Solar energy can be used directly or indirectly from sunlight. Direct solar energy heats rooms through windows. Indirectly, solar energy can generate electricity through solar cells. Electricity is generated in solar cells through two processes - solar thermal electric which uses solar heat to drive generators, and solar photoelectric which converts sunlight directly to electricity using semiconductors. Solar energy can be concentrated using collectors to achieve higher temperatures for applications like power generation.
Overview of Solar Power Plant .
Explaining various components working & Use in Solar Power Plant that is used for Commercial Purpose be it industries or any Other commercial organisation .
Solar energy is the energy emitted by the sun.
It is the most abundant and renewable form of energy.
Photovoltaic cells convert light energy into electrical energy.
Assembly of PV cells make solar panels.
Solar panels finds its applications in many fields such as domestic lighting, solar vehicles etc.
A complete report on solar powered house with almost all the details needed. In this report you will find the load calculation, battery size calculation, inverter size calculation, solar panel size calculation, types of connection use for solar powered house
The project we have undertaken is “Solar Inverter”. A solar inverter, or PV inverter, converts the direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-line electrical network.
A solar inverter, or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary commercial appliances. Solar inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
concentrated solar power technology - cspSANTHOSHRAJ60
From these slides, you can able to view the diverse application of concentrated solar power technology. And the thriving global market statistics of CSP technology. The future goals and current technology of CSP operation in India and globally.
Overview of Solar Power Plant .
Explaining various components working & Use in Solar Power Plant that is used for Commercial Purpose be it industries or any Other commercial organisation .
Solar energy is the energy emitted by the sun.
It is the most abundant and renewable form of energy.
Photovoltaic cells convert light energy into electrical energy.
Assembly of PV cells make solar panels.
Solar panels finds its applications in many fields such as domestic lighting, solar vehicles etc.
A complete report on solar powered house with almost all the details needed. In this report you will find the load calculation, battery size calculation, inverter size calculation, solar panel size calculation, types of connection use for solar powered house
The project we have undertaken is “Solar Inverter”. A solar inverter, or PV inverter, converts the direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-line electrical network.
A solar inverter, or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary commercial appliances. Solar inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
concentrated solar power technology - cspSANTHOSHRAJ60
From these slides, you can able to view the diverse application of concentrated solar power technology. And the thriving global market statistics of CSP technology. The future goals and current technology of CSP operation in India and globally.
Solar tracking system, Full Report Submitted in B.Tech, Electrical & Electronics Engineering Final Year @ College of Engineering Roorkee-247667, Uttarakhand, INDIA.
In this Presentation on solar cell is most effect for student of class 12
Contents:
Introduction to Solar Cells .
* The working principal of a solar cell .
* Types of solar cells.
* Working and construction.
* Benefit and disadvantages.
* application.
* Summary.
In this PPT we are add all ditels and latest data.And in this PPT we are make char to when the sun light is reflact in soalr penal and we produced high power.
presentation on solar energy and acid rain combined..
both the presentations are independent from each other....so you can delete the slides you don't want...hope you like it... (y)
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
1. Solar Energy - Power from the Sun
• Most renewable energy comes either directly or indirectly from the sun.
• Direct solar energy is used every day, like when the sun shines on a
window and heats the room
• Solar energy can also be used indirectly to generate electricity in solar
cells
2. SOLAR ELECTRIC
Electricity can be generated in two
ways
i. Solar Thermal Electric
• Solar heat is used to drive heat engines,
which can be coupled to a generator to
produce electricity.
ii. Solar Photo Electric
• Sun rays can be converted directly to
electricity using Semi-Conductors Semi
Conducting photovoltaic cells i.e. Solar
Cell
4. Active solar heating
• Active solar heating is the gathering of solar energy by collectors that
are used to heat water or heat a building
• Solar collectors, usually mounted on a roof, capture the sun’s energy
• A liquid is heated by the sun as it flows through solar collectors
• The hot liquid is then pumped through heat exchangers, which heats
water for the building.
7. Introduction
• For applications such as air conditioning, central power generation,
and numerous industrial heat requirements, flat plate collectors
generally cannot provide carrier fluids at temperatures sufficiently
elevated to be effective.
• Alternatively, more complex and expensive concentrating
collectors can be used.
• These are devices that optically reflect and focus incident solar
energy onto a small receiving area.
• As a result of this concentration, the intensity of the solar energy is
magnified, and the temperatures that can be achieved at the
receiver (called the "target") can approach several hundred or
even several thousand degrees Celsius.
