KYAMBOGO
UNIVERSITY
FACULTY OF ENGINEERING
DEPARTMENT OF ELECTRICAL AND ELECTRONICS
ENGINEERING
TEEE3202
ILLUMINATION, HEATING, COOLING SYSTEMS
PRACTICAL LAB REPORT
LECTURER: MADAM NAMUTEBI GLORIA
NO.
1.
2.
3.
4.
5.
6.
7.
8.
NAME
SSALI DAVID
SSEKITOLEKO RODGERS
OKOT BERNAD AYOLI
KAMYA TONY
KIPROTICH TOM
SSEKAJJOLO DANIEL
SSEKITOLEKO FRED
BAZANYE FRANCIS
REGISATRATION NO.
19/U/BET/741/PE
19/U/BET/722/PE
21/U/BEL/16824/PD
20/U/BEL/11811/PD
19/U/BET/19405/PE
20/U/BET/11848/PE
20/U/BEL/11809/PD
21/U/BET/16459/PE
ASSIGNMENT
TASK
You are required to plan and design the lighting system for the specified lecture rooms at the
department. Each group is required to;
1. Measure the dimensions of the room allocated.
2. Determine the required illumination level for example 400 lux on the working plane for the current
lecture room.
3. Find out the wattage of the current fluorescent light fittings and rated lumens for each.
4. Determine how the numbers of light fittings were designed for the lecture room.
5. Include all calculations in the report.
6. Use the previous groups for lab 1 to do the practical assignment.
7. Make appropriate recommendations that can be done.
SOLUTION
1. CONSIDERED ROOM : ROOM 206
Length = 9.07m
Width =7.26m
Height = 3.50m
2. Required illumination.
From the lux meter reading = 355lux
3. Wattage of fluorescent fittings
P = 36W
Rated lumens = 3350 lumens
4. Number of fittings = 9.
5. Calculations necessary
Length of the fluorescent tube =1.22
DISTRIBUTION OF THE LUMENAIRES
7.26m
0.12m
1.49m
4.42m
9.01m
3.05m
9
3.05m
1.49m
1.2m
2.43m
2.43m
1.2m
The distance between rows = 3.05
The distance between columns = 2.43
This is in exception to the middle row where the lamp is put close to the white board to provide more
light to the lecturer.
VERTICAL ARRANGEMENT
Ceiling
Light
3.50m
Working plane
0.6m
I.
Height above the working plane, Hm=3.50m-0.6m=2.90m
II.
Room index
=
=
=
Therefore the room index is 1.39
1.39
Photos taken during measurements
EXPERIMENT NO.2
Objective .
To wire for a stair case arrangement using a two-way switch. Apparatus
1. Screw driver
2. Hammer
3. Pliers
4. Line tester
Components Required:
1. Two-way switches
2. Bulb holders
3. Bulbs
4. Joint clips
5. Wires
6. Screws
Theory A two switch is installed where is desirable for example on staircases, bedrooms and sitting
rooms at
the entrance. The other two-way switch is installed at the end or midway. The light point is provided
between first and last endpoints at an adequate location and height if the first switch switches on the
light. The switch at the end or midpoint or vice versa can switch it off. Two number of two way
switches are used for the purpose. The supply is given to the switch at the short circuited terminals.
The connection to the light point is taken from the similar short circuited terminal of the second
switch; other two independent terminals of each circuit are connected through cables.
Circuit diagram.
Procedures
1. Complete the wiring as per the wiring diagram.
2. Connect the common terminal on one switch with the phase line or live wire.
3. Then another switch common terminal connected to the lamp load, always prefer switch connection
in the Phase line.
4. Way terminals 1 and 2 of each switch are connected with each other, Neutral line is directly
connected to the lamp load.
5. Turn ON/OFF the switch at any end the light present state changes to opposite state, if light presents
in ON condition then it becomes OFF, if light present in OFF condition then it becomes ON.
