1. Republic of the Philippines
BILIRAN PROVINCE STATE UNIVERSITY
Naval, Biliran
NEW TECHNOLOGY BUILDING ROOM 308
LIGHTING AUDIT
PREPARED BY:
CANOBAR JR JAY N., BSEE IV-A STUDENT
NIERRAS CHRIS JOY, BSEE IV-A STUDENT
ENGR. JUDE THADDEUS D . BANICO
INSTRUCTOR
2. INTRODUCTION
Every place needs lighting since it affects both the aesthetics and
functionality of the space. We will carefully examine the current
lighting systems throughout this audit with the aim of enhancing
illumination, energy efficiency, and the overall user experience. Our
lighting audit will offer crucial insights and ideas to assist us realize
our goals, whether you want to increase office productivity, foster an
inviting ambiance in a retail setting, or save money on energy.
3. Lighting audit objectives
1. Determine the condition, age, and performance of the current lighting infrastructure
by inspecting its fixtures and bulbs.
2. Determine the potential cost savings from reduced energy use, maintenance costs,
and replacement costs as a result of lighting changes.
3. Increase lighting aesthetics, reduce glare, and create a comfortable environment to
enhance tenants' or customers' overall experience.
4. Give a thorough cost-benefit analysis that details the required initial investment as
well as the (ROI) over time.
5. Have recommendations and conclusion.
5. Materials used in the audit:
Tape measure
Lux-meter
CALCULATOR
PAPER & BALLPEN
LAPTOP
Steps in gathering data:
Get the dimension of the room in meters.
Get the type of fixture used in the room.
Tabulate the gathered data.
Get the room indices, Installed Load Efficacy Ratio (ILER)
and other factors that affects the illumination of the room.
6. BRIEF COMPANY PROFILE:
Room 308 is located at New technology building in Biliran Province State
University HC72+9G7, P.I, P. Inocentes St, Naval, 6543 Biliran. where the
president is Dr. Victor C. Canezo Jr. The stablishment was built on October
2020.
8. LUMINAIRE SPECIFICATIONS:
NOTE: AVERAGE WATTAGE PER LAMP IS 18 WATTS & AVERAGE OUTPUT LUMEN PER LAMP IS 1500 LUMENS RESPECTIVELY.
SOURCE: ECOLUM PRICE LIST ( JANUARY 2018 PRICE LIST )
LOCATION LIGHTING
DEVICE
RATING
(WATTS)
LUMEN
OUTPUT
LIGHT OUTPUT
WIDE
VOLTAGE
DIMENSIONS LIFE HOURS
SUGGESTED
RETAIL PRICE
(S.R.P.)
(JANUARY
2018 PRICE
LIST)
(ECOLUM LED)
Room 308 is
located at N.T.B.
in Biliran
Province State
University
HC72+9G7, P.I, P.
Inocentes St,
Naval, 6543
Biliran.
ECOLUM LED
CFS01T8DL18
(LED T8 TUBE)
18W 1500 DAYLIGHT 100-240V 25.4 x 600 10,000 HOURS PHP 190
10. RECOMMENDEDDESIGNILLUMINANCE LEVELS
TASK
DAY TIME NIGHT TIME
APPLICATIONS
SOURCE: GUIDELINES FOR ENERGY CONSERVING DESIGN OF BUILDINGS.DOE,2008 (BASED ON ESNA LIGHTING HANDBOOK)
MINIMUM (LUX) MAXIMUM (LUX)
359 363
MINIMUM (LUX) MAXIMUM (LUX)
328 339
Lighting for working
interiors and activity
Interior
Classrooms General
11. TABLE 10.4 IES ILLUMINANCE CATEGORIES AND VALUES - FOR GENERIC INDOOR ACTIVITIES
ACTIVITY CATEGORY LUX FOOTCANDLES
Public spaces with dark surroundings A 20-30-50 2-3-5
Simple orientation for short temporary
visits
B 50-75-100 5-7.5-10
Working spaces where visual tasks are
only occasionally performed
C 100-150-200 5-7.5-10
Performance of visual tasks of high
contrast or large size
D 200-300-500 20-30-50
Performance of visual tasks of medium
contrast or small size
E 500-750-1000 50-75-100
Performance of visual tasks of low
contrast or very small size
F 1000-1500-2000 100-150-200
Performance of visual tasks of low
contrast or very small size over a
prolonged period
G 2000-3000-5000 200-300-500
Performance of very prolonged and
exacting visual tasks
H 5000-7500-10000 500-750-1000
Performance of very prolonged and
exacting visual tasks
I 10000-15000-20000 1000-1500-2000
SOURCE: BUREAU OF ENERGY EFFICIENCY
12. ROOM INDEX
COMMERCIAL LIGHTING
(OFFICES RETAILS & STORES
ETC) & VERY CLEAN
INDUSTRIAL APPLICATIONS.
