Solar Sun Flames Photovoltaic Cells 3

Photovoltaic Cells: Electricity From The Sun
Solar Sun Flames
Photovoltaic Cells 3
by P. Anna Paddon
09-18-2012

Photovoltaic
Solar Cells
Electricity
From The Sun
Powerpoint Templates
Page 1
http://www.originenergy.com.au/2029/Photovoltaic-cells

First Page: Photovoltaic Solar Cells
Electricity From The Sun
●
Photovoltaic Solar Electricity
From The Sun
‘Photovoltaic cells’ are used to make electricity from sunlight. They are
sometimes called solar cells.
Photovoltaic cells (PV) generate electricity when exposed to sunlight. They
were developed for use in space to provide power for satellites. The
Russian Sputnik 3 satellite in 1957 was the first to use solar power.
Early solar cells were used to provide power in remote locations where
other power (e.g. mains electricity) was not available. Uses included power
for remote telephones, water pumps, lighting and small consumer
electronics like watches and calculators.
Home solar cells can be used with mains electricity to provide household
electricity and pump surplus power back into the electricity grid.
Solar power is also used by electricity generators to produce renewable
energy.
Electricity from solar power is an environmentally friendly alternative to
electricity produced by other sources, such as coal, that produce
greenhouse gases.
----Household solar power
····How do PV cells work?
– Photovoltaic solar investigations:
• ··Investigation 1: Solar cells - how much solar?
• ··Investigation 2: Solar cells - solar search
Learn about: Passive solar, Thermal solar

* DC = Direct current is a continuous, consistent flow of current (electrons)
in one direction.
* AC = Alternating current where both the direction and amount of current
varies cyclically.

http://www.hightechscience.org/solar_express.htm
Page 2

Second Page: Photovoltaic Solar Cells
●
Photovoltaic Solar Electricity
From The Sun
‘Photovoltaic cells’
----Household solar power
····How do PV cells work?
– What is watt (W)?
A W is a measurement of energy used. Electricity
consumption is measured in watt-hours (Wh) and more
typically kilowatt-hours (kWh).
A simple example is a 100W light globe. This means it
uses 100 joules (J) per second. To power the light for one
hour would require 100Wh of electricity or 0.1kWh of
electricity.
* DC = Direct current is a continuous, consistent flow of
current (electrons) in one direction.
* AC = Alternating current where both the direction and
amount of current varies cyclically.

●
Closed loop thermochemical energy storage system using ammonia . If solar energy is to become
a major contributor to our energy supply, means to store it have to be found. One promising
method is “closed loop thermochemical energy storage using ammonia”.

http://solar-thermal.anu.edu.au/high-temperature/thermochemical-energy-storage/

http://www.hightechscience.org/solar_express.htm
Page 3

Third Page: Photovoltaic Solar Cells
EXCELLANT. This video LINK provides a clear Household Solar Power
explanation There are three components in a household solar power
of how a swimming pool can be heated with solar system.
energy. • Solar panels are flat panels of solar cells usually located
on the roof and face towards the sun
• Inverter converts the ··DC (direct current)* current from
http://www.sunshinesolartech.com/presentation.html the cells to ··AC (alternating current)* – the type of current used
in homes. Some inverters have a display that shows how much
power is being generated from the solar panels
• Two-way electricity meter allows surplus power from
the solar cells to be directed into the electricity grid for other
consumers to use. The value of the surplus power is credited to
the household electricity account.

Trough systems collect the sun's energy using long rectangular, parabolic mirror collectors. The trough field consists of a
large array of these modular collectors. Many parallel rows of collectors span across the solar field, normally aligned on a north
south axis. The mirrors mechanically rotate and follow the sun east to west, focusing sunlight on receiver tubes that run the
length of the mirrors. The receiver tubes are positioned along the focal line of each parabolic mirror. The reflected condensed
sunlight is very intense and heats a fluid flowing through the tubes to a very high temperature (about 550 degrees Celsius or
1020 degrees Fahrenheit). The very hot fluid is then used to heat water to create steam for a conventional steam turbine
generator to produce electricity. The receiver tube is heated by the reflected sun's rays which in turn heats up a transfer fluid
as it circulates through the tubes. The receiver tube is a stainless steel tube with a special sunlight absorbing surface and is
mounted inside an anti-reflective outer glass tube with a vacuum separating the two tubes. Originally a special type of oil,
http://solarcellcentral.com/csp_page.html molten salt iswas used as the percent sodium nitrate and 40 percent using a molten saltcommonly called saltpeter. fluid.
called therminol,
The a mixture of 60
transfer fluid. Today, new designs are
potassium nitrate,
compound as the transfer
The
molten salt can achieve a higher temperature and hold heat longer than the therminol. However, the molten salt must be kept
at a temperature of about 290 degrees Celsius to keep it fluid as

http://www.originenergy.com.au/2029/Photovoltaic-cells Page 4

Fourth Page: Photovoltaic Solar Cells
http://www.eere.energy.gov/consumer/images/residential
Assessment of photovoltaics potential in urban areas using GIS
aroslav Hofierka, Ján Kaňuk Department of Geography and Regional
Development, University of Presov, Slovakia