• The concentrators must move to track the sun if they are to
perform effectively
8. Concentrating collectors
• Concentrating, or focusing, collectors intercept direct radiation over
a large area and focus it onto a small absorber area.
• These collectors can provide high temperatures more efficiently
than flat-plate collectors, since the absorption surface area is much
smaller.
• However, diffused sky radiation cannot be focused onto the
absorber.
• Most concentrating collectors require mechanical equipment that
constantly orients the collectors toward the sun and keeps the
absorber at the point of focus.
• Therefore; there are many types of concentrating collectors
9. Types of concentrating collectors
Parabolic trough system
Parabolic dish
Power tower
Stationary concentrating collectors
There are four basic types of concentrating collectors:
10. Parabolic trough system
Parabolic troughs are devices that are shaped like the letter
“u”. The troughs concentrate sunlight onto a receiver tube
that is positioned along the focal line of the trough.
Figure 3.1.2 Parabolic trough system
Figure 3.1.1 Crossection of parabolic trough
11. Parabolic troughs often use single-axis or dual-axis
tracking
Figure 3.1.3 One Axis Tracking Parabolic Trough
with Axis Oriented E-W
Figure 3.1.4 Two Axis Tracking Concentrator
12. Temperatures at the receiver can reach 400 °C and
produce steam for generating electricity. Multi-megawatt
power plants have been built using parabolic troughs
combined with gas turbines (California).
Figure 3.1.5 Parabolic trough combined with gas turbines
13. Parabolic dish systems
A parabolic dish collector is similar in appearance to a large
satellite dish, but has mirror-like reflectors and an absorber
at the focal point. It uses a dual axis sun tracker
Figure 3.2.1 Crossection of parabolic dish
14. A parabolic dish system uses a computer to track the sun
and concentrate the sun's rays onto a receiver located at
the focal point in front of the dish. Parabolic dish systems
can reach 1000 °C at the receiver.
15. Power tower system
A heliostat uses a field of dual axis sun trackers that
direct solar energy to a large absorber located on a
tower. To date the only application for the heliostat
collector is power generation in a system called the
power tower (solar tower)
Figure 3.3.2 Heliostats
Figure 3.3.1 Power tower system
16. A heliostat (from helios, the Greek word for sun, and
stat, as in stationary) is a device incorporating a
mirror which moves so as to keep reflecting sunlight
toward a predetermined target or receiver, despite
the sun's apparent motions in the sky.
The target is stationary relative to the heliostat, so
the light is reflected in a fixed direction.
Most modern heliostats are controlled by computers.
The computer is given the heliostat's position on the
earth (latitude and longitude) and the time and date,
and uses them to calculate the direction of the sun as
seen from the mirror.
17. A power tower has a field of large mirrors that follow the
sun's path across the sky. The mirrors concentrate
sunlight onto a receiver on top of a high tower. A
computer keeps the mirrors aligned so the reflected rays
of the sun are always aimed at the receiver, where
temperatures well above 1000°C can be reached. High-
pressure steam is generated to produce electricity.
Figure 3.3.3 Power tower system with heliostats
19. How electricity is generated through
Solar Energy?
Solar photo voltaic (SPV). Can be used
to generate electricity form the sun.
Silicon solar cells play an important role
in generation of electricity.
20. Photovoltaic cells
Sunlight falls on a semiconductor,
causing it to release electrons.
The electrons flow through a
circuit that is complete when
another semiconductor in the
solar cell absorbs electrons and
passes them on to the first
semiconductor.
22. 22
Absorption of Light by Atoms
Sources: http://members.aol.com/WSRNet/tut/absorbu.htm, http://csep10.phys.utk.edu/astr162/lect/light/absorption.html
Single electron
transition in an
isolated atom
• Absorption occurs only when the energy of
the light equals the energy of transition of
an electron
Light
23. In dye-sensitized
solar cells…
Talk about highest
occupied molecular
orbital (HOMO) and
lowest unoccupied
molecular orbital
(LUMO)
23
So What Does this Mean for Solar Cells?
Source: Original Images
• In single-crystal silicon
solar cells…
– Talk about “conduction
band” (excited states)
and “valence band”
(ground states)
24. 24
How a Silicon-Based Solar Cell
Works
Source: http://nanosense.org/activities/cleanenergy/solarcellanimation.html
• A positive “hole”
is left in the
electron’s place
• This separation of
electrons and holes
creates a voltage
and a current
• Light with energy greater than the band gap energy
of Si is absorbed
• Energy is given to an electron in the crystal lattice
• The energy excites the electron; it is free to move
Click image to launch animation
(requires web access)
26. Sunlight is made of photons, small particles of energy.
These photons are absorbed by and pass through the material of a
solar cell or solar PV panel.