STANDARD OR GOOD COLOR
RENDERING. Ra: 40-85
INDUSTRIAL LIGHTING
(MANUFACTURING AREAS,
WORKSHOP, WAREHOUSING
ETC.) STANDARD OR GOOD
COLOR RENDERING.
Ra: 40-85
INDUSTRIAL LIGHTING
INSTALLATIONS WHERE
STANDARD OR GOOD COLOR
RENDERING IS NOT
ESSENTIAL BUT COLOR
DISCRIMINATION IS
REQUIRED. Ra: 20-40
5 53(1.89) 49(2.04) 67(1.49)
4 52(1.92) 48(2.08) 66(1.52)
3 50(2.00) 46(2.17) 65(1.54)
2.5 48(2.08) 44(2.27) 64(1.56)
2 46(2.17) 42(2.38) 61(1.64)
1.5 43(2.33) 39(2.56) 58(1.72)
1.25 40(2.50) 36(2.78) 55(1.82)
1 36(2.78) 33(3.03) 52(1.92)
TARGET LUX/W/SQ.M(W/SQ.M/100LUX) VALUES FOR MAINTINED ILLUMINANCE ON HORIZONTAL PLANE FOR
ALL ROOM INDICES AND APPLICATIONS:
SOURCE : BUREAU OF ENERGY EFFICIENCY; RA COLOUR RENDERING INDEX
Reflectance factor table
13. Measured illumination, RCR & roomindex
ROOM
MEASURED ILLUMINATION
AVERAGE ILLUMINATION
(LUX)
ROOM INDEX
1. N.T.B. ROOM 308 347.25 lux 2.025
DAYTIME NIGHTTIME
361 lux 333.5 lux
RCR HCC HFC
2.47 0 1.23
NOTE: BASED ON OUR CALCULATION WITH STANDARD FORMULA.
14. INDICATORS OF PERFORMANCE
INSTALLED LOAD EFFICACY RATIO (ILER) ASSESSMENT
0.75 OR OVER SATISFACTORY TO GOOD
0.51 – 0.74 REVIEW SUGGESTED
0.5 or Less URGENT ACTION REQUIRED
SOURCE: BUREAU OF ENERGY EFFICIENCY
15. ROOM AREA
ROOM TOTAL
WATTAGE
WATT PER
SQ.M
AVERAGE
ILLUMINATION
(LUX)
ACTUAL LUX
PER WATT PER
SQ. M
TARGET LUX
PER WATT PER
SQ. M RA: 40-
80
ILER REMARKS
N.T.B. ROOM
308
65.6 SQ.M 216 3.3 W 347.25 105.23 99.82 1.05 SATISFACTORY
TO GOOD
COMPUTED ILER
NOTE: BASED ON OUR CALCULATION WITH STANDARD FORMULA.
SOURCE: BUREAU OF ENERGY EFFICIENCY.