Abstract: This study shows how the potential of photovoltaic (PV)
electricity production can be assessed using a 3-D city model and
geographic information system (GIS) technology. The 3-D city model
of Bardejov (eastern Slovakia) has been prepared using existing map
data and field work (laser mapping). The parameters related to solar
radiation input of buildings have been mapped (building's height, type
of roof, available area of the roof, slope, aspect, shadows, restriction
on building cultural heritage) and implemented into a GIS database.
The PV potential has been assessed using PVGIS web-based utility.
Morphological zones of urban areas have been defined in order to
evaluate the PV potential of various urban zones in Slovakia without a
need for 3-D city models and time-consuming mapping and
calculations for the other Slovak cities. The solar radiation model
r.sun implemented in GRASS GIS has been applied on this 3-D city
model to account for shadows potentially cast over roof areas.
Expected further work: Development of a 3-D version of the r.sun
solar radiation model implemented in GRASS GIS to account for
facades and temporal changes in shadows. A complete 3-D city
model will be prepared (including trees, inhabitants and power-
consumption statistics). A comparison of PV and heating/cooling
application. http://www.fhpv.unipo.sk/kagerr/pracovnici/hofierka/projekty/pv_results.html

Page 5

Fifth Page: Photovoltaic Solar Cells
Typical Features Of Photovoltaic Solar Cells:
• Eaves (where the roof overhangs to provide shade) to keep
summer sun out but let winter sun in
• North facing windows to maximise solar gain in the winter
• Insulation (especially in roofing) to reduce heat loss in winter
and heat gain in summer Heating, Cooling, Ventilation and
Electrical Systems

Heating, Cooling, Ventilation and Electrical Systems
ht ps:/ marketplace.secondlife.com/p/Solar-Panel- Photovoltaic-Animated/615501?
B — Co-Generator Unit
Provides heat (and electricity) when passive solar heat or photovoltaic id=615501&slug=Solar-Panel-Photovoltaic-Animated
(PV) generated electricity is insufficient.
K — Solar Photovoltaic Panels
Provides approx. 80% of electrical requirements.
L — Batteries
Sufficient electrical energy storage for 4 days without sunshine.
http://www.cmhc-schl.gc.ca/en/co/maho/yohoyohe/heho/hehoto/hecoveelsy/hecoveelsy_005.cfm
Page 6

Sixth Page: Photovoltaic Solar Cells
●
How do PV cells work?
Electrons in the solar cells are activated by the sun’s radiation,
which produces an electrical current. During daylight, even under
cloud cover, the solar cells will produce some current. More sun
means more current. Without the sun, solar cells cannot produce
current, for instance at night.
Solar panels are described by their maximum current output under
standard test conditions (STC). A typical solar panel of 1.4 metres
square will produce 160 watts (W) in full sunshine. Cloudy skies or
high air pollution will reduce this output significantly.

Electronic Projects Circuits
Easy Electronics Circuit
Project for Students and
Hobbyist
http://circuiteasy.com/solar-
cell/

Page 7

Seventh Page: Photovoltaic Solar Cells
Investigation • ··Investigation 1: Solar Cells-How Much Solar
Task : What is watt (W)?
In Class
A W is a measurement of energy used. Electricity consumption is measured in watt-hours (Wh) and more typically kilowatt-hours
(kWh).
1. Discuss findings.
A simple example is a 100W light globe. This means it uses 100 joules (J) per second. To power the light for one hour would require 100Wh of
electricity or 0.1kWh of electricity.
● Photovoltaic solar investigations:

2. Create a list of everybody’s results.
• ··Investigation 1: Solar cells - how much solar?
• ··Investigation 2: Solar cells - solar search
W hat you need-
Step 1- Record .
Step 2- Record
3. Discuss why the findings are the same or different.
Step 3 - Record
Step 4- Record
Step 5
•
•
Warmest spot

Coolest spot
http://www.originenergy.com.au/files/investigation_5-howmuchsolar.pdf
http://www.originenergy.com.au/files/investigation_5-howmuchsolar.pdf

Photovoltaic Solar Cells Investigations: Solar Energy Page 8
http://www.originenergy.com.au/2029/Photovoltaic-cells www.originenergy.com.au/education

Eighth Page: Photovoltaic Solar Cells
Australian ··Investigation 2: SOLAR CELLS-SOLAR SEARCH?
Investigation Investigation 2 Solar Cells-Solar

Glossary Search
In Class
Look Up: “Customer churn Mass market energy
customers switching suppliers. “ Discuss
http://www.originenergy.com.au/605/Glossary Solar Eclipse Australia What Happens
to Solar Energy?

http://www.astroadventures.net/2012/AUSTRALIA/eclipse.html Create
LINK Findings
http://www.originenergy.com.au/files/investigation_6-solarsearch.pdf

LINK- http://www.originenergy.com.au/files/investigation_6-solarsearch.pdf

Passive Solar Investigations: Solar Energy
www.originenergy.com.au/education Page 9

Photovoltaic Cells: Electricity From The Sun
Solar Sun Flames
Photovoltaic Cells 3
by P. Anna Paddon
09-18-2012

Thank You
Solar - Renewable Sustainable Enegy
Photovoltaic Solar Cells Electricity From The Sun
Elect.
P. Anna Paddon
MLA-Cowichan/Crofton MAY 14 2013
BC Provincial Election
09-16-2012 Powerpoint Templates Solar 1 P. Anna Paddon 09-16/17-2012 ppt.
Solar Sun Flames Thermal
Page 10
http://www.originenergy.com.au/2029/Photovoltaic-cells Solar Sun Flames Passive Solar 2 P. Anna Paddon 09-17/18-2012 ppt.
Solar Sun Flames Photovoltaic Cells 3 P. Anna Paddon 09-18-2012 ppt.

Solar Sun Flames Photovoltaic Cells 3

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Solar Sun Flames Photovoltaic Cells 3