The thermal radiation efficiency of tungsten wire can be measured by the following steps:
- Preparation stage
Select appropriate measuring instruments:
The measurement of thermal radiation requires high-precision instruments and equipment. Commonly used instruments include infrared thermal imagers, radiometers, spectrometers, etc.
Infrared thermal imagers are used to measure infrared radiation on the surface of objects and generate thermal images, which helps to intuitively understand the thermal radiation distribution of tungsten wires.
Radiometer is used to directly measure the radiation intensity and is a key tool for evaluating thermal radiation efficiency.
Spectrometer can be used to measure the radiation wavelength and spectral characteristics, and further analyze the thermal radiation characteristics of tungsten wire.
Ensure the measurement environment is stable:
During measurement, the ambient temperature, humidity and other conditions should be ensured to be stable to avoid the influence of external factors on the measurement results.
At the same time, other heat sources or interference factors in the measurement area should be eliminated to ensure the accuracy of the measurement results.
- Measurement steps
Set the measurement parameters:
According to the characteristics of the tungsten wire and the measurement requirements, set the measurement parameters of the infrared thermal imager, radiometer and other instruments, such as the measurement range, resolution, sensitivity, etc.
Heat the tungsten wire to a stable state:
Use an appropriate heating device to heat the tungsten wire to a predetermined high temperature state and keep it for a period of time to ensure that it reaches thermal stability.
Measure thermal radiation data:
After the tungsten wire reaches thermal stability, use an infrared thermal imager to record the infrared radiation image of its surface, and use a radiometer to measure its radiation intensity.
At the same time, a spectrometer can be used to measure the thermal radiation spectral characteristics of the tungsten wire to obtain more detailed information.
Calculate thermal radiation efficiency:
Based on the measured radiation intensity and the electrical power input of the tungsten wire, the thermal radiation efficiency of the tungsten wire can be calculated. Thermal radiation efficiency is usually expressed as the ratio of radiation energy to input electrical power.
- Precautions
Instrument calibration:
Before measurement, the instrument used should be calibrated to ensure the accuracy of its measurement results.
Repeated measurement:
In order to improve the reliability of the measurement results, multiple repeated measurements can be performed and the average value can be taken as the final result.
Safety protection:
When performing high-temperature measurements, necessary safety protection measures should be taken, such as wearing protective glasses and gloves, to ensure the safety of the operator.
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