| Summary: | Building sector has been a part of the huge national energy load in order to
improve the conservation and energy efficiency. In lighting sector, generally a
commercial building produces energy load 20% - 45% of total energy
consumption needed (UNEP, 2006). With that huge energy load, lighting system
must consider its performance factor and visual comfort produced.
This research is to analyze the quality of lighting system at Hotel Novotel
Yogyakarta in function room and lobby with three methods which are numerical
modelling based on SNI of lighting, on-site measurement, and computer
simulation using DiaLux.
From the results of this research,it is concluded that the average illuminance
in function room by numerical calculation is 78.1 lux, by on-site measurement is
72.33 lux, and by simulation is 89 lux, while the SNI�s value quality is 300 lux.
Results of averege illuminance in lobby at night by numerical calculation is 49.05
lux, by on-site measurement 48.02 lux, and by simulation is 70 lux. Based on
these results, we know that the average illuminance of function room and lobby at
night have not managed to meet the visual comfort�s standards of SNI. Average
illuminance in lobby during the day by numerical calculation is 151.3 lux, by onsite
measurement is 91.37 lux, and by simulation is 222 lux. With these results,
it�s known that lobby during the day have managed to meet the visual comfort�s
standards of SNI. Comparative analysis of the three methods shows that numerical
calculation based on SNI performed as the basis of a lighting system design while
computer simulation performed to obtain an optimal calculation and evaluation is
done by on-site measurement.
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