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Photovoltaic construction application

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michael Hultin

on 6 May 2010

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Transcript of Photovoltaic construction application

Photovoltaics Solar Thin-Film Solar Paint Solar Tinting Shingles Flat Roofs a-Si Thin-Film
Output less affected by temperature
Less manufacturing materials used
Lower cost per watt
Good aesthetics for building-integrated applications
Less embodied energy (faster energy payback)
Non-glass substrates possible
More shade tolerant
Applied to many to materials and applications a-Si Thin-Film
Lower efficiency averaging 7%-15%
200 square feet per kilowatt
Lower power per area
Takes months to stabilize output
newer technology that has not been thoroughly tested for longevity
More modules mean higher shipping costs
Lower series-string capacity
Less suitable for battery charging
Requires more combiner boxes
Limited inverter flexibility
Fewer module manufacturer choices The solar shingle can be handled like any other shingle.
It can be palletized, dropped from a roof and walked on.
Each solar shingle is 12" by 86.5"
Nailed over 30 lb felt sheeting like a regular shingle.
Solar shingle system is not cost effective
Aesthetic look of the shingles is the current reason for market.
Better figures on the increased productivity in cloudy and hot conditions will show more benefit.

Two part system of dye-sensitive cells (instead of traditional silicon) and electrolytes

This in chemistry can conduct electricity

When the heat hits the dye it reacts with the electrolytes and generates power. Works Cited In the future,

Whole buildings
Cell phone chargers Predicted conversion rates for these future solar cells is at best 5%.

This is half of thin film and one quarter of crystalline. http://www.google.com/imgres?imgurl=http://www.green-planet-solar-energy.com/
http://www.google.com/imgres?imgurl=http://www.socalofficerealestateblog.com/wp-content/newuploads/2009/02/solar-window-film.jpg Yet, currently no readily available solar paints.
Any claim from a vendor to be selling paint on solar cells must be treated with a very high degree of scepticism as it is almost certainly a scam. Testimonials:

“We’ve had tenants put no lighting in perimeter offices because of that,” notes Herb Gonzalez, a property manager at L&L Holding Co., “We notice a significant heat rise in areas not yet filmed. We find it does cool the building.”

Solar tinting are covering the windows of office buildings around the country

Reducing the temperature inside
Cutting back on cooling costs
Increasing user comfort Some tinting are completely clear while cuting ultraviolet and infrared light.

The reflection reduces 55% of the sun’s heat without affecting the visible spectrum of light.

Earlier versions of this film kept out heat, but created a gloomy environment
The technology is aimed at homes of every economic level, which would bring low-cost energy to every region of the world. On large commercial roofs, you are adding hundreds of new roof penetrations.
Create substaintial amount of more weight to the roof and building structure
This makes the roof harder to maintain and reduces the roof's service life. A roof mounted array systems may void roof warranties.

Roof penetrations are prone to leaks.

US roof manufacturer require the owner to notify the roof system manufacturer of any use changes on the roof.

If an owner adds a PV array system to a roof, they are voiding the roof guarantee if they do not contact the roof manufacturer prior to installing the array. Convential Solar Panels SolarSeal™ elastomeric waterproofing coatings are applied to the concrete, sealing all exposed concrete surfaces.

Flexible thin film photovoltaic modules are embedded into the elastomeric waterproof coating.

Flashed with an additional coating to create a continuous, seamless, and weatherproof surface. The SolarSeal System requires little maintenance; the waterproof coatings can be renewed, effectively extending the SolarSeal System service life to 25-30 years or more.

SolarSeal PV Concrete Systems are not affected by adverse weather conditions such as windstorms, hurricanes or hail. One of the
main advantages to amorphous silicon is that it can be
directly deposited on glass or even plastic, allowing it to be
manufactured in long, continuous rolls, or incorporated onto
a flexible substrate, such as laminates, shingles, and roofing
tiles—even backpacks. The appearance of amorphous silicon
also tends to be more uniform. Because of the uniform color,
thin-film products appeal to those with a major concern
for aesthetics—architects, designers, and end users—for
streamlined building-integrated applications.
PV Laminates combine very thin film and stainless steel foil, perfect for use in building materials.
PV film has been around since the early 1970’s, but it’s rate of evolution and range of use has continued to increase sharply over the past decade. New thin film PV roofing systems bypass the attachment of photovoltaics to the roof by doubling as roofing materials.

Solar shingles offer a way to utilize the space of your roof to produce free energy. Flexible solar cell roof shingles bend and curve to blend with roof tiles.
Manufacturing techniques use a special ink to print semiconductors.
With a low manufacturing cost solar shingles, aim to overtake the market by offering better efficiency, low cost, and longevity. Thin Film Solar Shingles offer Solution to Global Warming
Florida | Posted on March 7th, 2010http://www.nanotech-now.com/news.cgi?story_id=37092

Thin-film Photovoltaic (PV) Roof Laminates
November 23, 2009 | Posted by Jay

Creating New Application Solutions for Building Integrated Photovoltaics (BIPV) Michael Gumm, President http://www.altenergymag.com/emagazine.php?article=solarseal&issue_number=07.10.01

Thin film vs. monocrystalline panels in grid connect systems

Thin Film Could Soon Make Solar Glass and Facades a Practical Power Source http://energypriorities.com/entries/2006/05/xsunx_power_glass_bipv.php

Acurlite completes SageGlass photovoltaic system at 100 W. Putman http://nerej.com/33892 Crystalline silicon is a thousand times thicker, requiring more silicon.

It must be deposited on a rigid substrate that can withstand high manufacturing temperatures. A tarp and aging skylight were replaced with a photovoltaic powered system featuring SageGlass products.

Its a 14-inch strip installed on the exterior along the bottom of the skylight to power the glass, while remaining invisible to the people inside.
This system provides a constant intermediate state of tinting, allowing a range of 3.5% to 62% visible light into the building. Producers foresee thin-film solar panels reaching $.80/watt in five years, and $.50/watt in 10 years.

DOW has projected the solar shingle sales will generate $11 billion of revenue in 2020. Paint requires at least two layers.

One layer absorbs the sun's energy and releases electrons into the electricity supply.

The second layer to reabsorb the electrons once they have passed through the circuit. The payback period on solar films varies by region.
In the West, payback can range from six months to three years.
There is promise of a lower cost per-watt or per-foot basis.

Window films may qualify for the 2008 Emergency Economic Stabilization Act which allows tax credits for homeowners according to the International Window Film Association (IWFA) Crystalline silicon How Solar Works
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