Nominal Operating Cell Temperature

Source: YouTube

Understanding Nominal Operating Cell Temperature (NOCT) in PV Modules

When it comes to photovoltaic (PV) modules, the Nominal Operating Cell Temperature (NOCT) plays a crucial role in determining the performance and efficiency of the solar cells. NOCT is defined as the temperature reached by open-circuited cells in a module under specific conditions.

Factors Affecting NOCT

Several factors influence the NOCT of a PV module, including irradiance on the cell surface, air temperature, wind velocity, and mounting conditions. The NOCT values can vary based on the design and materials used in the module.

Impact of Module Design on NOCT

The design of the PV module, such as the materials used and packing density, can significantly impact the NOCT. For example, modules with rear surfaces designed for better heat exchange may have a lower NOCT compared to modules with higher thermal resistance.

Impact of Mounting Conditions

The mounting conditions of the PV module also play a crucial role in determining the NOCT. Modules mounted in a way that restricts heat exchange with the ambient environment can lead to higher operating temperatures, affecting the overall performance of the solar cells.

Understanding the NOCT of PV modules is essential for predicting their performance in real-world conditions and optimizing their efficiency.

Source: UNT Digital Library – University of North Texas