LAB ASSESSMENT REPORT
LIGHTING INTRODUCTION During this assignment student have to do a lab test for both acoustic and lighting and from the lab test of both acoustic and lighting they need to analyze the content of both and perform an good report base on the all the analyze data that been collected. The purpose of the lab assessment test are for the student to understand how to differentiate lighting in their deep properties.
THE OBJECTIVE The main objective of the lab test assessment are to allow the student to understand with the lighting such example of it colour, watts, rendering colour, an d etc. It for student to understand the technical specification of all the different light sources. During this lab assessment student will undergo several different of lighting and from there, they need to come with good sense of analyze of the lighting issues.
MATERIAL EQUIPMENT 1. 2. 3. 4. 5. 6. 7.
Lux meter Camera Masking tape Measuring tape Different type of light sources Colour pyramid Notebook
METHODOLOGY Step 1. By using measuring tape measured the distance of 1m from the light cabinet and mark it with masking tape. And repeat the process again but this time for 2m distance from the light cabinet. Step 2. Place the light sources that wanted to analyze, and then stand still at the 1m and 2m mark that been marked to take picture of it. Step 3. From step 2, 1 person stand facing the light box with the light sources that wanted to take picture, and another student are to switch on the light on the light cabinet where the other student turn off all the light on the lab and also lower down the bind around the window so the lab will be dark and the only light sources are from the light itself. Step 4. Hold the camera, and wait about 10 second before took an picture so the camera can adjust itself to the room setting. Take picture of both from 1m and 2m respectively. Step 5. After step 4 done, take the lux meter and make sure the light from the lab still of and place the lux meter top of the colour pyramid for about 510 second before take and the digit to ensure the average reading of the lux meter. Step 6. Repeat the step 2 – step 5 but using different light sources example such fluorescent, bulb, halogen, led and such. Step 7. After step 2 – step 6 data collected done, analyze the result for each light source and from the observation of the light colour rendering. Do compare it one to another.
TYPES OF LIGHT SOURCES Type of light: compact fluorescent Brand : Phillips Master Watts : 18W CCT :6500 Kelvin Colour rendering index : 82 Colour : Cool Daylight Fitting caps : 2 pin Lifetimes : 6500 Hours Voltage : 65 V Type of light: Halogen Brand :Osram Watts : 75W CCT : 2900 Kelvin Colour rendering index : 100 Colour : white Fitting caps : E27 Lifetimes : 2000 Hours Voltage : 230 V
Type of light:Compact fluorescent Brand : Phillips Essential Watts : 18W CCT : 6500 Kelvin Colour rendering index : 8 Colour : Cool Daylight Fitting caps : E27 Lifetimes : 8000 Hours Voltage : 220-240 V Type of light: Compact fluoresent Brand : Phillips Essential Watts : 18W CCT : 2700 Kelvin Colour rendering index : 81 Colour : Warm White Fitting caps : E27 Lifetimes : 8000 Hours Voltage : 220-240 V
Type of light: Halogen Brand : Phillips Ecoclassic Watts : 70W CCT : 2800 Kelvin Colour rendering index : 100 Colour : White Fitting caps : E27 Lifetimes : 1500 Hours Voltage : 230 V
Type of light: Frosted Brand : SYLVANIA Classic Watts : 40W CCT :6500 Kelvin Colour rendering index : 100 Colour : White Fitting caps : e27 Lifetimes : 1000Hours Voltage : 220-240 V
Type of light: LED Brand : Phillips Watts : 9.5W CCT : 2700 Kelvin Colour rendering index : 80 Colour : Warm White Fitting caps : E27 Lifetimes : 150000 Hours Voltage : 220-240 V
Type of light: Fluorescent Brand : Hitachi Watts : 8W CCT :2700 Kelvin Colour rendering index : 100 Colour : Daylight Fitting caps : F8T5 Lifetimes : 10000 Hours Voltage : 150-240 V
Type of light: Brand : Phillips Genie Watts : 18W CCT : 2700 Kelvin Colour rendering index : 81 Colour : Warm White Fitting caps : E27 Lifetimes : 8000 Hours Voltage : 220-240 V
Type of light: Halogen Brand : THL Watts : 15W CCT :2800 Kelvin Colour rendering index : 100 Colour : Clear Fitting caps : E14 Lifetimes : 1500 Hours Voltage : 240 V
TYPE OF LIGHT
LUX READING
PYRAMID READING
LAB ANALYZE
TYPE OF LIGHT
LUX READING
PYRAMID READING
LAB ANALYZE
1863
Hardly seen the darker color, the brighter color are average on visibility. The overall color pyramid is hardly visible. Analysis: Poor CRI, produce cooler greenish color on the color pyramid.
