LIGHTING DESIGN
Table 1: Profitability calculation. Comparison calculations – Check efficiency and economy
Lighting and environmental characteristics of the system 1
Lamp Model
2 3 4 5 6 7 8 9
10 11
12 13 14
Lamp nominal luminous flux Reactor model
Reactor technology
Luminous flux factor reactor Luminous flux obtained by lamp Luminaire Model
Obtained light level (illuminance) Environmental area Lamp life
Total quantity of lamps Total number of fixtures
Installed capacity of each lamp (lamps + accessories) Total installed power
Features of use 15 Monthly use time
16 Monthly kWh consumption 17
Equipment costs involved 18 19
Price of each lamp Price of each lamp
20 Price of each accessory per luminaire 21
Project cost + installation 22 Average cost of electricity (kWh price)
Investment costs 23
Installation to equipment costs 24 Difference between the investment costs
Operational costs 25 Cost of energy monthly consumption 26 Average monthly cost of replacement lamps
27 Reduction in the air conditioning system power consumption 28
Sum of operating costs 29 Monthly difference between operating costs
Profitability assessment 30 Return on investment
Comparative installation of consumption data 31
Power density Relative Source: Osram Brazil's Cia Lamps Eletricas.
between the investment cost is minus US$ 15,150.00 and maintenance cost is minus US$ 35.57. The relative power density is 2.4 W/m2
to 100 lux.
Conclusions The study aimed to achieve energy savings, increased electrical energy maintenance intervals, the reduction of air conditioning load and consequently, a noise level reduction. One of the main factors of this research
was to help improve the quality of planning the health facilities. For this we
IFHE DIGEST 2017
mathematically designed a booth for biological material collection to ensure environmental and visual comfort. Rethinking the lighting flux was important because there is a tendancy, due to a lack of investment in lighting design, to utilise artificial light sources which are wrong for the space. We recommend the use of a lighting
sheet – of cost x investment – for new healthcare facilities. The utilisation of new lighting products
was economically feasible. The visual comfort is presented by UGR numbers on
the workbench through supplementary report. The flicker effect was clearly noted. This is caused by fluctuating voltage in a series of regular or irregular variations that results in the visual impression of the changes in the luminous flux of fluorescent lights. Evidence shows that changing the colours and finishes specified could could change this, but the data placed in the software gave a safety margin if there is a replacement of walls, floors and ceilings regarding reflection, refraction and transmission of artificial light source.
Average durability of the lamps in this application
lux m2
hours units units watts kW
hours/month kWh/month months
US$ US$ US$ US$ US$
US$ US$
US$ US$ US$ US$ US$
months (W/m2 for 100 lux) 26.6 lumens
System current
DD18/827 1.366
RSI 2X32-220V Magnetic 0.92 1.257
E4433-218 108 3
8.000 2 2
36 0.07
120 9
67 15.00
120.00 20.00 0.00
0.20 310.00 –130.00 1.73
0.45 n/a 2.18
55.72 –2 10.1 1.81
0.00 55.81
–53.55 180.00
System proposed
LEDS 25W plano 1.769
SKY 2626 Electronic 1.1
1.946
SKY 2626 297 3
25.000 1
3
25,2 0.08
120 9
208 0.00
60.00 0.00 0.00
IFHE 65
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