High Performing Buildings - Summer 2011 - (Page 25)
n At U r A l g A s , E l E c t r i c i t y c o s t s bEforE, AftEr rEcommissioning
n At U r A l g A s U s E A f t E r , b E f o r E r E c o m m i s s i o n i n g
Restored historic features of the building contrast with modern designs. One example is this intersection of the historic stair with the newly constructed “floating” stair leading to the sixth floor that was added during the renovation.
ElEctricity UsE AftEr, bEforE rEcommissioning
distribution plenum space was not insulated, and this was corrected. An infrared scan of the building envelope identified substantial air leakage around the sashes of the restored 1928 windows on the west elevation. All of these windows were subsequently sealed, resulting in reduced infiltration and improved comfort conditions. The lighting systems were investigated and unnecessary night lighting was eliminated. Lighting control schedules were refined to match actual occupancy. Occupancy sensors in private offices were reset to turn lights off after eight minutes, and additional occupancy sensors were installed in seven conference rooms and offices. The lights and exhaust fan in the elevators were programmed to turn off when the elevator is unoccupied.
Summer 2011 H i g H P e r f o r m i n g B u i l d i n g S
25
Prakash Patel
Table of Contents for the Digital Edition of High Performing Buildings - Summer 2011