earth’s surface is
retarded by surface
roughness.
13. Turbines can be categorized into two classes
based on the orientation of the rotor.
14.
15. Vertical-Axis Turbines
Advantage
• Omni-directional
• accepts wind from any direction
• Components can be mounted
at ground level
• ease of service
• lighter weight towers
• Can theoretically use less
materials to capture the same
amount of wind
Disadvantage
• Rotors generally near ground
where wind is poorer
• Centrifugal force stresses blades
• Poor self-starting capabilities
• Requires support at top of
turbine rotor
• Requires entire rotor to be
removed to replace bearings
• Overall poor performance and
reliability
21. WIND FARM
• wind farm or wind park, also called a wind power station or wind
power plant , is a group of wind turbines in the same location used to
produce electricity. Wind farms vary in size from a small number of
turbines to several hundred wind turbines covering an extensive
area. Wind farms can be either onshore or offshore.
23. WIND ENERGY POTENTIALS OF INDIA
• o The National Institute of Wind Energy, formerly the Centre of
Wind Energy Technology, recently announced that the total onshore
wind energy potential in the country is 302 GW (determined at a
hub height of 100 meters).
• The fresh estimates are six-times the wind energy potential
determined at a 50 meter hub height, and three-times the potential
estimated at a hub height of 80 meters.
• Of the total estimated 302 GW potential, 153 GW is available in
wasteland, 146 GW in cultivable land, and 3 GW in forest land.
(Mittal, 2015)o "The new Berkeley Lab study has found the total
techno-economic wind potential to range from 2,006 GW for 80-
meter hub heights (an indication of how high the wind turbine
stands above the ground) to 3,121 GW for 120-meter hub heights,"
an LBL news release states. (Shahan, 2012).
• o Only 25% of potential realization gives us an opportunity as big as
double the present total installed capacity. This shows the huge
potentials in wind energy in India.
24. FUTURE OF WIND ENERGY
IN INDIA
• • Demand for energy is bound to increase with the
increased economic development in the country.
• Indian economy is reviving (7.4% in 2014) after sluggish
growth in the last three years (6.6%, 5.1% and 6.9% for
2011, 2012 and 2013 respectively) (The World Bank,
2015).
• It is expected to grow at faster pace in the times to come
as Government of India is stressing upon "Make in India",
"Ease of Doing Business" and "Digital India"
predominantly besides land and labor reforms.
• It will further push the demand of electricity in almost all
the sectors i.e. household, agriculture, commercial,
institutional and industrial sector.
25. Conclusion
• o Wind energy has bright future and we can expect 30%
contribution of wind energy in the total generation mix of
electricity in India by 2050..
Though wind energy has its own negatives like noise and
loss of birds life yet concentrating on off-shore potentials
development and development of bladeless windmills that
are having no visibly moving parts and reduced noise will
solve these problems in coming decades.