[EnergyPlus_Support] Internal mass& Daylighting

["abeermme" <abeermme@xxxxxxxxx>]

Hi,
I'm running some simulations to investigate the building envelope 
impacts on both internal environment thermal conditions and daylighting.
in a hot dry weather, assuming that natural ventilation can be 
introduced with a set temperature of 22c. ..the space is a simple 
rectangle in plan and section, with one external wall with windows, 
floor area is 185.25squ. m.
Increasing the imnternal mass area from 50  to 500 squ.m.caused cooling 
loads to increase and more surprisingly, also caused daylighting 
illuminance levels to increase!
I cannot find possible reason for both increases, particularly for the 
daylighting change, as I understand that the internal mass is supposed 
to be evenly distributed inside the space and has no geometrical form..
Could you please help interpreting these changes caused by the internal 
mass increase?
Your reply is very needed and highly appreciated.
kind regards
Abeer



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