Good evening everyone,
please have anyone here got links to a local RE seller who deals in flexible solar panel?
am looking to get a few for my wacky lassie 16' fishing canoe have got in the pipeline.

Adrusa, thank you so much

adrusa:


You can speak with him on zero8one5zero9six5673 or 0eight0nine5seven83119

Go with Hisense 100 litres chest freezer. Power consumption is 100watt. Thats what I am currently using

dejidotun2000:
....

Namzy:
This is main problem with that charge controller. How come there different voc for different battery voltage or is that the way the voc of a charge controller is calculated?

That strict range of different VoCs for different voltage systems put some question mark on the efficiency. It may raise suspicion that the efficiency at all VoCs viz-a-viz the voltage system may not have a linear relationship in efficiency. Energy may likely be wasted if one goes a higher VoC that that recommended for a particular voltage system. If not for that downside and maybe a few more that may be present, these guys would have been a good value for money. They've even come up with another product with in-built WiFi for remote monitoring.

m.aliexpress.com/item/4000007556126.html?trace

I still think of securing the PowMr just to know who between the two is telling the truth (Penn and Teller tell a lie )

The PowMr appears to have good reviews on Amazon though.

dejidotun2000:
....

I think it's more than the 102 litres I quoted. Perhaps larger volume (around 209L or 206L or thereabout sha).

Currently away from home. I will snap the name plate when home at the weekend. Please bear with me.

hardywaltz:
Thank you all for your response
We will be having a meeting with the installer in the days to come but in the office we settled with the following specs. (Basics)

96 nr 340w solar in 4S6P x 6 strings
6 nr Midnite Combiner box
6nr 250/100 Victron Smartsolar Charge Controller
3nr 48/15000/200-100/100 Victron inverter paralleled to give 3 phase.
9nr 48/13.8kw Lithium batteries complete with bms connected in parallel to give 124.2kw
Busbars, fuses, etc

But i assume the those big lithium batteries have in-built BMSes. At least I am dead sure of the 12v 100amps advertised to me before. I know the 24v and 48v nominal will equally have in-built BMS.

I may be wrong in my assumptions so I stand corrected.

Connecting another external BMS may disrupt the programmed algorithm of the in-built ones and the long term result of the clash may actually lead to an non-functional effective battery protection, eventually leading to early battery death.

And with that in mind, I wager your Installer may have included some unnecessary items, deliberately or otherwise, into the quotation.

Thanks

sintolord:
Go with Hisense 100 litres chest freezer. Power consumption is 100watt. Thats what I am currently using

Thanks.

House, can anyone share their experience with DC freezers.

It seems that Felicity offer some and I have come across a brand named bona too.

How do they compare amongst themselves and to high efficiency AC models from LG, Hisense etc in terms of power consumption and build quality.

ceaser:


I think it's more than the 102 litres I quoted. Perhaps larger volume (around 209L or 206L or thereabout sha).

Currently away from home. I will snap the name plate when home at the weekend. Please bear with me.

I like the fact that DIYers are opening their eyes to the benefit of AC-coupled systems; I was crucified here on this forum by ignorant people on the possibility of using grid-tied inverters/micro-inverters for off-grid systems.

Secondly, the benefit of utilizing high voltage dc inverters for large systems cannot be over emphasized. The overall system dc current is much lower, I2R losses are greatly minimized, and optimal charge rates for the batteries are achieved.

Please don't moan about high voltage dc and all the unverified bla bla cliches that make me sick. High voltage AC sources are still much more dangerous to the human body than similar DC voltage sources. See this link for the skeptics:
https://www.youtube.com/watch?v=snk3C4m44SY

olopan:


Good evening hardywaltz,

so i will try as much as possible to take your request line by line.