The photons 'agitate' the electrons found in the material of the
photovoltaic cell.
As they begin to move (or are dislodged), these are 'routed' into a
current.
This, technically, is electricity - the movement of electrons along a
path.
The Process
27. Working Principle of Solar Cell
27
Source: https://www.youtube.com/watch?v=j1jF3in2JUE
28. From Cells to Modules
The open circuit voltage of a single
solar solar cell is approx 0.5V.
Much higher voltage voltage is
required for practical application.
Solar cells are connected in series to
increase its open circuit voltage.
29. Groups of solar cells can be packaged into modules,
panels and arrays to provide useful output voltages and
currents to provide a specific power output.
31. • Mono-crystalline solar panels,
silicon is formed into bars and
cut into wafers.
• These types of panels are called
“mono-crystalline” to indicate
that the silicon used is single-
crystal silicon.
• These cell is composed of a
single crystal, the electrons
that generate a flow of
electricity have more room to
move.
• As a result, monocrystalline
32. Polycrystalline solar
panels are also made
from silicon.
Polycrystalline solar
panels are also
referred to as “multi-
crystalline,” or many-
crystal silicon.
There are many
crystals in each cell,
there is to less
freedom for the
electrons to move.
As a result,
polycrystalline solar
panels have lower
efficiency ratings than
monocrystalline
33. pervoskite
solar cell
Advantages
High power to weight ratio
High power to cost ratio
Minimum materials per Watt
High absorption Capabilities
Flexible and easy to install
Simple manufacturing
Convenience of shape and size
Fig: Flexible
Substrate
35. Solar cell
In principle, a solar cell is a junction device obtained
by placing two electronically dissimilar materials
together with a thin barrier.
Solar cell works on the principle of photo-electric
effect i.e. the ejection of electrons from the metal
surface in response to incident light.
The basic steps of photovoltaic energy conversion
Light absorption
Charge separation
Charge collection.
35
36. Plasmonic Effect
Surface plasmon resonance (SPR)
has the optical control ability to
trap light in solar cells.
The metal NP boost the light
absorption capability of dye
molecules
Core-Shell Ag@TiO2
Nanostructure avoid the metal
core from being degraded by dye
molecules and electrolyte
Fig. Surface Plasmon Resonance
Fig. Core-Shell Nano particle Structure
37. Shell Thickness Effect
Fig. Illustration of LSPR and UV-VIS Absorption Spectra of Cu@TiO2 NS with Shell Thicknesses of 3, 5,
7, and 10 nm (blue, green, pink and red respectively)
38. Electric Field Intensity Distribution
Fig. EFI Distribution of Cu@TiO2 by FDTD Analysis at 520nm for Shell Thickness of (a) 3nm (b) 5nm (c)
7nm (d) 10nm
39. Results of Objectives-2
• The photo-anode based on Titanium Oxide, Graphene
Oxide, and their bilayer composite were modeled
using COMSOL Multiphysics
Figure: Photo-anode based on (a) Graphene oxide, (b) Titanium oxide
and (c) bilayer composite of Graphene oxide/Titanium oxide (GO/TiO2)
40. Absorption VS Wavelength
• DSSC based on bilayer
composite materials has
broadband absorption
(24.4%) as compared to
that based on pure TiO2
and GO layers.
• Bilayer structure that
resulted in a larger
surface area for dye
loading.
• As the coming light
trapped for a long time
so the photon interaction
with the dye molecules is
increased and produces
many excited electrons
that jump to the
conduction band of
GO/TiO .
Fig. 3 UV-Visible absorption spectrum of
oxides based photo-anode without silver
nanoparticles
41. Selected Figures from Paper 4
Fig. 1. various geometries of aluminum nanoparticles embedded in
SiO2
Fig. Schematic diagram of Composite bilayer structure of TiO2/SiO2
photoanode based on (a) spherical-shaped (b) nanorod/nanosphere (c)
nanosphere/nanorod
42. Conclusion from the
Characteristics.
Power of the module has only single
maxima.
Peak Power of the module changes
with the change in temperature.
Need to track the peak power in
order to maximize the utilizations of
the solar module/array.