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The operating temperature plays a central role in the photovoltaic conversion process. Both the electrical efficiency and. hence. the power output of a PV module depend linearly on the operating temperature decreasing with Tc. The numerous correlations for Tc which have appeared in the literature apply to freely mounted PV arrays. to PV thermal collectors. and to BIPV installations. respectively. They involve basic environmental variables. while the numerical parameters are not only material dependent but also system dependent. Thus. one must be careful in applying a particular expression for the operating temperature of a PV module because the available equations have been developed with a specific mounting geometry or building integration level in mind. Therefore. the reader is urged to consult the original sources when seeking a correlation suitable for a particular application.
Key Words:
Solar energy. photovoltaic. temperature coefficient. efficiency
