case study on energy-saver module for lightings by pg phang (asia technical support manager) power...
TRANSCRIPT
Case studyon
Energy-Saver Modulefor lightings
byPG Phang
(Asia Technical support Manager)
Power Quality Inc/Power Quality Thailand/MMPQ Venture
PQSynergy-September 2010
1All rights reserved by Power Quality Incwww.powerquality.orgwww.powerqaulityinc.com.my
ENERGY SAVING Devices
• Ever since Energy crisis started, it created opportunity for many company trying to produce energy-saving magic boxes.
• Most attempt to sell their magic boxes with PQ slogan (built-in TVSS & PF Caps)
• Tend to Guaranty 5 to 30% saving in cost.• ……………..• Will the magic box saves energy? Yes & No…
• Improved power factor• Reduced harmonics• Improved voltage imbalance• Reduced electrical current levels• Cooler device operation• Prolonged motor and other device life• Improved voltage level (higher or lower)• Quick payback• Improved energy efficiency• Claimed to save 10%, 20%, or even 30% energy cost reductions
are common
Common Claims for Energy Saver
Case Study.• Building owner had prior test on some 5 different
brands of Energy Saver Devices and was convinced on savings
• Management need justification, data, documentation & require 3rd party evaluation on energy-monitoring.
All rights reserved by Power Quality Incwww.powerquality.orgwww.powerqaulityinc.com.my
Method & connections- Each “Energy Saver Module” was wired in between to
Fluorescent Lamps load – 3 Phase of 14 units per phase of 36 watts lamp (brand new units)
- Common Mains supply source to all (3x ESM) test- Power Monitoring with Energy Saver Module Installed- Power Monitoring without Energy Saver Module were
done separately but using the same sets of Lamps Load
Fluorescent lamps (3phase x 14)
Energy Saver Module
Energy Monitor
Measurements(24 hrs period)
• Kilowatt Hour (Kwh)• Kilowatt• Power Factor • KVA• KVAR• Harmonics (VTHD & ITHD)• Voltage and Ampere 24hrs trending • Brightness test *8/22/2009 WWW.powerquality.org All rights reserved by Power Quality Inc
Resultsfor ESM-A
Event #1 at 23/06/2010 15:00:23.000BIrms Current Journal Trigger Normal To High
Timeplot
12:0022/06/2010
Tuesday
18:00 00:0023/06/2010Wednesday
06:00 12:00 18:00 00:0024/06/2010Thursday
06:00 12:00
0
5
10
15
20
25
30
35
kWh
TOT Pintg Energy(kWh)
1d - 03:00:00
5.34
26 k
Wh
Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh)5.34 kwh
Resultsfor ESM-B
Event #1 at 23/06/2010 15:10:00.000Trend
Timeplot
12:0022/06/2010
Tuesday
18:00 00:0023/06/2010Wednesday
06:00 12:00 18:00 00:0024/06/2010Thursday
06:00 12:00
0
5
10
15
20
25
30
35
kWh
TOT Pintg Energy(kWh)
1d - 03:00:00
4.44
31 k
Wh
Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh) 4.44 kwh
Resultsfor ESM-C
Event #1 at 23/06/2010 08:18:00.800Waveforms
Timeplot
12:0022/06/2010
Tuesday
18:00 00:0023/06/2010Wednesday
06:00 12:00 18:00 00:0024/06/2010Thursday
06:00 12:00
0
5
10
15
20
25
30
35
kWh
TOT Pintg Energy(kWh)
1d - 03:00:00
8.34
4 kW
h
Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh)8.34 Kwh
Conclusions
• Yes, It does save (sometimes snake-oil works)
• Degree of savings varies even on the same technology type with the same 37kwh load. Result:-- ESM #A saved 5.34 Kwh ( 14 %)- ESM #B saved 4.44 Kwh ( 12 %)- ESM #C saved 8.34 Kwh ( 22 %)
8/22/2009 WWW.powerquality.org All rights reserved by Power Quality Inc