Transcript Basic Motors Presentation

Solar Power: What, How and Why?
Nina Garratley
Widening Participation and Student Experience Coordinator
College of Engineering, Mathematics and Physical Sciences
© Nina Garratley, Widening Participation and Student Experience Coordinator CEMPS,
University of Exeter 04.05.2016. This work is designed to be used at a key stage 4 or equivalent
level and is adapted appropriately to show an example of Higher Education Learning; using
appropriate research from the academic departments of the University of Exeter and is to be
used as a teaching and learning resource and not a published academic article. This work is
licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this
license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons,
PO Box 1866, Mountain View, CA 94042, USA.
University Style Learning
This session is designed to be similar to a
Lecture: everyone on the course gathers together to
university seminar in Wind Energy. There are
learn about a topic usually an overarching one e.g. if
different types of learning methods used in
you had a lecture before this session it would most
university.
likely be about Renewable Energy as a whole.
Seminar: smaller group that looks more closely at
the topic in detail. This topic would be Wind
Energy so you would explore ideas around wind
energy and then you would be set a task either
individually or within a group. University students
would most likely go off to engineering labs and
construction zones to work on their task.
Fieldwork: is when you go off campus to explore the
topic even further and see how the research works in
Students attending fieldwork site – hands on problem
based learning.
a real world scenario.
What is
Renewable
Energy?
‘Intelligent’ robotic boat
piloted by Exeter researchers
makes maiden voyage
It is energy produced
from a source that is not
depleted when used
C-Enduro, produced by ASV global, is the size of a small car,
uses energy harvesting technology and has the capacity to travel
and can be replenished.
at sea for up to three months over a range of 4,000 miles. It has a
self-righting hull and has been built to operate in all marine
environments.
http://emps.exeter.ac.uk/news-events/news/title_502463_en.html
Where Does Our Electricity Come
From?
Before we can have electricity, we must find energy sources.
Renewable energy means that the source is not depleted over time and
will not run out. Some of the most common sources are shown below:
Nuclear
Wind
Solar
Renewable
Energy
Sources
Non-Renewable
Biomass
Oil
Hydroelectric
Natural Gas
How Do We Generate
Electricity?
Engineers are tasked with finding the most energy
efficient ways to produce electricity:
• Roughly 3,850,000 Exajoules of energy hit the Earth’s surface
every year, but the annual consumption of the Earth is only around
560 Exajoules.
• We would only need 6 hours of solar energy collection from desert
areas in order to power the planet for a year…
BUT… The efficiency of our solar energy devices is not nearly efficient
enough to convert 100% of the solar energy into electricity.
How Does Land Surveying Work?
Watch this Video
https://www.youtu
be.com/watch?v=
q20-DBAmm2E
How Do We Generate
Electricity?
The following video explains
how the electricity that we
use is generated
https://www.youtube.com/watch?v=20
Vb6hlLQSg (Until 2:28)
What is the Difference Between
a Motor and a Generator?
Motors
Generators
Converts electrical energy
into mechanical energy.
Converts mechanical energy
into electrical energy.
Can be found in Cars,
Fridges, DVD Players,
Vacuum cleaners, and most
things which require electricity
to move.
You mostly find generators in
power plants but they are also
commonly found in dynamos
on bicycles (where they
power lights).
How Do Motors Work?
A simple motor is just a coil of wire, a magnet and a
supply of power.
When the coil is attached to the power supply (i.e.
battery) and is within a magnetic field, it experiences a
force which can be harnessed into a rotation.
This is the mechanical energy converted from electrical.
Generator or Motor?
Try to answer the following scenarios with whether a
generator or motor has been used in the process…
• A coal power plant burns the coal and produces
electricity
• GENERATOR
• A washing machine needs electricity in order to
spin the drum
• MOTOR
• A rechargeable torch is powered by turning the
handle repeatedly
• GENERATOR
Engineering at University
The Penryn campus is home to the Clean Energy department who
teach and research clean and efficient ways to generate electricity.
Here is an example of a project the students do: They have to build
a water turbine out of scrap material and then compete to see who
can generate the most electricity!
(Can you spot the
bicycle wheels and
old guttering?)
Find out more about studying
Engineering at university.
https://www.youtube.com/watch?v=HClzXyK_HeY
http://www.whatuni.com/degreecourses/search?subject=engineering&sort=crh
http://www.careerpilot.org.uk/info/a-levels/choosing-your-a-levelswhat-you-/
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the Conversation!
question?
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Tel: 01392 xxxxxx
@uniofexeter
Xxxxxx
@exeter.ac.uk
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