英語翻譯
9.2° FLOOR – CONFERENCE ROOM
9.1 CALCULATIONS REVIEW
The lighting review shows higher lighting levels than the Dragon International design,as
indicated in the premises.
In this case the values are too higher (three times higher) so it is reasonable to think that there
was some dimming percentage or some changes in lamps,due to specific design criteria,not
indicated in the available documentation.
The medium lighting level on the working surface (Em) is:1274 Lx in the Telmotor review
and 395 Lx in Dragon International design.
The Telmotor review uses the same lighting fixtures of the Dragon International design,with
the same accessories,same quantities and the same photometric data with the exception of the
fixtures inside the cave of the ceiling for what it was impossible to find the photometric data
for Dialux,the review was done with OSRAM fixtures with same photometric data as
indicated in the data sheet included in the Dragon International design.
In the Dragon International design,in some ERCO fixtures,the luminous flux was manually
modified,indeed the 22463010 model has 50W lamps with 36° reflector.The original
photometric data given by ERCO shows a flux value of 1200 Lm instead of the one inserted
in Dragon International design that is 900 Lm.
As indicated in the premises,this can be for less efficient lamps or for a dimming percentage
manually inserted in the calculation.
The Dragon International design and the Telmotor review consider part of the conference
room.
In the drawings available the central squares on the ceiling are 110cm wide,the 28W lamps
employed are 114,4cm; seems to be a design error that can be correct with a change of lamps
power at 21W with the same lamps model.In this case the lamps dimension is 84,9cm.