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Certificate no. MCS1058

Photovoltaic systems

Renewable Energy Association REAL Scheme Listed

Member of the Renewable Energy Association

Copyright © Apollo

Renewables Ltd 2008,

All Rights Reserved.

APOLLO RENEWABLES LTD

Sustainable energy for this generation and the next

 

SUPPLY  AND  INSTALLATION  OF  SOLAR PHOTOVOLTAIC  AND  WIND TURBINE  SYSTEMS

PV mounting options

PV systems are versatile in the fact that there are many different installation options including:

-     Retrofit installations, installed above an existing roof covering

-     Integrated, using standard modules or frameless modules

-     Integrated, using specialist solar roof tiles

-     Flat roofs using mounting frames or ballast trays

-     Freestanding systems

-     Glass-glass laminates

 

More details on these mounting options are detailed below:

 

Retrofit installations

These are the most common type of installation for existing buildings. Fixings are made onto the roof structure,  which an array mounting system is attached to. There are a wide range of different fixing options to cater for different roof coverings and constructions.

 

Integrated systems using standard or frameless modules

Integrated systems using standard sized modules or unframed modules (called PV laminates) are typically the cheapest way to install an integrated PV array. Modules or laminates are installed onto a number of mounting rails and flashings, and this combination provides a weatherproof covering to replace conventional roofing materials.  

 

Integrated, using solar roof tiles

There are a number of smaller specific PV roof tiles which are available. Whereas these can give an aesthetically pleasing array, there are a couple of drawbacks. Firstly the tiles have a smaller power output, therefore more tiles are needed which increases the number of connections. Secondly they are typically more expensive as they are not as widely available as standard modules or laminates. If you would prefer a system with a particular PV tile, please contact us to see if it is a product we would supply and install.  

 

Flat roofs using mounting frames or ballast trays

There are a couple of simplistic methods of installing photovoltaic modules onto a flat roof. Either a framework can be mounted fixed onto the roof itself or by using the Console method. Consoles are basically recycled plastic trays that are held in place by ballast, which the module are simply fixed onto. The benefit of this type of system is that it is not necessary to make penetrations into the roof to secure the array.

 

Freestanding systems

For clients who do not want to (or are unable to) fix an array to their building, a freestanding array can often be a viable option. This can either be a simple installation such as fixed onto a pergola or other structure, or a tracking system that constantly alters the direction of the array to face the sun to maximise the amount the system generates.

 

Glass-glass laminates

Finally, glass-glass laminates (or solar glazing) can be used to replace standard glazing for locations such as atriums and facades. Cells are sandwiched between two sheets of toughened glass, and the spacing between cells can be varied depending of the clients requirements (i.e. more generation if spaced close together, or more light to enter the building if spaced further apart).

 

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