₦airaland Forum

durodee:
Hello house: please what is the advantage of thin film panels over mono or poly panels?

schneid:
Top of the morning to you solar geniuses in the forum. Kindly view my sizing below and assist where possible.

Power requirement= 43200WH
At 97% efficiency/losses = 44536.08WH
Using 24DC system, AH required= 44536.08WH/24 = 1855.67AH

At 50% DOD = 3711.34AH
At 2days autonomy = 7422.68AH

Battery selection
Using 200AH batteries = 7422.68/200 = 37.11
approx 38pcs .
For 24 system (2 batteries in series) = 76pcs

Solar sizing
Power requirement = 43200WH
Assuming 5hrs of sunlight 43200WH/5 = 8640W
Using SW255w panels= 8640/255 = 33.8 = 34PCs

Solar arrangement
Strings = 2 x 24
Parallel = 17 of the strings.

Charge controller
Knowing that each panel is about 8.5A x 17 in parallel gives 137A. I want to use 2 nos of Outback FM80.


Pls kindly review my calculations and correct me before I do something crazy.

Thanks as I look forward to your professional responses.

MiCasa:
Mr. Newbie here. I have read so much from this forum that I consider it my solar-reference-library, albeit I learned a lot especially from the likes of George_D, Richmon74 and others, there are some that I am still confused about. Without wanting to clog the progressive wheel of this forum too much, I need help with a little dilemma that is bugging me.

I have had (almost a year now) Su-Kam 5kva/96v pure sine wave inverter with charging current of 10A to a Saturn battery bank of eight ( 12v200ah connected in series.

While I always wanted hybrid renewable energy with solar array the cost of PV has kept me at bay. Solarpanelstore.com has SolarWorld Sunmodule 275w at $279 (N46,872) plus shipping and that has gotten me seriously thinking to add solar panels to my system.

My concern/confusion are as follows:

1. Are there other sources of lower priced quality solar panels? I will defer to others
Lower quality is not always better. They last a long time get something good

2. How many of the 275w panels (if that’s the best I can get) do I need for my 19,200ah battery bank?
The number of panels you get is

3. How many panels do I connect in a string of series or parallel?
Your connection has to yield 96 V plus 30%

4. Considering that the inverter is 96v, what size, type of Mppt Charge Controller do I need to complement my system?
I will get a minimum of 60 AMPS.

Much appreciated.

fuelsaver:
We have different sizes. As a matter of fact we bought them from MTN equipment leasing and they are here in Lagos - Ogba Ikeja to be precise. If you are ok with the price. call for inspection.

fuelsaver:
400 NEW AND USED INVERTER BATTERIES FOR CLEARANCE SALES N10,000 EACH
CLEARANCE SALES ONLY!!!
CALL NEWMAN
TEL. 08036911968

jamace:
Tell us more about your products, prices inclusive. Thanks.

samflexxy:
Nice,briliant buh does it work well?

HesInMe: Could one bring in, as checked luggage on a flight, some of these solar power units (controller, batteries, inverter)?

I'm a newbie to this solar power thing but currently completing a house in a place in Abuja where power supply isn't that great and looking to install a solar power unit in the new house. I'm visiting the US now, and was wondering if I should buy the stuff there.

Also, any guidance as to the best brands for these units would be helpful.

Thanks!

obimind: Talking abt charge controllers, I must confess that I appreciate the level of enlightenment I've gotten from this thread. How can one distinguish btw an MPPT charge controller & a PWM
charge controller?

obimind: Yes I have a 1.4kva inverter,24 volts. 2 set of 200ah battery. The connection is in series.

durodee: I am on my tenth generator in 4 years ( both petrol and diesel) with a monthly budget of about 100K on fuel minus maintenance!! Oh I have suffered!
My experience with inverter systems have been turbulent (I started with the locally made ones - 3 fire accidents at least) and I could now see my numerous errors plainly!

Presently I am using a 1.4kva Sukam 24V system with two 165amp/ 10 hrs batteries and enjoying it. I will definitely upgrade in the next few weeks!

Pls do anybody have info for or against Century or Blugate 3.5 kva 24V inverters?

Thank you once again guys!

obimind: For those asking for my consumption... Presently I use four fans, two LED TV 32inches and five energy saver bulbs. Now my question goes again; What size of solar panel will suit my consumption. 2ndly what size of charge controller shld I go for?

fntekim: Actually, only 4800wh is available, as i never discharge my batteries beyond 50%.
My charge controller is an Outback flexmax 60, its in top notch condition.
48v system with my charge controller limiting at 60A, can handle a 2880w array.
From the logs, the highest instantaneous harvest i've seen is 1750w in best weather.

i agree i need to double my batteries, but with my array producing so little, my batteries will be undercharged.

fntekim: Wonderful! So this thread is still alive??
i thought the recent tsunami swept it away.

The rains/cloud cover has really affected me.
For the first time in months, i get an LBCO alarm/system shutdown @ 48v.
My array is 2000w, and battery bank of 200aH.

I suspect i need to double my array, and increase my battery bank to 520aH to escape history repeating itself.
What are your thoughts??

p.s: My base is Calabar, and i understand we have the highest rainfall in the country.

tundebabzy: Perhaps an electrical engineer can grab this problem by the horn and create something. ..

GeorgeD1: tundebabzy,
there's really no need to re-invent the wheel. except your running a grid-tie system, you just can't rule out
using batteries. apart from being a store of energy, batteries also provide one important yet overlooked function:
they serve as a buffer for your inverter. this means that they guarantee a steady supply of current at controlled
voltage regardless of solar module output (much like a stabilizer - when you think ac voltage).