The document discusses solar energy and its use. It begins with defining solar energy and its origin from the sun's thermonuclear reactions. It then discusses some key advantages and disadvantages of solar energy, including that it is a diffuse source that must be concentrated to be useful. The document also provides an overview of solar irradiance, irradiation, and illuminance and how these quantities are measured. It discusses optimal tilt and orientation of solar panels to maximize energy collection.
Studying the factors affecting solar power generation systems performance ( S...IJERA Editor
Solar energy is a huge, clean and renewable source of energy. It is also available everywhere on the earth. However, there are many technical and economic difficulties need to be solved so that solar energy becomes a strong competition against the traditional energy sources. Energy from the sun can be used successfully in electric power generation systems. Depending on the climate conditions and the use of a properly designed, installing and maintained system can meet a large demand in this request. Work plane for this research will include many steps, the first step will include an introduction to solar energy. The second step will be a short review of the solar energy availability, geometry, fields of applications and the largest commercial application of solar energy is the solar thermal power generation. In addition, the most common types of solar thermal power plants, the solar field, heat transfer fluid and the power conversion system types will be explained in detail. The third step, a simple analysis for the solar thermal power plant will be explained in order to predict the optimum conditions leading to maximum performance. Discussions of results will be the fourth step. The last step a conclusion and recommendation for future work will also be included.
Modeling Of a Bucket Air Cooler by Using Solar EnergyIJMER
In a conventional energy sources day to day decreasing in their energy levels. Going green
and conservation as much energy as possible has become the focal point in their eyes of the world.
There are many sources of energy available to us that will conserve our natural resources and decrease
on harmful emissions that are destroying our environment. Many energy sources available in world like
hydro electrical, thermal, mechanical, solar, tidal, bio gas, wave, wind, geothermal, ocean thermal
energy. Many incentives are now available to individuals and industries who implement the use of this
ecofriendly environment through in this direction we are selected solar energy is main sources.
Our design and construction of a bucket air cooler by using solar energy is new alternative to
conventional energy sources. We set out to create an air cooler that does not create any harmful
emissions in environment and provide no pollution in the surrounding. The solar power as the main
energy sources to help in the project work. It is providing to cooling the enclosed space and also
measured the temperature levels of before and after in absorbed enclosed space
What is Remote Sensing?
Process of Remote Sensing
Electromagnetic Radiations
Electromagnetic Spectrum
Interaction with Atmosphere
Radiations-Target Interactions
Passive Vs Active Sensing
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.
Studying the factors affecting solar power generation systems performance ( S...IJERA Editor
Solar energy is a huge, clean and renewable source of energy. It is also available everywhere on the earth. However, there are many technical and economic difficulties need to be solved so that solar energy becomes a strong competition against the traditional energy sources. Energy from the sun can be used successfully in electric power generation systems. Depending on the climate conditions and the use of a properly designed, installing and maintained system can meet a large demand in this request. Work plane for this research will include many steps, the first step will include an introduction to solar energy. The second step will be a short review of the solar energy availability, geometry, fields of applications and the largest commercial application of solar energy is the solar thermal power generation. In addition, the most common types of solar thermal power plants, the solar field, heat transfer fluid and the power conversion system types will be explained in detail. The third step, a simple analysis for the solar thermal power plant will be explained in order to predict the optimum conditions leading to maximum performance. Discussions of results will be the fourth step. The last step a conclusion and recommendation for future work will also be included.
Modeling Of a Bucket Air Cooler by Using Solar EnergyIJMER
In a conventional energy sources day to day decreasing in their energy levels. Going green
and conservation as much energy as possible has become the focal point in their eyes of the world.
There are many sources of energy available to us that will conserve our natural resources and decrease
on harmful emissions that are destroying our environment. Many energy sources available in world like
hydro electrical, thermal, mechanical, solar, tidal, bio gas, wave, wind, geothermal, ocean thermal
energy. Many incentives are now available to individuals and industries who implement the use of this
ecofriendly environment through in this direction we are selected solar energy is main sources.
Our design and construction of a bucket air cooler by using solar energy is new alternative to
conventional energy sources. We set out to create an air cooler that does not create any harmful
emissions in environment and provide no pollution in the surrounding. The solar power as the main
energy sources to help in the project work. It is providing to cooling the enclosed space and also
measured the temperature levels of before and after in absorbed enclosed space
What is Remote Sensing?
Process of Remote Sensing
Electromagnetic Radiations
Electromagnetic Spectrum
Interaction with Atmosphere
Radiations-Target Interactions
Passive Vs Active Sensing
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.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
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.
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.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
2. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
2
UNIT 1 INTRODUCTION TO SOLAR ENERGY
UNIT 2 SOLAR PHOTOVOLTAIC
3. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
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).
4. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
Solar Energy – A Bright Idea!
“I’d put my money on the sun and solar energy. What a source of
power! I hope we don’t have to wait ‘til oil and coal run out
before we tackle that.”
- Thomas Edison
5. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
People have been harnessing solar energy for a long time!
Solar collector for
heating water
A home in California in 1906
6. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
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.
7. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
How much solar energy?
The surface receives about 47% of the total
solar energy that reaches the Earth. Only this
amount is usable.
12. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
POSITION OF THE SUN
Sun height, height angle,
solar altitude angle or
elevation S
This is the angle between a
line that points from the site
towards the centre of the
sun, and the horizon.
