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[EnergyPlus_Support] Re:one error in Engineering Ref.



Jia,

Thanks for pointing it out. We will correct the document. The EnergyPlus 
code is fine -

  IF (SkyClearness > 3.0d0) THEN ! Sky is average of clear and clear turbid
    SkyWeight = MIN(1.0d0,(SkyClearness-3.d0)/3.d0)
    ISky1 = 1
    ISky2 = 2
  ELSE IF (SkyClearness > 1.2d0) THEN ! Sky is average of clear turbid 
and intermediate
    SkyWeight = (SkyClearness - 1.2d0)/1.8d0
    ISky1 = 2
    ISky2 = 3
  ELSE ! Sky is average of intermediate and overcast
    SkyWeight = MIN(1.0d0, MAX(0.0d0, (SkyClearness-1.d0)/0.2d0, 
(SkyBrightness-0.05d0)/0.4d0))
    ISky1 = 3
    ISky2 = 4
  END IF

Linda,

This is what Jia found -
a small error in Engineering Reference, page 152 (PDF 191), for S(is,os)
calculation formula, the number *"4"* in the right side of this
formula should be *"0.4".* It took me some time to find this.


Tianzhen


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