What Is a Pyranometer?
A pyranometer is a specialized instrument designed to measure solar radiation flux density (W/m²) from a hemispherical field of view. It is widely used in meteorology, climatology, solar energy systems, and agricultural research to assess sunlight intensity and availability.
How Does It Work?
Pyranometers operate based on the thermoelectric principle, where solar radiation is absorbed by a blackened surface, generating a voltage proportional to the irradiance. This data helps in evaluating solar resource potential and optimizing renewable energy setups.
Applications and Importance
From monitoring photovoltaic panel efficiency to supporting climate studies, accurate solar radiation measurement is crucial. Industries rely on pyranometers for data-driven decisions in energy production and environmental analysis.
Frequently Asked Questions
What is the difference between a pyranometer and a pyrheliometer?
While a pyranometer measures global solar radiation, a pyrheliometer assesses direct beam radiation alone, using a narrow field of view.
How often should pyranometers be calibrated?
Annual calibration is recommended to maintain accuracy, especially in high-precision applications like scientific research.
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