Page 55 - GRIHA Manual Volume III - Introduction to National Rating System
P. 55
48 GRIHA Manual: Volume 3
Step 10 Redesign the lighting system: Again, define high-efficacy luminaire, whose lumen output is
2900 lm and calculate the number of luminaries as discussed earlier. The illumination levels
achieved in this case was 314 lux.
Figure 32 Software snapshot showing eficient lighting system
Step 11 Calculate lighting power density: As discussed in step 7, the LPD achieved in this case was 6.2
W/m , which is less than the recommended lighting power density by ECBC-2007.
2
Therefore, the proposed lighting scheme is effective and energy-efficient.
Step 10 Redesign the lighting system: Again, define high-efficacy luminaire, whose lumen output is
2900 lm and calculate the number of luminaries as discussed earlier. The illumination levels
achieved in this case was 314 lux.
Figure 32 Software snapshot showing eficient lighting system
Step 11 Calculate lighting power density: As discussed in step 7, the LPD achieved in this case was 6.2
W/m , which is less than the recommended lighting power density by ECBC-2007.
2
Therefore, the proposed lighting scheme is effective and energy-efficient.
