Technical FAQs 4

What is the output power of PV modules?

The corresponding output power (W) of the PV modules is 7.84, 7.38, 7.13, 6.90, 6.48, 6.04, 5.60, 5.37, and 5.00. It can be observed that the output power was reduced by 36.22 % due to the increment of 50.15 % of the relative humidity.

How long can a PV module be exposed without cleaning?

The PV modules were exposed for 120 days without any manual cleaning and the results showed that the maximum power output dropped by 10.4 % and 4.32 % for monocrystalline and polycrystalline modules, respectively, with the natural dust accumulation.

How long do PV modules last?

Since the large-scale PV plants are often located in remote areas with harsh operating conditions, e.g., lake surfaces and deserts, the PV modules are vulnerable to snow, dust and hail storms. The statistics in Ref. indicate that 2 % of PV modules are predicted to defect about 10 years.

What factors affect the performance of a solar module?

The solar energy is converted into electrical power in PV cells which are the basic units of the module. The performance of PV modules can be affected by various factors, e.g., solar radiation, wind speed, temperature and the covering of the module surface.

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