16. ENERGYCONSUMPTIONS
ROOM WATTS
OPERATING HOURS
PER DAY
KWH PER DAY OF
OPERATION
KWH PER WEEK OF
OPERATION
KWH PER MONTH
OF OPERATION
WATT-HOUR PER
YEAR OF
OPERATION
N.T.B. ROOM
308
216 W 12 HOURS 2.592 KWH 10.368 KWH 41.472 KWH 414.72 KWH
ROOM WATTS
OPERATING HOURS
PER DAY
KWH PER DAY OF
OPERATION
(COST)
KWH PER WEEK OF
OPERATION
(COST)
KWH PER MONTH OF
OPERATION
(COST)
KWH PER YEAR OF
OPERATION
(COST)
N.T.B. ROOM
308
216 W 12 HOURS Php 36.12 KWH Php 144.46 KWH Php 577.85 KWH Php 5778.54 KWH
NOTE: BASED ON OUR CALCULATION WITH STANDARD FORMULA.
17. COST per kWh Basis: assume 15 PHP per kwh
ROOM TOTAL WATTAGE
COST PER DAY OF
OPERATION (PHP)
COST PER WEEK
OF OPERATION
(PHP)
COST PER MONTH
OF OPERATION
(PHP)
COST PER YEAR OF
OPERATION (PHP)
COST
THROUGHOUT ITS
LIFEHOUR (PHP)
N.T.B. ROOM 308 216 W Php 36.12 KWH Php 144.46 KWH Php 577.85 KWH Php 5778.54 KWH 30094.64
TOTAL 216 W Php 36.12 Php 144.46 KWH Php577.85 KWH Php 5778.54 KWH 30094.64
Total cost: PHP 30094.64 cost throughout life span of the lamps used.
18. CALCULATIONs FOR THE SPACING OF LUMINAIRE’S
LUMINAIRE DISTANCE IN LENGTH:
= LENGTH/NUMBERS OF LUMINAIRES IN LENGTH
= 8.2/3
= 2.74m
LUMINAIRE DISTANCE IN WIDTH:
= WIDTH/NUMBERS OF LUMINAIRES IN WIDTH
= 8/2
= 4m
WALL DISTANCE IN LENGTH: ( ROOM LENGTH: 8.2m)
= 2x =8.2 – 5.46
= 2x/2 = 2.73/2
x = 1.37m
WALL DISTANCE IN WIDTH: ( ROOM WIDTH: 8m)
= 2x =8 – 4
= 2x/2 = 4/2
x = 2m
19. CALCULATIONS
EXISTINGLUMINAIRE
= (18W x 12 LUMINAIRES) = 216 WATTS
= (216W x 12 HOURS) = 2592 W
= (2592 W x 1 DAY) = 2592 W/DAY
= 2592/1000 = 2.592 KWH
= (2.592 KWH x 13.9336 KWH)
= PHP 36.12 KWH OF ELECTRICITY PER DAY
= (18W x 12 LUMINAIRES) = 216 WATTS
= (216W x 12 HOURS) = 2592 W
= (2592 W x 4 DAYS) = 10368 W/WEEK
= 10368/1000 = 10.368 KWH
= (10.368 KWH x 13.9336 KWH)
= PHP 144.46 KWH OF ELECTRICITY PER WEEK
= (18W x 12 LUMINAIRES) = 216 WATTS
= (216W x 12 HOURS) = 2592 W
= (2592 W x 16 DAY) = 41472 W/MONTH
= 41472/1000 = 41.472 KWH
= (41.472 KWH x 13.9336 KWH)
= PHP 577.85 KWH OF ELECTRICITY PER MONTH
