Projection factor (PF)

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Definition

  • The ratio of the horizontal depth of the external shading projection divided by the sum of the height of the fenestration and the distance from the top of the fenestration to the bottom of the farthest point of the external shading projection, in consistent units.[1][2][3]

References

  1. ASHRAE Technical Committee (TC) 1.6, Terminology
  2. Standard 90.1-2010 SI
  3. Standard 90.1-2010 I-P
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