ASK THE EXPERT SESSION Michael Ziloudis Solar PV Specialist.
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Transcript of ASK THE EXPERT SESSION Michael Ziloudis Solar PV Specialist.
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ASK THE EXPERT SESSION
Michael Ziloudis
Solar PV Specialist
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Michael Ziloudis
Involved in PV since 2001
MSc in Renewable Energy & Environment
Design Engineer and Project Manager - Solarcentury
Advisor to large multinationals UK, Europe and SA
From small Domestic to 90MWp Commercial
Building-Integrated and Ground-Mounted
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A FEW ISSUES TO PROVOKE QUESTIONS
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ORIENTATION
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MODULE POWER RATING!
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SIMULATION SOFTWARE
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•SAM
•GOOGLE EARTH
•SKETCH UP
•SOLID EDGE
FREE SOFTWARE
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Case study – Domestic House Retrofit
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CORRECTLY MATCH THE INVERTER TO THE MODULES
•Often done incorrectly
•Understand inverter types
•Use software that allows you to view the best fit
•Understand the inverter limitations
•Check under voltages as well as over voltages
•Make sure inverter operates at highest efficiency
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CALCULATE SHADING LOSSES
•Unmanaged shading can have a dramatic effect on yield
•Regular shading can lead to hot spots and diode failure
•Orientation of modules is important
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AVOID MISMATCH LOSSES
•Module mismatch can come from orientation, shading and from a range of power levels or voltages
•Inverter choice can mitigate
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SITE THE INVERTER IN A SUITABLE PLACE
•Loft spaces suffer from swings in temperature
•Garages often require DC cable runs through house
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ALWAYS CHECK WIND LOADING
•Know your wind-loading calculations and work-out required roof fixings and edge constraints
•Understand differences for topography and roof height
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It doesn’t happen very often but when it does it can be serious!
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Wind Loading Course
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Modules in Edge zones in dark blue and corner zones in beige
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Roof Zones pitched roofs with gable ends
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PRk = characteristic load bearing capacity in kN
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Hangar Bolt Use
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Slate Roof Solution
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What else is out there?
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Thank You
First UK UKAS Accredited Test Centre for PV
Consultancy and Training