= (18W x 12 LUMINAIRES) = 216 WATTS
= (216W x 12 HOURS) = 2592 W
= (2592 W x 16 DAY) = 41472 W/DAY
= 41472/1000 = 41.472 KWH
= (41.472 KWH x 10 MONTHS)
= 414.72 KWH
= (414.72 KWH x 13.9336)
= PHP 5778.54 KWH OF ELECTRICITY PER YEAR
20. CALCULATIONFOR COST THROUGHOUT ITS LIFEHOUR (PHP),
FOR THE EXISTINGTUBULAR LED LAMP
= (12 HOURS x 16 DAYS IN A MONTH)
= 192 HOURS IN A MONTH
= (192 HOURS x 10 MONTHS)
= 1920 HOURS ANNUAL
FOR MULTIPLIER
= 10000 HOURS/1920
= 5.208 YEARS
= (PHP 5778.54 KWH x 5.208 YEARS)
COST THROUGHOUT ITS LIFEHOUR (PHP) = 30094.64
21. RoomIndex (RI)
NEW TECHNOLOGY BUILDING ROOM 308: (8 WIDTH X 8.2 LENGTH) = 65.6SQ.M
LENGTH = 8.2 METERS
WIDTH = 8 METERS
CEILING HEIGHT = 2.6 METERS
HEIGHT OF LUMINAIRES ABOVE WORKING PLANE (MH)= 2.6 C.H. – 0.6 W.P. = 2 METERS
CALCULATE ROOM INDEX (RI) = ( L X W ) / (MH)( L + W )
= ( 8.2 X 8) / (2)( 8.2 + 8)
ROOM INDEX = 2.025
22. NEW TECHNOLOGY BUILDING ROOM 308 : (8 WIDTH X 8.2 LENGTH) = 65.6 SQM
ROOM LENGTH: 8.2 METERS
ROOM WIDTH: 8 METERS
ROOM HEIGHT: 3 METERS
WORKING PLANE: 0.6 METERS
MOUNTING HEIGHT: (ROOM HEIGHT – WORKING PLANE) = (2.6 M - 0.6 M)= 2 METERS
RCR = 5HRC (L + W)/LW
= 5 (2) (8.2 + 8)/(8.2) (8)
= 2.47
NOTE: 2.6 C.H. MINUS TO THE 0.6 WORKING PLANE,
THAT’S WHY THE HRC IS 2.
CCR = 5HCC (L + W)/LW
= 5 (0) (8.2 + 8)/(8.2)(8)
= 0
NOTE: LIGHT FIXTURE IS RECESSED, THAT’S WHY THE HCC IS 0.
Calculation for rcr, ccr fcr
FCR = 5FC (L + W)/LW
= 5 (0.6) (8.2 + 8)/(8.2) (8)
= 0.74
25. FINDINGS
TUBULAR LED LAMP WITH LIGHT FIXTURE IS IN THE ROOM.
THE TYPE, MOUNTING, AND SPACING OF THE LAMPS ARE ALL CONSISTENT, CALCULATED AND IT FOLLOWS
STANDARDS.
THE REFLECTANCES OF THE WALL PAINT, CEILING, FLOOR, AND WINDOW SPACING FALL INTO THE
SATISFACTORY CATEGORY.
THE ROOM'S ILLUMINATION LEVEL SUFFICIENTLY ILLUMINATES THE AREAS NEEDED FOR THE TASK ASSIGNED
FOR CLASSROOMS IN GENERAL.
DIRTY WHITE, WHICH IS IN THE FAIR CATEGORY, IS THE COLOR OF THE WALL.
BECAUSE OF ITS DIRTY WHITE COLOR AND SMOOTH TEXTURE, THE CEILING'S REFLECTANCE OF LIGHT IS
GOOD.
