1. Less power consumption than running a light bulb.
Trial Report
8th May 2015
Less power consumption than running a light bulb.

2. Trial Objective Savings achieved from running the SOLAR COOL Con
Air Con operation in base station cabin environment

3. Abbreviation and Definitions
kWh – kilo watt hour, measure of electricity for billing purposes
HP – a unit of measurement of power. 1HP= 746W
W – measure of power
A – measure of current
V – voltage

4. Methodology
Use solar panels to reduce power consumption of the air con unit
While the sun is shining, the SOLAR COOL Con with the help of 4 x 250watt solar panels, used the DC electricity generated from the solar panels to power the 3 DC motors in the outdoor unit thus saving up to 97% electricity.
When there was insufficient sunlight, the SOLAR COOL Con will take AC power from the grid power or an OFF-GRID BATTERY or GENERATOR, and convert to DC power thru the intelligent power control module to run the 3 DC motors. This process is more efficient than any air conditioner on the market today. The SOLAR COOL Con runs at night time using this process.

5. Test Setup and Scenario

6. Seksyen 4, Shah Alam (Loc ID: B00656)

7. Test Period Site : Shah Alam Seksyen 4 Location ID: B00656 Malaysia
Start date : 13th March 2015
End date : 21st April 2015
Duration : 38 days
Temperature : 25 Celsius
Operating hours : non-stop
Mode: normal

8. Technical Specification of Product
SOLAR COOL Air Cond Unit
Solar PV Panel

9. Observations
In the 1st week, unstable grid power to the cabin caused intermittent power trips. This caused the SOLAR COOL con to switch off. To solve this we connected grid power via a UPS to the unit.
The air con worked best when the cabin doors stayed fully closed.
There were no significant impact from weather conditions (rain, cloud) on the SOLAR COOL con performance.
For full detail please refer to weekly report issued to the Operation Department Manager.

10. Data Used and Calculation
Item
Initial Week
1st Week
2nd Week
3rd Week
4th Week
End
Date Taken
13/03/15
21/03/15
28/03/15
06/04/15
13/04/15
21/04/15
Initial Control Value W Reading
1182
Power (W)
154.6
102.9
196.5
222.2
407.1
49.9
Current (A)
0.936
0.691
0.884
1.616
1.890
1.931
Cumulative kWh Reading
0.001
31.53
61.13
95.38
122.1
153.5
W Low
149.5
10.0
9.9
W High
175.0
586.5
1153
Days Running 8 14 24 30 38
Average kWh per day = 4 kWh

11. Business Case Study

12. Savings converting to solar aircond
Saving Percentage
Standard Aircond
Savings converting to solar aircond
1.0 HP
75%
1.5 HP
81%
2.0 HP
86%
2.5 HP
89%

13. Total Cost of Ownership (TCO)
Standard aircond 1.5 HP
Year 1
Year 2
Year 3
Year 4
Year 5 RM
Capex
2,000.00 -
Maintainance
500.00
1,000.00
Energy cost
3,944.00
19,720.00
22,720.00
Solar aircond
9,000.00
750.00
1,500.00
734.00
3,670.00
14,170.00
Indicative TCO savings over 5 years per unit aircond
RM8,550.00

14. Business Case Summary Average savings 80%
5-years TCO for 1.5 HP per unit
RM8,550.00
ROI for 1.5 HP at indicative price per unit
2.8 years