The zenith angle is the
opposite angle to the sun
height (90° - S). At a sun
height of 90°, the sun is at
the zenith and the zenith
angle is therefore zero.
13. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
POSITION OF THE SUN
Sun azimuth S
The sun azimuth S is
the angle, measured
clockwise, between
geographical North and
the point on the
horizon directly below
the sun (at the end of a
line running from the
centre of the sun to the
horizon).
14. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
POSITION OF THE SUN
(Another definition is
sometimes used,
whereby the
definition of the sun
height remains the
same but the sun
azimuth is counted as
zero when the sun is
in the South and
measured
anticlockwise.
Sometimes the
symbols of azimuth
and sun height are
also interchanged.)
15. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
OPTIMAL SOLAR SYSTEM ORIENTATION
The figure visualizes
the sun angles, azimuth
and tilt angle to define
the position of a tilted
surface. The angle of
incidence q depends on
all these angles. As
mentioned above, the
maximum irradiance
can usually be obtained
by a surface that is
perpendicular to the
sun.
16. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
OPTIMAL SOLAR SYSTEM ORIENTATION
Since the position of
the sun changes
during the day and
year, only a two-axis
tracked surface gets
the maximum
irradiation. There, the
annual irradiation can
be more than 30%
higher than at a non-
tracked surface.
17. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
OPTIMAL SOLAR SYSTEM ORIENTATION
A one-axis tracked surface
has an irradiation gain in
the range of 20%. Near
the equator, the optimal
orientation of a non-
tracked surface is nearly
horizontal. In the Northern
Hemisphere, it should be
tilted towards the south,
and in the southern
hemisphere, towards the
north. The optimal tilt
angle increases with
higher latitudes, and is
higher in winter than in
summer.
19. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
SOLAR COURSE
SUN CHART WITH HORIZON
Sun charts
manual or
computerised
simulate the
skyline of the
surroundings
determine periods
of (partial) shading
(and/or reduced
diffuse irradiation)
FUNDAMENTALS 05
20. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
AVAILABLE ENERGY
ATMOSPHERIC TRANSMISSION
direct and diffuse
part of light absorbed and
scattered by the earth’s
atmosphere:
– water vapour
– dust
– ozone
– a.o.
solar radiation: spectrum of wavelengths between 0.4 and 3.5 m
21. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
AVAILABLE ENERGY: LATITUDE & CLIMATE
Monthly amount of solar energy varies depending on season and location (factor 5 -
10)
Yearly amount of solar energy varies depending on location (factor 3-4)
Intensity and colour
content of irradiation
is function of:
•length of path through the
atmosphere
•absorption and scattering
22. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
AVAILABLE ENERGY: SPECTRUM
Light reaching the earth varies considerably
(intensity, colour content, direction)
Air Mass (AM)
indicates the (effective) path
length the light has travelled
through the atmosphere
AM 1
one atmospheric thickness
AM 1.5
typically used in measurements
23. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
Extraterrestrial and terrestrial spectrum of sunlight
24. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
COLLECTED ENERGY: TILT & ORIENTATION
Maximal annual yield
Southern orientation (or
Northern one in the
Southern hemisphere)
optimal tilt of PV depends
on the latitude and local
meteorological conditions
adjustable tilt according
the year season
25. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
COLLECTED ENERGY
DIRECT & INDIRECT RADIATION
Optimal tilt angle of PV array
direct sunlight
equals latitude of the location
indirect / diffuse sunlight
(close to) horizontal
total sunlight
intermediate value
tilt angle can be compromised due
to architectural reasons
26. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
IRRADIANCE, IRRADIATION AND ILLUMINANCE
Various different terms are used when dealing with solar
radiation. However, these terms are often used
incorrectly, even by some solar specialists.
27. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
IRRADIANCE, IRRADIATION AND ILLUMINANCE
The total specific radiant power, or radiant flux,
per area that reaches a receiver surface is called
irradiance. Irradiance is measured in W/m2 and
has the symbol E. When integrating the irradiance
over a certain time period it becomes solar
irradiation. Irradiation is measured in either J/m2
or Wh/m2, and represented by the symbol H.
.
28. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
IRRADIANCE, IRRADIATION AND ILLUMINANCE
For daylighting purposes, only the visible part of the
sunlight is considered. The analogous quantity to the
irradiance for visible light is the illuminance. This uses the
unit lm/m2 (lumen/m2) or lx (lux).
29. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
DIRECT AND DIFFUSE IRRADIANCE
Other atmospheric particles
reflect or scatter sunlight. Only
a part of the extraterrestrial
beam irradiance reaches the
earth's surface directly.The
scattered part of the
irradiance has no direction.
Only direct irradiance can be
used for concentrating solar
systems, but non-
concentrating systems can also
use the scattered, or diffuse
irradiance
30. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
The so-called global
irradiance Eg on a
horizontal surface on
earth consists of the
direct Edir and diffuse
irradiance Edif.
32. UNIVERSITI TEKNIKAL MALAYSIA MELAKA
Always a Pioneer, Always Ahead
INSTRUMENTS
Sensors for solar irradiance
measurements (clockwise
from top) - Pyranometer
with thermal sensor for
global irradiance
measurements, Two-axis
tracked pyrheliometer for
direct normal irradiance
measurements,
Pyranometer with shading
ball for diffuse irradiance
measurements