26. COMPARINGTHE SPECIFICATIONSOF T8 LEDFLUORESCENTTUBES
TECHNICAL
SPECIFICATIONS
FIREFLY BASIC SERIES ECOLUM LED FIREFLY PRO SERIES LINEAR FLOURESCENT
TUBE
LED TUBE LIGHT
WATTAGE 20 W 18 W 16 W 18 W 16 W
VOLTAGE AC 100 – 240V AC 100 – 240 V AC 220 – 240 V AC 220 – 240 V AC 85 – 265 V
LIFE HOURS 25,000 HOURS 10,000 HOURS 15,000 HOURS 20,000 HOURS 50,000 HOURS
LUMENS 1800 1,500 1650 1300 1600
KELVIN 6,500 K 6,500 K 6,500 K 6,500 K 6000 – 6500 K
COLOR DAYLIGHT DAYLIGHT DAYLIGHT DAYLIGHT DAYLIGHT
BEAM ANGLE 110 DEGREES 200 DEGREES 200 DEGREES 360 DEGREES 120 DEGREES
DIMMABLE NO NO NO YES NO
LAMP BASE G13 G13 G13 G13 G13
SRP PHP 475 PHP 190 PHP 180 PHP 323.28 PHP 203
T5 EBTST5DL20 CFSO1T8DL18 FL EFSO6T8DL16
TL – D SUPER 80 18W – 865
DAYLIGHT T8 ITL-16W-DL-011
27. TYPE
FIREFLY BASIC
SERIES
ECOLUM LED FIREFLY PRO SERIES LINEAR
FLOURESCENT
TUBE
LED TUBE LIGHT
LIFETIME 15,000 HOURS 10,000 HOURS 15000 HOURS 20,000 HOURS 50,000
WATTAGE 20 W 18 W 16 W 18 W 16 W
ELECTRIC CHARGE PHP 13.9336/KWH PHP 13.9336/KWH PHP 13.9336/KWH PHP 13.9336/KWH PHP 13.9336/KWH
OPERATING HOURS 12 HOURS/DAY 12 HOURS/DAY 12 HOURS/DAY 12 HOURS/DAY 12 HOURS/DAY
ELECTRICITY CHARGE
PER DAY
PHP 3.34 KWH PHP 2.592 KWH PHP 2.304 KWH PHP 3 PHP 2.304 KWH
MONTHLY
ELECTRICITY CHARGE
PHP 3.34 X 16 DAYS
= 53.44 KWH
PHP 2.592 X 16 DAYS
= 41.472 KWH
PHP 2.304 X 16 DAYS
= 36.864 KWH
PHP 3 X 16 DAYS
= 48 KWH
PHP 2.304 X 16 DAYS
= 36.864 KWH
1 YEAR ELECTRICITY
CHARGE
PHP 3.34 X 160 DAYS
= 534.4 KWH
PHP 2.592 X 160 DAYS
= 414.72 KWH
PHP 2.304 X 160 DAYS
= 368.64 KWH
PHP 3 X 160 DAYS
= 480 KWH
HP 2.304 X 160 DAYS
= 368.64 KWH
YEARLY SAVINGS 267.2 207.36 184.32 240 184.32
PRICE 475 190 180 323.28 203
ROI 1.8 YEARS 1.1 YEARS 1.0 YEARS 1.3 YEARS 1.1 YEARS
Return of investment (ROI)
T5 EBTST5DL20 CFSO1T8DL18 FL EFSO6T8DL16 T8 ITL-16W-DL-011
TL – D SUPER 80 18W – 865
DAYLIGHT
SOURCE: BUREAU OF ENERGY EFFICIENCY
28. LAMP EFFICACY
LAMP TYPES LUMENS WATTS EFFICACY (lm/W)
T5 EBTST5DL20 1800 20 90 Im/W
CFSO1T8DL18 1500 18 83.33 Im/W
FL LFS06T8DL18 1650 16 103.13 Im/W
TL – D SUPER 80 18W – 865
DAYLIGHT
1300 18 72.22 Im/W
T8 ITL-16W-DL-011 1600 16 100 Im/W
SOURCE: BUREAU OF ENERGY EFFICIENCY
29. WE CONCLUDE THAT, IT'S CRITICAL TO TAKE INTO
ACCOUNT ASPECTS LIKE ENERGY EFFICIENCY,
BRIGHTNESS, LONGEVITY, AND ENVIRONMENTAL
IMPACT WHEN EVALUATING LIGHT BULBS. THE DECISION
BETWEEN THE LIGHT BULBS ULTIMATELY COMES DOWN
TO OUR OWN REQUIREMENTS AND OBJECTIVES. MAKING
AN EDUCATED CHOICE FOR OUR LIGHTING
REQUIREMENTS WILL BE MADE EASIER WITH CAREFUL
CONSIDERATION OF THESE ELEMENTS.
