Introduction to radiation and radiation properties
After completing the reading, exercises, and the associated homework you should be able to:
Explain the ways in which radiation heat transfer is different than conduction and convection
Explain how thermal radiation differs from other forms of E-M radiation
Identify the wavelengths of the E-M spectrum for which thermal radiation is the dominant form of radiation
Define a blackbody
Define emissive power and give its dimensions along with a set of typical units
Define the terms spectral and spectral emissive power
Sketch spectral blackbody emissive power as a function of wavelength with temperature shown as a parameter
Find the fraction of emissive power emitted by a blackbody over a specified wavelength range using the black body radiation function
Define the terms
spectral emissivity,
directional emissivity,
hemispherical emissivity,
total/total hemispherical emissivity,
absorptivity,
solar absorptivity,
reflectivity,
transmissivity,
irradiation,
and opaque
Relate the above mentioned properties to each other
Use Kirchoff's law to relate absorptivity and emissivity to each other
Calculate the net radiation from a surface subject to solar radiation
Note: Any term in bold is a key vocabulary term that you should be able to define, regardless of whether or not that is the specific learning objective.