http://img.alibaba.com/photo/222445135/active_solar_water_heater_pressurized_split.jpg
Taylor D.
Miles H.rd
APES 3 4/06/10
 They are environmentally
friendly
 Helps save the earth’s
energy resources
 It is the best choice for
people who have
allergies
 To use a little energy
while saving money
 You can save between
50%- 80% on your
current heating bill
 Going solar is an
excellent start for
reducing energy as well
as to saving the planet
 Versatility in almost any climate
 Can reduce dependence on imported fossil fuels,
especially from OPEC
 Has little environmental impacts; only requires
energy from the sun against a solar panel/cell
effectively placed on the roof of a house for the best
energy collection.
 Can give way to new jobs in the production of
different types of solar water heating systems.
 Very long lasting and reduces costs in the long run
 There is five main components of
 There are 3 different types of
an active solar water heater. They
solar collectors for residential
are the collectors, storage tanks,
applications:
backup heating system, circulation
system, and control system
 Flat-plate collector
 Most of the solar water heaters
 Integral collector- storage
require a well-insulated tank. This
systems
two-tank systems preheats the
 Evacuated-tube solar
water before it enters the
conventional water heater.
collectors
 The collector is constructed with an  Then there is two types of
Al box into an all copper absorber
active solar heating systems:
plate, then a low-iron tempered
glass to cover the plate is added to
 Direct circulation systems
create a greenhouse affect that can
 Indirect circulation
deliver high temperatures.
systems
Flat-plate
collector
http://www.scotland.gov.uk/Resource/Img/264789/0076236.jpg
http://www.williams.edu/resources/sustainability/green_buildings/images/closed_loop_hot_water
_diagram.gif
http://www.flasolar.com/active_dhw.htm
The start out cost vary from $4,000 to $8,000 this
depends on the following:
 Size of family to be served
 Size and brand of solar system
 Type of roof
 Building codes
 Orientation of panels
 It’s not always sunny.
 Cold weather.

 The current recession itself prevents most
purchases of solar water heating systems; plus
the start-up costs to implement them in a home
are high, which almost nullifies any tax breaks
put toward it. Low consumer confidence cripples
any thought of purchasing them. There is also a
lack of subsidies; more of those go toward fossil
fuels. There is little public awareness of solar
water heating in homes as well
 There are almost no negative environmental
impacts from this system; all it requires is the
sunlight from the sun to hit the solar cells that
convert that energy to heat so there’s hot water.
However, solar water heating itself cannot stand
alone. It is recommended that there is a back-up
conventional heating system in place in case the
system malfunctions or breaks down. There is also a
low net energy yield for it; since it is preheated and
put into a tank/canister, this has a chance to cool off,
so it’s best used in the early afternoon/evening.
SOLAR WATER HEATER:
FREE energy from the Sun
STANDARD WATER HEATER:
COSTLY gas or electric
Annual operating cost: $50
Annual operating cost: $500+
Storage Capacity: 80-120 gal
Storage Capacity: 40-50 gal
Life expectancy: 15-30 years
Life expectancy: 8-12 years
Lifetime operating cost: $1,000
Lifetime operating cost: $10,000
Does NOT pollute environment
Depletes fossil fuels
Increases equity in your home
No added value to your home
25% return on your investment
No return on utility payments
Protection from future increases
At mercy of utilities/government
Hot water during blackouts!
No hot water during blackouts

http://www.servicemagic.com/article.show.Solar-Heating-Environmentally-Friendly.9762.html

http://www.energysavers.gov/your_home/water_heating/index.cfm/mytopic=12850

http://www.flasolar.com/active_dhw.htm

http://www.amecosolar.com/SOLARWATERFAQ.html

http://www.ehow.com/how-does_4966738_active-solar-heating-system-work.html

http://lsa.colorado.edu/summarystreet/texts/solar.htm

http://www.williams.edu/resources/sustainability/green_buildings/images/closed_loop_hot_water
_diagram.gif