For a start am not too sure that there is a 30KW 3 phase par say, NB: 1KVA = 0.8KW
but if judging by the 40KVA in your third paragraph, then that's a 32KW system, again not sure of its existence but eh! I.D.K.I.A
So I guess the installer has an indian inverter type in mind.
¬
For the panels Not bad the solar panels are good but i would do things differently.

60 units of 200Ah - to me is a bit much, if right he'd like to do a parallel string of 360V x 200Ah x 2 = 144,000Wh
[
i'd say from your findings you've things right, vaguely.
but charge controllers determine solar panels used and loads and charge time affect it all.

On the battery too, i'd say spot on.

since Lithium battery is newer to this hemisphere, I’d proceed with caution to play safe.

BUT

I would have done things differently to achieved a more simple and efficient system.

I will choose a 48V system, eh! I don’t want to die of high voltage while connecting my batteries due to a cut in my safety gloves.

Now that am certain of my system voltage, i will proceed to get premium product to cover my huge investment.

For the Inverter
Since this is a 3 Phase installation I will go with a Victron Quattro inverters/charger of 10Kva, paired to work in synergy of three phase [R,Y,B]
this way I’av bypassed high voltage and still end up with an equivalent power, even better with 1.0 pF [power factor].

Overview
I will make use of an AC - DC coupled system, so that my loads will run off my PV - inverter during when the sun is up and my DC charge controllers will charge the batteries and still be able to provide more in case of more power needs and the wake up the installation in case of battery too low to get inverter systems up when low.

So i will go with a PV Inverter of around 25KW which should be sufficient to power load when needed and especially at full power and a solar charge controller of high Voc that can charge my battery when PV inverter covers my loads.

i.e.
92 nos of 300W canadian solar panel to a 25KW PV - inverter [ allows oversizing]
and
18 nos of 300W canadian solar panel to a smart charge controller

in total 110 nos of 300W panel equivalent to 33KWp.

For Batteries
Concerning the batterries
I will go for Hoppecke batteries, of 2V ~1500Ah nominal @ 72KWh or 2900Ah Max. @ 139.2KWh

this means that
I won’t change my batteries in the next two - three years soon but more of five to seven years, and making sure that ROI [ return on investment] is guaranteed.

With a easy to understand system.

Credit: Rendezvous Solar
free free to contact me if non of the info is not clear enough .
Rendezvoussolar@gmail.com

the image should shed more light too

ceaser:


That strict range of different VoCs for different voltage systems put some question mark on the efficiency. It may raise suspicion that the efficiency at all VoCs viz-a-viz the voltage system may not have a linear relationship in efficiency. Energy may likely be wasted if one goes a higher VoC that that recommended for a particular voltage system. If not for that downside and maybe a few more that may be present, these guys would have been a good value for money. They've even come up with another product with in-built WiFi for remote monitoring.

m.aliexpress.com/item/4000007556126.html?trace

I still think of securing the PowMr just to know who between the two is telling the truth (Penn and Teller tell a lie )

The PowMr appears to have good reviews on Amazon though.

I don't think Powr is original neither is it fake. These guys just APPROACH manufacturers who makes controllers to them. They just slap their name on it. So it's just some little difference between the two. So buy whichever one you fancy, probably, the cheaper of the two.

jazzman2:

https://www.youtube.com/watch?v=snk3C4m44SY

I always watch Electroboom on YouTube, dude is a hilarious tool.

dejidotun2000:
Thanks

Hisense fc260sh about 200l power consumption 67-70watts price about 75k give or take thank me later

olaolu11:
Is george-D still on this thread? I am reading from 1 and is on 57 presently. He was very prominent with some other notable names but I have not seen any post from him.

hello olaolu,
i'm still very much around. i've been on hiatus from the thread while attending to other
pressing issues although i do pop in every once in a while to see how things are going.
apart from a few here who make a living selling solar products, most others do have day
jobs that require their time and as such may not always be on hand to make inputs to
trending discussions.
all the same, you can always send me a pm in case you need anything urgently.
cheers!