2273
The brighter colors are poorly visible while the darker colors are not visible. Analysis: Poor CRI. Only produces a small flux and the flux distance is short. Produces bright white color for the space above the pyramid not reaching the pyramid itself.
20224
Overall color visible. The pyramid color can be seen clearly from 1m distance. Analysis: The flux can be seen clearly around the color pyramid. Excellent CRI. Produced translucent white on the color pyramid.
2278
The brighter colors can be seen in a distance, but the darker colors are not visible. Analysis: Satisfying CRI. Produces bluish blush around the pyramid. Only produces a small and short distanced flux, not reaching the base of the pyramid.
2227
Only first 5 colors are visible, the darker colors on the color pyramid are hardly seen under this bulb. Analysis: Average CRI. The flux cannot reach to the base of the color pyramid.
1092
The brighter colors can be seen clearly from the 1 meter distance while the darker colors are not visible. Analysis: Average CRI. Produces yellowish blush on the top of the pyramid. It also only produces a small and short distanced flux, unable to reach the base of the pyramid.
2308
The darker colors on the color pyramid are hardly visible however the brighter colors can be seen clearly. Analysis: Good CRI. The lumen of the bulb is higher even though the watt is lower than the rest of the bulbs.
787
The darker colors on the color pyramid are hardly visible however the brighter colors can be seen clearly. Analysis: Satisfying CRI. Produces a yellowish color lighting on the color pyramid.
141
1185
The colour pyramid been taken to outside from lab to take the picture at 1m distance to check the colour temperature of from the sun. The picture been taken at 11.30 am on Saturday 03 May 2014.
Overall colors are visible. Analysis: Good CRI. Produces a translucent white on the color pyramid.
Overall colors are visible. Analysis: Good CRI. Produces a orange yellowish color at the surrounding of the color pyramid.
LAB ASSESSMENT REPORT
ACOUSTIC INTRODUCTION During this assignment student have to do a lab test for both acoustic and lighting and from the lab test of both acoustic and lighting they need to analyze the content of both and perform an good report base on the all the analyze data that been collected. The purpose of acoustic is to encompasses the strategies for internal and external noise from the sound proof room and the lab room.
THE OBJECTIVE To understanding on how the sound proof barrier help to reduce noise level. By the experiment that been done in the laboratory for acoustic, are to find the better solution to used what type of material to used for the compasate to reduce the noise from the room. And also to find what material that can extract the sound and noise from a room to not allowed the noise to make an echo inside the room or noise. The Formula : Transmission loss (dB) = Source Chamber (dB) - Receiver Chamber (dB) Transmission Coefficient (TC) Evaluate the acoustic performance when the sound proofing quality of the different type of wall insulation against various sound frequencies Formula : TL = 10 log10 (1/TAv)
METHODOLOGY
MATERIAL EQUIPMENT
Step 1. Set up all the necessarily equipment such as computer, speaker, and all the material ready
1. Acoustic chamber 2. Sound level meter 3. Tone generator 4. Speaker 5. Duck tape 6. Different type of material 7. Computer 8. Knife 9. Table
Step 2. Bring the speaker and the table inside the acoustic chamber room 1. Place the speaker in the acoustic chamber on top of table to the end of the room apposite the wall with void. Step 3. After step 2 done, place the sound meter in both room 1 and room 2. The distance for the sound meter and speaker are 1m away. And the room 2 also place the sound meter end of wall apposite the void wall. Step 4. After step 3 done, bring the material to be set up inside the room and to place the material o the void between the wall. Place the material and use a duck tape to seal the accessing hole. Step 5. After done the step 4, get out from acoustic chamber and close it door. From there set up the tone generator and computer ready to be test in different frequency (dB) such 500, 1000, 1500, 2000, 2500, and 3000 respectively.
TYPE OF MATERIAL
Plywood board
Plaster board
Foam board
Step 6. Start the session with 500 (dB) for 1 minute and after it done, record the reading and continue to do the same until reach 3000 (dB). Record all the data and make an table of it. Corrugated board Step 7. Repeat from step 4 – step 6 with different type of material and do the same until reach 5 different type of material. After all done do table and a graph to show and make a conclusion after word.
