Equilibrium thermal characteristics of a building integrated photovoltaic tiled roof

Photovoltaic (PV) modules attain high temperatures when exposed to a combination of high radiation levels and elevated ambient temperatures. The temperature rise can be particularly problematic for fully building integrated PV (BIPV) roof tile systems if back ventilation is restricted. PV laminates...

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Bibliographic Details
Published in:Solar energy 2009-10, Vol.83 (10), p.1893-1901
Main Authors: Mei, L., Infield, D.G., Gottschalg, R., Loveday, D.L., Davies, D., Berry, M.
Format: Article
Language:English
Subjects:
AGING
AMBIENT TEMPERATURE
Applied sciences
Building integration
Buildings
Buildings. Public works
CORRECTIONS
DAMAGE
Electricity generation
ENCAPSULATION
Energy
EQUILIBRIUM
Equipments, installations and applications
ERRORS
EUROPE
Exact sciences and technology
External envelopes
High temperature
Incident radiation
INSOLATION
Modules
Natural energy
OPERATION
Photovoltaic
PHOTOVOLTAIC CELLS
Photovoltaic conversion
PV roof
PV roof tiles
Roof
ROOFS
SKY
SOLAR ARCHITECTURE
Solar cells
SOLAR ENERGY
SOLAR SIMULATORS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
Thermal performance
VENTILATION
Voids
WARRANTIES
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Description
Summary:Photovoltaic (PV) modules attain high temperatures when exposed to a combination of high radiation levels and elevated ambient temperatures. The temperature rise can be particularly problematic for fully building integrated PV (BIPV) roof tile systems if back ventilation is restricted. PV laminates could suffer yield degradation and accelerated aging in these conditions. This paper presents a laboratory based experimental investigation undertaken to determine the potential for high temperature operation in such a BIPV installation. This is achieved by ascertaining the dependence of the PV roof tile temperature on incident radiation and ambient temperature. A theory based correction was developed to account for the unrealistic sky temperature of the solar simulator used in the experiments. The particular PV roof tiles used are warranted up to an operational temperature of 85 °C, anything above this temperature will void the warranty because of potential damage to the integrity of the encapsulation. As a guide for installers, a map of southern Europe has been generated indicating locations where excessive module temperatures might be expected and thus where installation is inadvisable.
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2009.07.002