Re: [EnergyPlus_Support] EMITTANCE

["Michael J. Witte" <mjwitte@xxxxxxxx>]

The two properties are equal to each other since materials absorb and 
emit longwave radiation the same way, and this field is used both 
ways.  Our intent has been to standardize on the term "absorptance".  
Thank you for calling the inconsistency to our attention.

Mike


n 18 Jul 2002, at 10:18, habaza11@xxxxxx wrote:

> Hi; Under regular material IDF example, in the input-output
> reference manual ( page 39)the IDF input has "thermal absorbtance"
> input and under IDF example in page 43 in the same manual, the IDF
> example seams to name the same input as "thermal emittance". could
> you please clairify. H. Abaza 
> 
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