Radiation Heat Transfer

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View Factor


  • Orientation (or View factor or shape factor) plays an important role in radiation heat transfer.
  • View factor is defined as, "fraction of radiation leaving surface 'i' and strike 'j' ".

Summation Rule (View Factor)

If there is are similar surfaces 'i' and 'j', then:

Blackbody Radiation Exchange

Radiation Exchange between Opaque, Diffuse, Gray surfaces in an Enclosure

1. Opaque

2. Surfaces

3. Two surface enclosure

Radiation Shield

It is used to protect surfaces from radiation act like a reflective surface.

References:

  • Material from Class Lectures + Book named Fundamentals of Heat and Mass Transfer by Theodore L. Bergman + My knowledge. 
  • Photoshoped pics are developed. 
  • Some pics and GIF from Google.  
  • Videos from YouTube (Engineering Sights).

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