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You can also make calculation of the solar power system
yourselves according to the calculation formula we provide
as follows
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|
| Calculation formula for solar home system |
Suitable For Family
| No. |
Device |
Energy
use in Watt per hour |
Consumption
hours per day. |
Total
consumption in Watt/hours per. day. |
2 |
Bulbs |
10 Watt |
2 hours |
2 x 10
x 2 = 40 Watt/h |
2 |
Working
light |
8 Watt |
2 hours |
2 x 8 x
2 = 32 Watt/h |
1 |
Water
pump |
100 Watt |
10 min. |
100 x 0,1
=17 Watt/h |
1 |
TV/Radio |
15 Watt |
3 hours |
15 x 3
= 45 Watt/h |
|
|
|
|
Total :
134 Watt/h |
|
| |
| The total
energy consumption for 30 days would be: |
30 days x daily consumption (Watt/hours) |
= |
Total consumption per month |
30 x134 |
= |
4020 Watt/hours |
| |
|
|
| The consumption
is converted into Ampere/hours. This is done by dividing
the consumption by 12 when using a 12V battery. |
4020 : 12 |
= |
335 Ampere/hours. |
| |
|
|
|
- The
solar cell panel must be able to produce 335 Amp/hours
per month.
- The
period that must be covered is April-October.
|
The table below shows the average
number of sun hours per month in your country and the average
electricity production (in Ampere/hours) per month for a
50 Watt Panel, that produces a charging current on 3.08
Amp as maximum and with geographical reduction (G. R.) for
solar radiation applied : |
| Month |
Jan. |
Feb. |
March |
April |
May |
June |
July |
Aug. |
Sept. |
Oct. |
Nov. |
Dec. |
| Sun hour |
40 |
70 |
120 |
180 |
240 |
250 |
235 |
225 |
155 |
100 |
55 |
35 |
Amp-hours
(G. R) |
126,0
124 |
220,5
188 |
378,0
267 |
567,0
392 |
756,0
547 |
787,5
498 |
740,3
496 |
708,8
443 |
488,3
391 |
315
252 |
173,3
164 |
110,3
110 |
|
| |
One 50 Watt panel
will cover the electricity consumption from April (392 Ah)
to September (391 Ah). As the battery bank is fully charged
the system will be able to cover the consumption in October
as well. The table shows that the system produces approx.
twice the consumption in sunny months as May (547 Ah) and
August (443 Ah). In this period it will be possible to double
the consumption or to store the energy for use in the winter
season. In this case, it would be necessary to recalculate
the battery bank.
Battery Bank
The batteries are dimensioned to store
one week extra consumption to cover peak load or rain periods
up to 7 days. The Battery Bank should not be fully discharged
as this will lead to a severe reduction of the batteries
lifetime. You must multiply the calculated storage capacity
by a factor of 1.3 - corresponding to a surplus capacity
of 30%.
(134 : 12) •7• 1,3 = 102
Amp/hours
A 12 Volt Battery with a capacity of 105 Ah (Amp/hours)
will cover the need.
For this size of system it is recommended to use the
12V/110Ah Led acid battery bank.
Regulators/Controller
For this size of system it is recommended to use the regulators/Controller
12V/24Vic
components of a Cottage Solar system installation
- 1 50 Watt
Solar Cell Panel
- 1 Charge
Regulator(200W)
- 1 110
Ah Battery
- 1 Installation
set (including assembly cables, fuses, manuals etc.,
If the system is used for normal 220V AC devices it must
be supplied with an Inverter. The inverter will be 200W--300W. |
| Your
own consumption calculation table: |
| No. |
Device |
Energy consumption |
Consumption time per day |
Watt hours per day |
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Total per day: |
|
| We readily dimension
the system you need. Contact us for a non-committal offer.
|
| Enjoy the quiet,smokeless
and long-lasting energy production from a Solar Power
System. |
| |
