In a parametric run the roofing insulation was increased from U= 0.063 to U=0.033. by increasing the thickness of the "Insul Bd 2in (HF-B3)" of the built up roof from 0.28 to 0.64.
In my results the HVAC cooling load increased by 4% and my heating load decreased by 4%. Overall the net change was -1% energy savings.
Is this reasonable?
Any suggestions?
thanks
Cyrus Grimes, LEED(r) AP
