Journal of Materials / 2013 / Article / Tab 1

Review Article

Simulation of Water Vapor Ingress into PV-Modules under Different Climatic Conditions

Table 1

Calculated activation energies of the diffusion process of water vapor for the materials used in the FEM simulations. The values of the back sheet-materials are effective measured for the layered structure.

MaterialThickness (μm) of diffusion process kJ·mol−1·K−1]

PET-based (back sheet)35039,2
PA-based (back sheet)35054,1
EVA (encapsulant)100035,7

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