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8/19/2019 Bipv Report
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BUILDING CONSTRUCTION
REPORT
K.SUSHMA
1130100401.
BUILDING INTEGRATED
PHOTOVOLTAICS
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INTRODUCTION
One of the most promising renewable energy technologies is photovoltaics.
Photovoltaics (PV) is a truly elegant means of producing electricity on site, directly from the sun,
without concern for energy supply or environmental harm.
These solid-state devices simply make electricity out of sunlight, silently with no maintenance,
no pollution, and no depletion of materials.
BUILDING INTEGRATED PHOTOVOLTAICS (BIPV) SYSTEM
Building Integrated Photovoltaics (BIPV) is the integration of photovoltaics
(PV) into the building envelope.
The PV modules serve the dual function of building skin—replacing
conventional building envelope materials—and power generator.
By avoiding the cost of conventional materials, the incremental cost of
photovoltaics is reduced and its life-cycle cost is improved. That is, BIPV systems often have lower overall costs than PV systems
requiring separate, dedicated, mounting systems
Photovoltaics integrated with glazing. PV panels integrated into sun-shading system
APPLICATIONPhotovoltaics may be integrated into many different assemblies within a
building envelope: Solar cells can be incorporated into the façade of a building,
complementing or replacing traditional view or spandrel glass. Often,
these installations are vertical, reducing access to available solar
resources, but the large surface area of buildings can help compensate for
the reduced power.
Photovoltaics may be incorporated into awnings and saw-tooth designs on
a building façade. These increase access to direct sunlight while providing
additional architectural benefits such as passive shading. The use of PV in roofing systems can provide a direct replacement for
batten and seam metal roofing and traditional 3-tab asphalt shingles.
Using PV for skylight systems can be both an economical use of PV and an
exciting design feature.
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BISOL SOLRIF BIPV ROOFING SYSTEM
Solrif pv modules consist of bisol laminates mounted with special solrif profile
frames and sealed watertight.
The profile frames of adjoining modules fit nearly together,thus forming the
water runoff level of the roof.
Measurement BISOL solrif PV module
Framed module 1692*1015
Laying measurements 1674*984
Thickness(mm) 27
Mass(kg) 18.6
Exploded drawing of PV system
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Framed PV modules-front and back
SUBSTRUCTUREThe substructure is the basis of the in-roof mounting
of the modules.it consists of battens and mounting
boards fastened directly to the roof.it is constructed
by means of a grid plan.
MOUNTING CLAMPSBISOL solrif PV modules are braced to the
substructure with mounting clamps which are of 3
different types.
Mounting clamp profile Mounting clamp glass Mounting clamptop/long flat
flashing joints
Often the module surface system,based upon the grid measure of
themodules,does not correspond exactly with measurements of the roof
itself.
in this case,the rest of the roof surface must be integrated into this system by
means of flashing profiles and flashings.
REQUIRED COMPONENTS FOR IN-ROOF MOUNTING
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LOWER SEAM The PV modules can be mounted either directly on the eaves or above the
tiles.
For the crossover from the lower array edge to the tiles,it is normal to use
eaves skirting as for the other in-roof fixtures,such as dormer windows.
The sealing strips are mounted on the eaves skirting in order to closeoff the
roof hollows for small animals and insects.
It is advisable to lay a 17 mm spacing block underneath the mounting clamp“glass” in the lowest row. This is to prevent the back side of the module from
coming into contact with the fold of the mounting clamp by heavy snow load.
MOUNTING
The following tools and other material are required during the mounting process
• Carpenter’s pencil
• String / chalk line
• Tape measure and measuring stick
• Screwdriver set
• Nails for sheet grips
• Hammer for sheet grip nails
• Level
• Wood saw
• Sheet metal shears and tongs
• Knife
• Portable electric screwdriver with T25
bit
• Angle grinder (diamond grinding wheel)
for removing tile nibs
• Multimeter
•Ultraviolet-resistant cable ties
WIRING
Only high voltage cables and ultraviolet and heat resistant solar cables are
permissible for wiring photovoltaic systems.
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Connect the inverter cable to the first module or to the lowest module of the
circuit.
Connect the modules in horizontal circuits with circuit connecting cables and
plugs.
Connect the module circuits by means of the circuit connecting cable (not
included in the delivery).
In case of exposed areas decide on site about the possibility of lightning
protection measures.
Mounting on the Eaves
Fasten the eaves-side skirting on the mounting board (7).
Fasten the first and the last mounting clamps “frame” (3) of the lower
row on to the rafter using two cylinder-head screws (5x35) per clamp.
Line up the two mounting clamps with the chalk line and fasten it.
Align the other lowest row mounting clamps according to the grid plan and
fasten them. Test the clamps for stability.
Apply the channel sealing tape (4).
Inlay the modules.
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Mounting the Modules
In the lowest row of the first column to the right inlay the first photovoltaic
module in the mounting clamp.
Thereby mind that the drainage channels of the frame profile are on the left and
the open lamination edge on the bottom.
Inlay flashing profiles and if necessary flashings on the right with the frameprofiles at the panel edge in the clamp.
Mounting the first module Position of the mounting clamp
Make sure that the mounting clamp “frame” is fit exactly into the slots of the
frame profile (fixed point).
Take another module and take the plug from the first module and put it into
the connecting socket of the next module.
Slide the frame profile of the next module into that of the first one.
Determine the position of the second row of mounting clamps. Mind keeping
15 mm space to the upper edge of the module.
Fasten the second row of mounting clamps to the rafter and test for stability.
Mounting a further module
Spacing the module
clamp to the module
ROOF INTEGRATION ON A TILED ROOF
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ROOF SEAM TOP
Fasten flashing side/top/right.
Fasten the uppermost row of modules with mounting clamps “profile” to the
mounting board and test for stability.
Fit the flashings into the last row of mounting clamps:
Fasten flashing ridge/left above the uppermost left module. Make sure that theflashing overlaps flashing side/top/left.
Fasten flashing ridge/right above the uppermost right module. Make sure that
the flashing overlaps flashing side/top/right.
Fasten flashing ridge/middle above the center modules.
Connect the individual flashings with a join capping piece profile .
Cover the rest of the roof surface with tiles.
Flashing ridge/right Flashing ridge/middle
Placing the join capping piece
profile