GeorgeD1:


hello olaolu,
i'm still very much around. i've been on hiatus from the thread while attending to other
pressing issues although i do pop in every once in a while to see how things are going.
apart from a few here who make a living selling solar products, most others do have day
jobs that require their time and as such may not always be on hand to make inputs to
trending discussions.
all the same, you can always send me a pm in case you need anything urgently.
cheers!

hi. I stumbled upon this thread and have read to 80 and is following from 540. You were prominent then but silent in the recent times so I thought you've upgraded to become an IPP. Glad to know you are very much around

I will thank you right now.
THANKS !

Namzy:

Hisense fc260sh about 200l power consumption 67-70watts price about 75k give or take thank me later

funken:
yes but from the US

Better... Pm me.

pls if a solar system kills a battery within 3months which is faulty? solar panels OR charge controller.

I just placed my order this morning.

Deluxe8000:
pls if a solar system kills a battery within 3months which is faulty? solar panels OR charge controller.

We are not wizards here, kindly provide detailed information about the set up..

Battery, panels, controller, Load, back up time, charging time... Etc

SOLARWORLD PANEL PRICES"Made in Germany" !

SW 345W mono = N75,000.00
SW 340W mono(above 30) = N73,500.00
SW 315W mono = N70,000.00
SW 280W mono glass = N62,000.00
SW 175W Poly (14pcs) = N40,000.00


Trojan 12v 205Ah AGM USA battery = N170,000
Trojan 6v 315Ah AGM USA battery = N154,000

*CYBERPOWER INVERTERS"PURESINEWAVE" PRICES*

▪CPSPIE-2.5KVA/24V PSW Inverter +AC/DC Cables: N150,000.

▪CPSPIE-3.5KVA/24V PSW Inverter +AC/DC Cables: N270,000.

▪CPSPIE-5KVA/48V PSW Inverter + AC/DC Cables:
N430,000

Quanta 200a inverter battery .... N130,000


Contact,
Smartcellglobal services
081-350-319-51
WHATSAPP::: https:///2348170385620

Good day everyone.
I heard there is solar pump system that uses solar panel alone without battery, anyone here with useful information about it? Thank you.

funken:
abeg show us the fangpusun way o.. abeg

contact Cony Tu via this email -
solar2@Fangpusun.com

I saved 20k+ on FLEXMAX 80 & 24V battery balancer, even with express shipping, compared to prices listed here.

cheers

Tilenzua:
Good day everyone.
I heard there is solar pump system that uses solar panel alone without battery, anyone here with useful information about it? Thank you.

that's always the basic & best idea. the grundfos sqflex 2.5 does that pretty well. it takes ac/DC voltages up to 300v ac/DC. works with any kind of panels as long as minimum volt of 120v is achieved.

idea is to pump water while the sun shines and store in tanks, steel or plastic for use later or immediately. its always cheaper to store water than to add batteries to enable pumping at odd hours of the day.

cheers

samnaija:
Can the gurus in the house please shed some light on this issue. It's about battery bank construction and selection .

Scenario 1
Battery 2v 500 ah or 12v 200ah
Which of these two is more rugged and easy to manage.in Nigerian terms (dey last).

Scenario 2
Battery bank volt selection.(24v or 48v)
Which is easier to manage and rugged.(dey last)


I know banks mostly go for 2volts batteries to build their battery banks . Installers pls contribute why most houses opt for 12v batteries.

I started my solar journey with 2v 500 ah batteries.no solar panels . (12v 500 ah). Making a total of 6 batteries. I no go lie being the first time using inverter . having light is to sweet , until I hear the inverter screaming and begging to be shut down before I go off. This abuse lasted for almost 3yrs. Before I moved on to using 12v200ah battery(48v) system.
we are all learning and sharing our experiences
I am currently on( 24v )system..
Pls house , installers contribute thanks in advance .