Conclusion
30. RECOMMENDATIONS
MAINTAIN AND DO A MONTHLY CHECKUP, SPECIALLY FOR CLEANING.
IF NOT IN USE, SWITCH OFF THE LIGHTS.
BE AWARE THAT INCREASED LAMP EFFICACY RESULTS IN GREATER SAVINGS FOR
LIGHTS WITH SIMILAR OUTPUT.
IF THE LIGHTING IN THAT PARTICULAR ROOM IS SUFFICIENT FOR YOUR NEEDS, DO
NOT USE THE LAMP OR TURN IT OFF.
TO PRESERVE ILLUMINATION, REPLACE ALL LAMPS EVERY FIVE YEARS FOR THE
EXISTING TUBULAR LED LAMP WITH LIGHT FIXTURE IN THE ROOM.
WE RECOMMEND FIREFLY PRO SERIES (FL EFSO6T8DL16) AND LED TUBE LIGHT
(T8 ITL-16W-DL-011) FOR THE REPLACEMENT OF THE EXISTING TUBULAR LED LAMP,
IN A YEAR'S IT BURNS OUT.
31. RECOMMENDEDLUMINAIRE’S
TECHNICAL SPECIFICATIONS
FIREFLY PRO SERIES LED TUBE LIGHT
FL EFSO6T8DL16 T8 ITL-16W-DL-011
WATTAGE 16 W 16 W
VOLTAGE AC 220 – 240 V AC 85 – 265 V
LIFE HOURS 15,000 HOURS 50,000 HOURS
LUMENS 1650 1600
KELVIN 6,500 K 6000 – 6500 K
COLOR DAYLIGHT DAYLIGHT
BEAM ANGLE 200 DEGREES 120 DEGREES
EFFICACY (lm/W) 103.13 Im/W 100 Im/W
DIMMABLE NO NO
LAMP BASE G13 G13
SRP PHP 180 PHP 203
SOURCE: BUREAU OF ENERGY EFFICIENCY
32. Rec. 1 CALCULATIONFOR COSTTHROUGHOUTITS LIFEHOUR (PHP), FOR FIREFLY PRO
SERIES(FL EFSO6T8DL16).
= (12 HOURS x 16 DAYS IN A MONTH)
= 192 HOURS IN A MONTH
= (192 HOURS x 10 MONTHS)
= 1920 HOURS ANNUAL
FOR MULTIPLIER
= 15,000 HOURS/1920
= 7.8 YEARS
= (PHP 5136.48 KWH x 7.8 YEARS)
COST THROUGHOUT ITS LIFEHOUR (PHP) = 40064.544
= (16W x 12 LUMINAIRES) = 192 WATTS
= (192W x 12 HOURS) = 2304 W
= (2304 W x 16 DAY) = 36864 W/DAY
= 36864/1000 = 36.864 KWH
= (36.864 KWH x 10 MONTHS)
= 368.64 KWH
= (368.64 KWH x 13.9336)
= PHP 5136.48 KWH OF ELECTRICITY PER YEAR
33. Rec 2. CALCULATIONFOR COSTTHROUGHOUTITS LIFEHOUR (PHP),
FOR LED TUBELIGHT(T8 ITL-16W-DL-011).
= (12 HOURS x 16 DAYS IN A MONTH)
= 192 HOURS IN A MONTH
= (192 HOURS x 10 MONTHS)
= 1920 HOURS ANNUAL
FOR MULTIPLIER
= 50,000 HOURS/1920
= 26 YEARS
= (PHP 5136.48 KWH x 26 YEARS)
COST THROUGHOUT ITS LIFEHOUR (PHP) = 133548.48
= (16W x 12 LUMINAIRES) = 192 WATTS
= (192W x 12 HOURS) = 2304 W
= (2304 W x 16 DAY) = 36864 W/DAY
= 36864/1000 = 36.864 KWH
= (36.864 KWH x 10 MONTHS)
= 368.64 KWH
= (368.64 KWH x 13.9336)
= PHP 5136.48 KWH OF ELECTRICITY PER YEAR
