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Barezzi's Posts

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PropertiesRe: Tastefully Finished 5Bedroom Detached Duplex @ Ireakari Estate Isolo. PIXXX by Barezzi(m): 2:43pm On Dec 22, 2014
EWU!
You're looking for who to scam...
You think everyone is from your re.tarded village!
You could be the gateman with access to a third-rate camera and the internet.

Step up your game bro, just a friendly advice.
BusinessRe: Resolved. by Barezzi(m): 2:31pm On Dec 22, 2014
tenzino:
.... another reason why you need a STRONG anti-virus.
I accessed that site from the office... I assure u the layers of protection here is beyond industry standard!
You can add the web link to your whitelist, it wont be flagged again.
BusinessRe: Resolved. by Barezzi(m): 1:35pm On Dec 22, 2014
tenzino:
Few minutes ago... I tried to access my Account Balance Online via the FirstOnline Portal, but rather got a bug. The Antivirus on my system alerted me that the site is infected . . . kush! Don't know what to do now, should I ignore the warning or wait for it to be corrected.

Please if you are working in First Bank.... Do alert them to do the needful. I need access to my account this festive season.

Thanks.
https://ibank.firstbanknigeria.com/FBN/
There's no such notif from my end...
Are u sure your system is not infected??

Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 11:13am On Dec 21, 2014
richmon74:
I hope I understand your calculations well. If so, my question to you is how will you replenish the lost 9kwh of energy in the night since all the generated 7kwh from the solar will be used up in the day?
The solar panels will be sized for daily energy use of 15kwh, while my battery bank will be sized for night time consumption of 9kwh.
This will replenish the 9kwh used up at night, while supplying the additional 6kwh for day time use.
I am assuming that they'll be no cloudy days! grin
So for 5hrs of sun, a 3kw array will meet my daily energy demand.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 10:29am On Dec 21, 2014
ilenaira:
http://m.youtube.com/watch?v=nhNWB4WsVfg
grin grin
Na me first view your video...
Very impressive.
The only unfortunate thing is that I sold my gen many moons ago, would have loved to experiment.
RomanceRe: Top 10 Female Romancelanders Who Are Most Likely Not Virgins by Barezzi(m): 3:40pm On Dec 20, 2014
grin grin
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 11:39am On Dec 19, 2014
salam12:
My set up of 3.6KW panel and 520AH batteries (2 string of 260AH in parallel) have been delivering above 30A charging current. This depend on draw down overnight on batteries and sun intensity.
I'm interested in ur battery spec.
How much are they??
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 10:56am On Dec 19, 2014
JUO:
I think you need to reposition your panel because 30a on that huge installation is so little
My thoughts exactly...
I have never seen up to 32A from my 2.1kw array. Max has been 31A+ going to my 200Ah battery bank.
Thanks to Bodejohn, I had to do a reassessment of my energy needs/production.
My daily energy use is in the 15kwh region.
With everyone home this festive season, my consumption will be maxed for the next one month!

For 50% DOD, ignoring system losses, my battery bank capacity should be 30kwh. For a 48v system, this translates
to 625Ah!

My observations:
From my 200Ah, 48V bank @ 50% DOD, I can only access ~5kwh.
Yesterday, I had a record production of 6.5kwh by 4pm! but by 7pm, my inverter tripped!! angry angry
If not for good ol PHCN, I would've slept in darkness...

So, if my daytime production of 6.5kwh was exhausted by 7pm, this would imply my night time demand is ~8.5kwh.
Instead of designing my system for 15kwh daily consumption, why not for night time demand of say 9kwh?

9kwh*2/48v = 375Ah!

Doubling my bank to 400Ah instead of 625Ah will solve my current wahala...
Barezzi & Sons Nig Ltd will save over N200k by this intervention! grin grin

