bipv report

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

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