Guys help needed 2v battery or 12 v battery.

lexi28:


that's always the basic & best idea. the grundfos sqflex 2.5 does that pretty well. it takes ac/DC voltages up to 300v ac/DC. works with any kind of panels as long as minimum volt of 120v is achieved.

idea is to pump water while the sun shines and store in tanks, steel or plastic for use later or immediately. its always cheaper to store water than to add batteries to enable pumping at odd hours of the day.

cheers

LexI, thanks.

Tilenzua:
Good day everyone.
I heard there is solar pump system that uses solar panel alone without battery, anyone here with useful information about it? Thank you.

Can anyone give me an idea of types available and likely cost? What and what will be needed? Thanks

Tilenzua:


Can anyone give me an idea of types available and likely cost? What and what will be needed? Thanks

hi,
basically you actually need to know the overall head of water your pump is required to pull and pump water to. this means depth of borehole, lateral gradient, and height of overhead tank.

popular brands are the Lorentz, and grundfos, and the other Indian and Chinese brands
the Lorentz comes with its own controller (with inbuilt MPPT), the grundfos comes with 2 variants, the CU101 (ordinary on/off switch) & the CU200 that has added features for float switch and generator connections. these controllers usually come as one package, but most retailers sell them separately, so be careful.

when ordering the generic brands, it is best to ask for the data sheets to determine whether it suits your water supply requirements. some people self the controller from 650k and sell the CU200 for 250k. try Google and jiji, before venturing to go to Alaba. I will search for the contact of Auxwell, I think, the last reps of grundfos I know.
some guy in Alaba offered me a pump with 100m head for 130k. it all depends. if you have the funds, go for grundfos or lorentz, (which is more expensive)

I will assume the borehole or water source is ready.if a borehole with standard diameter (6", you will need the pump, 4core flex (some use 2.5mm, but 4mm is better), strain relief PVC cable, tiger pipes (1,1/4"- 1,1/5" based on outlet of pump) or ordinary PVC pipe of same size. if using tiger pipes, they have screw threads, ordinary pipes need to be glued with connectors using PVC gum. then you will need cable ties to hold the electrical cable and strain relief cable to the pipe of your choice.

you will need some kind of rack or pole mount to place your panels, depending on location/size of storage tanks. most steel tanks of large capacity have the solar panels mounted on racks welded atop the tank. if you have space, place panels on pole mounted rack away from trees or tall buildings. you connect wires from panels to controller, and connect wires from pump to controller. the controller is usually placed in a waterproof enclosure under the panel rack, but you could place in anywhere else.

your panels are usually wired in series to achieve minimum startup voltage. some Chinese brands I have seen use a 2s2p config of 300w panels, and it pumps water okay. for pumps like grundfos just check Voc of panel you want and calculate how many you need in series to achieve operating voltage of the pump. same goes for Lorentz.

cheers

I cant thank you enough. You just saved me literally thousands of naira on solar items peddled on this thread. Thanks!!

Trippledots:


Better... Pm me.

Thanks, I actually did and ordered myself a fangpusun 150/70 cc plus the display for a very ridiculous price.

lexi28:


contact Cony Tu via this email -
solar2@Fangpusun.com

I saved 20k+ on FLEXMAX 80 & 24V battery balancer, even with express shipping, compared to prices listed here.

cheers

funken:
I cant thank you enough. You just saved me literally thousands of naira on solar items peddled on this thread. Thanks!!

Glad i could help too. Yw

Deluxe8000:
pls if a solar system kills a battery within 3months which is faulty? solar panels OR charge controller.

The design killed it. most likely.

Trippledots:


The design killed it. most likely.

thanks for the reply. What can i do? i am gradually loosing hope in solar system after inviting 2 engr. from nairaland. The last engr. promised me that it won't happen again after the installation of 580w solar panels(280 poly+300 mono) before i bought two batteries at the same time. The one i connected to the solar system is dead within 3months while the other one that i use with on-grid to charge is still very much ok.