Re: Electric it can finish us
So after a big delay i come back to answer the querry by Ehtsab ji. I'm deeply sorry for the big delay.
Since i spoke of a Standalone system for Rs. 3.5 - 4.0 lakh
For the model house i counted for following power consuming appliances.
6 Standard Size Tubelights 1.2m at 30W each (5 Hours each)
1 Refridgerator 70W (14 Hours)
4 Ceiling/Pedastel Fans at 40W Each (16 Hours each)
1 TV/receiver Combo 200W (7 Hours)
That makes a Grandtotal of 5840Wh or 5.84kWh which is need for the above mentioned Set-up.
The average Solar Radiation in Pakistan is 5.8 kwh/m2/day or approx. 2100-2300 kWh/m2 per year (i'll take 5.3 kWh/m2/day to be on the safe side)
Now the Info about the components.
- Solar Panels or Photovoltaic Panels
- Charge Controller
- Battery bank (Similar to Auto-Batteries)
- DC -> AC Converter (As Solar Power is produces as DC current and needs to converted into AC Current so u can use normal household appliances)
For a Set-up that needs 5.84kWh/day and we've 5.3kWh/m2/day solar Radiation multiplied with a efficency factor of 0.9 (for the Battery Bank) the simple result is 1.224kW Peak.
5.84kWh/day divided by 5.3kWh/m2/day = 1.101 divided by 0.9 = 1.224 kW Peak of Solar Panels
W Peak = Wp
The Prices in Germany r quite high = 1 Wp/3 Euros and beyond
Although if u buy in China the same products (many German companies have relocated their production there) the price of 1Wp= US$ 2.4
Which means the price for 1.224kWp = almost US$2938
The price for good Quality Charge Controller with Built-in DC->AC Converter ranges between US$650 - US$900 (I take US$800)
We r now at US$3738
Now the Battery Bank. For the 5.84kWh at 230V we need battery capacity of at least 25.39 Ah
5.84kWh divided by 230V = 25.39Ah
I put in 1 autonomy Day (means for if for 1 Whole Day the Solar Panels don't work for some reason we take double battery capacity) = means 50.78Ah
To be Honest i don't know the prices in Pakistan or China or any Country for that matter. If i take the German market prices then 50.78 Ah at 230V will cost around US$900. I think they r cheaper in Pakistan and it makes absolute no sense to pay the high shipping charges for such heavy batteries in case u decide to buy them in the US or Europe to be used in Pakistan.
So all in all we stand at US$4638 for the hardware. Regarding the wiring only little changes needed to be made which won't fall that much into account.
US$4638 = Rs. 366402 at current exchange rate
In the coming few days Insha'Allah i'll post links weher u can buy such equipment at the prices i mentioned.
BTW u don't need to be an engineer to set-up such a system. If u r half decent electrician this should be managable. Only the positioning of the Solar Panels is a delicate matter so a Guy who is into Satellite Dish Buisness can help along.
Feel free to correct me at any stage i'm more than happy and willing to learn :)