Polyester fabric
TABLE AND GRAPH OF THE RESULT Plywood with Plaster and Foam board
Plywood board MATERIAL
FREQUENCY (dB)
ROOM 1 READING
ROOM 2 READING
TRANSMISSION LOST
TRANSMISSION COEFFICEIENCY
DURATION
MATERIAL
FREQUENCY (dB)
ROOM 1 READING
ROOM 2 READING
TRANSMISSION LOST
TRANSMISSION COEFFICEIENCY
DURATION
Plywood Board
500
78.2
73.6
4.6
0.17
1 minute
Plywood Board +
500
79.1
74.8
4.3
0.44
1 minute
1000
77.6
75.6
2
0.09
1 minute
Plaster board +
1000
74.7
70.8
3.9
0.73
1 minute
1500
78.2
75.7
2.5
0.09
1 minute
Foam board
1500
81.9
74.6
7.3
0.87
1 minute
2000
84.2
83.5
0.7
0.10
1 minute
2000
80.2
74.3
5.9
1.05
1 minute
2500
84
83.4
0.6
0.10
1 minute
2500
72.6
70.9
1.7
1.06
1 minute
3000
83.9
83.4
0.5
0.11
1 minute
3000
73.9
71.9
2
1.1
1 minute
•The graph is showing the transmission coefficeincy of plywood as the media between room 1 and room 2. The average transmission loss are 1.82.
•The graph is showing the transmission coefficeincy of plywood, plaster and foam board as the media between room 1 and room 2. The average transmission loss are 4.18.
•The transmission coefficient value significantly decreased from 0.17 at 500Hz to 0.09 at 1000Hz.
•The transmission coefficient value significantly increased from 0.44 at 500Hz to 0.73 at 1000Hz.
•After 1000Hz the coefficient is fluctuate to 3000Hz
•The graph show the increased of coefficient until 3000Hz
Plywood with Plaster board
Plywood with Plaster with foam and Corrugated board
MATERIAL
FREQUENCY (dB)
ROOM 1 READING
ROOM 2 READING
TRANSMISSION LOST
TRANSMISSION COEFFICEIENCY
DURATION
MATERIAL
FREQUENCY (dB)
ROOM 1 READING
ROOM 2 READING
TRANSMISSION LOST
TRANSMISSION COEFFICEIENCY
DURATION
Plywood Board +
500
69.4
68.4
1
0.22
1 minute
Plywood Board +
500
74
73.9
0.1
0.49
1 minute
Plaster Board
1000
73.8
71.8
2
0.13
1 minute
Plaster board +
1000
72.3
67
5.3
0.77
1 minute
1500
85.4
81.6
3.8
0.14
1 minute
Foam board +
1500
73
62.7
10.3
0.91
1 minute
2000
75.3
74.9
0.4
0.17
1 minute
Corrugated board
2000
75.2
69.8
5.4
1.12
1 minute
2500
77.9
65.9
12
0.18
1 minute
2500
68
61.9
6.1
1.13
1 minute
3000
76.8
64.8
12
0.2
1 minute
3000
69.2
66.2
3
1.18
1 minute
•The graph is showing the transmission coefficeincy of plywood and plaster board as the media between room 1 and room 2. The average transmission loss are 5.2. •The transmission coefficient value significantly decreased from 0.22 at 500Hz to 0.13 at 1000Hz.
•The graph is showing the transmission coefficeincy of plywood, plaster, foam and corrugated board as the media between room 1 and room 2. The average transmission loss are 5.03. •The transmission coefficient value significantly increased from 0.49 at 500Hz to 0.91 at 1000Hz.
•After 1000Hz the coefficient is fluctuate to 2500Hz •Slightly increase from 0.18 at 2500Hz to 0.2 at 3000Hz
•The graph show the increased of coefficient until 3000Hz
Plywood with Plaster with foam with Corrugated board and Polyester fabric MATERIAL
FREQUENCY (dB)
ROOM 1 READING
ROOM 2 READING
TRANSMISSION LOST
TRANSMISSION COEFFICEIENCY
DURATION
Plywood Board +
500
86.1
73.3
12.8
1.04
1 minute
Plaster board +
1000
71.9
69.6
2.3
1.49
1 minute
Foam board +
1500
77.2
62.8
14.4
1.62
1 minute
Corrugated board +
2000
79.6
77.1
2.5
1.82
1 minute
Polyester fabric
2500
77
71.8
5.2
1.83
1 minute
3000
71.1
70
1.1
1.8
1 minute
•The graph is showing the transmission coefficeincy of plywood, plaster, foam, corrugated board and polyester fabric as the media between room 1 and room 2. The average transmission loss are 6.38. •The transmission coefficient value increased from 1.04at 500Hz to 1.49 at 1000Hz. •After 1000Hz the coefficient is fluctuate to 2500Hz •Then the coefficient decreased from 1.83 at 2500Hz to 1.8 at 3000Hz