6. Test the working of the bulbs by giving electric supply to the circuit.
Result
Tabulation
Switch position
Switch1
Swicth2
ON
ON
OFF
OFF
ON
ON
RESULTS/LAMP
CONDITION
PRACTICAL RESULTS
Switch1
ON
ON
OFF
OFF
Swicth2
OFF
ON
ON
OFF
RESULTS/LAMP
CONDITION
OFF
ON
OF
ON
COMMENT ON RESULTS:


The lamp does not light whenever there is discontinuity or disconnection (open circuit) with the
flow of current. It only lights where there is continuity.
On a two way switch, light can always be switched on and off from any of the alternative
witches
Task
Design the above assignment using Multisim software and compare it with the practical work
SIMULATIONS
A) SWITCH1 OFF , SWITCH2 ON.
Results, The lamp is off
B) SWITCH1 OFF SWTCH2 OFF
Results: The lamp is ON
C) SWITCH1 ON SWITH2 OFF
r
Results: The lamp is ON
D) SWTCH1 ON SWITCH2 ON
;r
Results: Lamp is ON
SIMULATION RESULTS.
Switch1
ON
ON
OFF
OFF
Swicth2
OFF
ON
ON
OFF
RESULTS/LAMP
CONDITION
OFF
ON
OF
ON
EXPERIMENT NO.2
To wire for a stair case arrangement using a three-way switch (intermediate switch).
Apparatus
1. Screw driver
2. Pliers
3. Line tester
Components Required:
1. Switches
2. Bulb holders
3. Bulbs
4. Joint clips
5. Wires
Theory
A 3 way switching lighting circuit (sometimes called two way switching with intermediate). This allows a
single light to be turned on or off from any of the switches. This is very similar to the two way switching
circuit but with and additional intermediate switch introduced into the three wire control cable that
links the two end light switches.
The circuit consists of a two way switch at each end (top and bottom switches in Fig 2) and an
intermediate switch in the middle. All three switches are connected together by a three core and earth
control cable. Notice that the wire connected to the COM terminals is looped straight through the
intermediate switch using a cable connector.
Circuit diagram.
Procedures
1. Complete the wiring as per the wiring diagram.
2. Connect the common terminal on one switch with the phase line or live wire.
3. Then another switch common terminal connected to the lamp load, always prefer switch connection
in the Phase line.
4. Connect terminals 1 and 2 of switch1 to terminals on L1 and L1 on the intermediate switch
respectively.
5. Connect terminals L2 and L2 of the intermediate switch to terminals on 1 and 2 respectively on
switch 2.
6. Neutral line is directly connected to the lamp load.
7. Test the working of the bulbs by giving electric supply to the circuit.
8. Record all your observations.
Tabulation
Switch position
SWITCH1
ON
OFF
ON
OFF
SWITCH2
OFF
OFF
ON
ON
SWITCH3
RESULT/LAMP
CONDITION
ON
OFF
ON
OFF
Design the above assignment using Multisim software and compare it with the practical
LAB RESULTS
SWITCH1
ON
OFF
ON
OFF
SWITCH2
OFF
OFF
ON
ON
SWITCH3
ON
OFF
ON
OFF
RESULT/ LAMP CONDITION
ON
ON
OFF
OFF
SIMULATIONS
A) SWITCH1 ON SWITCH2 OFF SWITCH3 ON
Results: The lamp is ON
B) SWITCH1 OFF WITCH2ON SWITCH3 OFF
Results: The lamp is OFF
C) SWITCH1 OFF SWITCH2 OFF SWITCH3 OFF
rr
Results: The lamp is ON
D) SWITCH1 ON SWITCH2 ON SWITCH3 ON
Results: The lamp is OFF
SIMULATED RESULTS
SWITCH1
ON
OFF
ON
OFF
SWITCH2
OFF
OFF
ON
ON
SWITCH3
ON
OFF
ON
OFF
RESULT/ LAMP CONDITION
ON
ON
OFF
OFF
COMPARISON OF SIMULATED RESULTS AND LAB PRACTICAL RESULTS
The simulated results are exactly the same as the practical results
APPENDIX