What are your thoughts??
PhonesRe: See The Latest Bb Charger (photo) by Barezzi(m): 9:39pm On Dec 18, 2014
angry
RomanceRe: See Wat Dis Couple Are Doing In Public by Barezzi(m): 9:16pm On Dec 18, 2014
Medunah
grin grin grin
Chai! I love ur signature...lol!
Abeg, permission to steal it
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 4:46pm On Dec 18, 2014
Good stuff...
I go add am to my war chest!
RomanceRe: What Is Your "Selling Point"? by Barezzi(m): 3:15pm On Dec 18, 2014
badoolee:
God bless you brother cheesy
I don't know what you are talking about huh
grin I was really worried for a moment there...
RomanceRe: What Is Your "Selling Point"? by Barezzi(m): 1:11pm On Dec 18, 2014
badoolee:
My nostrils,my brain.my teeth,my kidney,my lungs and many more
Most importantly,my throathuh
shocked
As in deep th.roatinghuh
CelebritiesRe: Comedian AY Trains With The Nigerian Female Football Team, Super Falcons (pic) by Barezzi(m): 8:17am On Dec 18, 2014
Nice one, the guy is everywhere...
FamilyRe: Who Killed It Between Me And This Woman (the Love Of My Life)? by Barezzi(m): 1:27am On Dec 18, 2014
I killed it angry
FamilyRe: Recent Trad And White Wedding Of A Nairalander (photos) by Barezzi(m): 12:13am On Dec 18, 2014
WOW shocked
This is very beautiful...
Congrats bro
Remember to honour ur vows! Too many married bachelors these days angry
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 3:06pm On Dec 17, 2014
ilenaira:
As for fire protection, the cooling fan is to ensure things don't get too hot to reach that level. So, apart from an extinguisher (which is useless if no-one witnesses the fire), there's nada.
You could incorporate a smoke or heat detector to the start/stop switch of the gen.
Upon sensing excessive heat or smoke, it'll automatically shutdown the gen.

I sold my gen many moons ago, and my setup is not half as good as yours...
I use my inverter for everything in my house, apart from the heaters & ac
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 2:22pm On Dec 17, 2014
ilenaira
I'm sure your generator will be redundant.
Once your production exceeds demand, and with ur enviable battery bank, I doubt you'll start that ur gen in a very long time.
By the way, what fire protection/suppression systems have u put in place, in the unlikely event that ur gen ignites the foam tongue
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 11:36am On Dec 17, 2014
Very lovely setup, but your cables are flying all over the place...
Do you have plans to make them neat?
RomanceRe: How Do I Payback A Cheating GF by Barezzi(m): 10:56pm On Dec 16, 2014
Nonso23:
I always say this.
Men, especially successful men should learn to roll with ladies in their class (mental, academic or financial class).

Stop galivanting with all these Mary-kay and Brazillian wig loving girls without future ambitions nor viable careers who consider relationships as an opportunity to leech on you. There's a reason they are the way they are. It is simple. They cannot resonate on the same mental frequency as you.
You only need one date to sift the weed from the plants.

You are an oil rig worker. What happened to the intelligent, pretty and industrious ladies in your social circle?
Why did you have to go for an immature student, one who hasn't even bagged her first degree?
Those kind of girls are meant for yahoo-yahoo boys and their ilk. You brought this upon yourself.
Leave the girl alone and move on with your life. Stop plotting rubbish all in the name of revenge.
You lost fair and square. Lick your wounds.

Young men! Stick to your class and social circle when choosing partners so that you don't end up like the O.p.
Any lady who has got just her 'fine face or hot frame' going for her should be a 'no go area' for you.
Best post I've read in a decade!!!
You couldn't have said it better...
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 9:48pm On Dec 16, 2014
tundebabzy:
grin
Case dismissed then
grin
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 5:00pm On Dec 16, 2014
@ ilenaira,
Nice one. Please confirm if you have seen up to 30A charging current per battery bank from your CC.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 4:51pm On Dec 16, 2014
tundebabzy:
smiley
I never disputed the fact that solar modules can produce more than produce more than its rated output.


Or did I?
Yup you did... You say they're under-rated. I say they are not wink
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 1:36pm On Dec 16, 2014
For some strange reasons, I cant attach the datasheets... i'll try again later.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m):
tundebabzy:
smiley
The cell is the core of solar panel technology. By the time it used to make solar panels the efficiency would have further reduced.
grin... Tunde, you still don't get it...
Cell efficiency and the power rating of a solar panel are two different parameters.
A solar cell at 50% efficiency simply means it can convert 50% of sunlight to electricity
& heat at STC.(In very simplistic terms). The higher the cell efficiency, the more
kwh(energy) of electricity it can produce. In practical terms, its akin to comparing the
screen resolution of a Tecno phone and an iphone 6 of same dimensions tongue. Imagine both
phones are solar panels, and the pixels - solar cells. The Tecno phone with low efficiency
cells, will produce low kwh(energy), whereas the iphone 6 with high efficiency cells will produce high kwh(energy).
The practical implication of this is that for your limited roof space, u want solar panels with high efficiency cells.

