Renewable Energy Systems

NAVEED UR REHMAN
www.naveedurrehman.com
www.naveedurrehman.com 1

This is only the introduction part of a very
big presentation.
Please download the full version from here:
https://goo.gl/bXRLGd

RENEWABLE ENERGY SYSTEMS
Outline
1. Introduction
2. Solar Energy
3. Wind Energy
4. Hydropower
5. Biomass Energy
6. Geothermal Energy
7. Wave and Tidal Energywww.naveedurrehman.com 3

Introduction
• Comparison of different forms of energy
• National and global patterns of energy supply
and utilization
• Temperature and other climate impacts

Solar Energy
• Solar radiations
• Passive and active solar thermal energy system
• Solar thermal applications
• Water and space heating
• Solar ponds, dryers and distillation
• Solar thermal electric systems
• Photovoltaic cells
• Storage system www.naveedurrehman.com 5

Wind Energy
• Wind resources and characteristics
• Wind machinery and generating systems
• Wind turbine types:
horizontal axis & vertical axis
• Betz conditions
• Effects of solidity
• Controlling and optimizing wind turbine
performance www.naveedurrehman.com 6

Hydropower
• Basic energy conversion principle
• Conversion equipment and engineering
operations
• Hydraulic machine types
• Affinity laws and specific speed related to
rotodynamic machines

Biomass Energy
• Biomass resources and biofuels production
• Properties relevant to energy production
• Thermal conversion of biomass
• Biochemical conversion: anaerobic digestion,
fermentation to alcohol, physical processing
and briquetting
• Combustion process
• Use of biomass derived fuelswww.naveedurrehman.com 8

Geothermal Energy
• Geophysics of the earth’s interior
• Hydrothermal and geo-pressured systems
• Equipment for recovering energy
• Direct heat utilization and electric power
generation

Wave and Tidal Energy
• Energy from tides, waves and temperature
differences
• Economic prospects
• Environmental and sustainability considerations
• Types of equipment for extracting wave and
tidal energy

Books
• John Twidell and Tony Weir, “Renewable
Energy Resources”, Routledge, 2014.
• Godfrey Boyle, “Renewable Energy:
Power for a Sustainable Future”, Oxford
University Press, 2004.

Introduction
NAVEED UR REHMAN
www.naveedurrehman.com

INTRODUCTION
All the renewable energy sources are principally derived
from the enormous power of Sun's radiation.

INTRODUCTION
These renewable energy sources are at once, the most
ancient and now, the most modern forms of energy used
by humanity.

INTRODUCTION
Solar power is one of the ultimate sources of energy upon
which early human societies were based.

INTRODUCTION
When our ancestors first used fire, they were harnessing
the power of photosynthesis which is a solar driven
process by which plants are created from water and
atmospheric carbon dioxide.

INTRODUCTION
Societies went on to develop ways of harnessing the
movements of water and wind to grind corn, irrigate crops
and propel ships.

INTRODUCTION
Both the natural movements of water and wind are caused
by solar heating of the oceans and atmosphere.

INTRODUCTION
As civilizations became more sophisticated, architects
began to design buildings to take advantage of the Sun’s
energy by enhancing their natural use of its heat and light,
so reducing the need for artificial sources of warmth and
illumination.

INTRODUCTION
Technologies for harnessing the power of Sun, water and
wind continued to improve right up to the early years of
the industrial revolution.

INTRODUCTION
However, by then the advantages of coal,
the first of the fossil fuels to be exploited
on a large scale, had become apparent.

INTRODUCTION
These highly-concentrated energy sources soon displaced
wood, wind and water in the homes, industries and
transport systems of the industrial nations.

INTRODUCTION
Today the fossil fuel trio of coal, natural gas and oil provide
over 80% of the world’s energy.

INTRODUCTION
Concerns about the adverse environmental and social
consequences of fossil fuel use, such as air pollution, oil
spills, mining accidents, deforestation and about the finite
nature of supplies, have been voiced intermittently for
several centuries.

INTRODUCTION
But it was not until the 1970s,
with the steep price rises of
the ‘oil crisis’ and the advent
of the environmental
movement, that humanity
began to take more seriously
the prospect of fossil fuels
‘running out’, and the
possibility that their
continued use could be
destabilizing the planet’s
natural ecosystems and the
global climate. www.naveedurrehman.com 25

INTRODUCTION
The development of nuclear energy following World War II
raised hopes of a cheap, plentiful and clean alternative to
fossil fuels.

INTRODUCTION
However, nuclear power development has stalled in some
countries in recent years, due to increasing concern about
safety, cost, waste disposal and weapons proliferation,
although in other countries nuclear expansion is
continuing.

INTRODUCTION
Continuing
concerns about
the
‘sustainability’ of
both fossil and
nuclear fuel use
have been a
major catalyst of
renewed interest
in the renewable
energy sources in
recent decades.

INTRODUCTION
Now, what is a Sustainable Energy Source?
Sustainable energy source is one which help this
world in meeting its present needs without
depleting of serving next generation’s needs.

INTRODUCTION
Sustainable energy does not involve significant
pollutant emissions or other environmental
problems.

INTRODUCTION
Also, sustainable energy does not involve the
spread of substantial health hazards or social
injustices.

INTRODUCTION
At present, oil and gas present at large scale and
thus are sustainable energy sources.

INTRODUCTION
What is a Renewable
Energy Source?
Renewable energy
source include such a
natural source which
can be replaced by
natural ecological
cycles. That is, they
renew thus never gets
deplete.

INTRODUCTION
Tidal, wave, geothermal, wind and solar energies
are counted as renewable energy sources.

INTRODUCTION
The energy
coming from
sun and wind
can be
characterized
as both
sustainable
and
renewable
energy
sources.

This is only the introduction part of a very
big presentation.
Please download the full version from here:
https://goo.gl/bXRLGd

Renewable Energy Systems

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