Whereas power rating is the amount of dc power the panel can produce at STC.
That the cell efficiency is 50% does not mean that the solar panel performs at 50% of its nameplate power.

The koko of the matter is if its possible for a 250w solarworld panel to deliver 260w, hence producing more than its nameplate rating.

A solar panel technical datasheet contains all the info you need concerning any panel.
There's a parameter called Power Tolerance, see attached datasheets...
Power tolerance is a measure of how much higher or lower the POWER OUTPUT of a
solar panel might deviate from its NAMEPLATE rating.

Power tolerance for a 250w panel from the datasheets attached:
Solarworld panels: +5%/-0%
Sharp Panels: +5%/-0%
Suntech Panels: +5%/0%

The 250-watt Solarworld panel with a +5%/0% power tolerance can actually produce anywhere from 250 watts to 262.5 watts under ideal conditions.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 7:58pm On Dec 15, 2014
tundebabzy:
The article you quoted mentioned that the highest achieved efficiency is around 47% at STC. The efficiency will increase under other conditions but I don't see any mention of 100% efficiency.

I also agree with@ bodejohn and basic physics that there's no energy conversion that can be 100% efficient. From the article you posted, Solarworld panels ratings are under-rated when installed under right conditions in Nigeria
At bolded, it refers to CELL energy conversion. That is its effectiveness in converting solar energy to heat and electricity. This is purely a function of cell design, and the quality of materials used in its construction.
No panel has 100% cell efficiency. What's the industry average??

For your post in red, I suggest you read up on solar panel technology, it'll clear up a lot of misconceptions wink

PS, I'm not holding brief for solarworld, suntech or sharp.
PropertiesRe: Tastefully 3 & 4bedroom Flat & Duplex @ IKOTA VILLA & Chevy View Estate by Barezzi(m): 5:01pm On Dec 15, 2014
No pix?? angry
PropertiesRe: Tastefully Finished 5Bedroom Detached Duplex @ Ireakari Estate Isolo. PIXXX by Barezzi(m):
My eyes! angry
Such terrible picture quality angry
You cant afford a decent camera, and you want me to deal with you?? huh

See better pic quality here: https://www.nairaland.com/1806048/pictures-lovely-finished-5-bedroom
PropertiesRe: Do I Mold Blocks Or Buy It? Please Advice. by Barezzi(m): 4:41pm On Dec 15, 2014
ETHIX:
Please mould your blocks. Find details below:

A tipper of sand cost 14,000 (not sharp sand o)
A tipper can mould 16 bags of cement
Workmanship per bag is 700 naira
You can mould 35 blocks with a bag of cement and the block will be very strong.
The cost of 1,120 blocks is 105,700 naira
Far better than you buying 1000 blocks for 120k
You pay for workmanship according to the bag of cements used which is 700 naira per bag regardless the number of labour used.
From your analysis, we're looking at savings of 14k for every 1,120 blocks. A bungalow will require about 5k blocks, giving
you a savings of about 70k! shocked
That 70k is enough to erect a BQ tongue
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 11:51am On Dec 15, 2014
urusky247:
please can anyone recommend a good battery charger/maintainer for me so that i will be able to use it to charger standby batteries. cause i had to take one of my batteries to this automobile batteries men for charging, after charging for several hours and i carried out test on the batteries but it didn't charge well. or if you have any charging method it is also welcome. thanks
No idea.
cc: kiekie, richmon74
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by Barezzi(m): 7:38pm On Dec 14, 2014
bodejohn:
@ Barezzi, I did not assume any of the values I used, I was only lazy, attached is the insolation graph, it was the average of recorded values in Nigeria for 22yrs.

My aim is not to run any manufacturer down, the more reason I added suntech that we have known to be good from experience. You will notice that they have similar performance on paper.

30% improved power generation through professional installation is subjective but I respect your opinion.
The guys who handled my installation did a very bad job angry, they installed my panels directly on the zinc roof, and you know what temperature does to panel voltages, and its max power by extension.
At least with mounting racks, they would have been some clearance for air circulation/cooling.

I miss the feeling of DIY, I may teardown the installation and do it myself grin cc: GeorgeD1.
Or get Richmon74 to do it professionally...

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