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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2323239 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by omotoda(m): 3:17pm On Aug 20, 2020 |
Attached connection was done on a friends 24v inverter. Is this even possible? Two 12voltscbatteriescin series and one of the series battery connected to another 12volt battery in parallel I told him he is playing with fire but he claims he had been using it line that for months. I could take a picture but I attached a sketch
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Re: Solar Energy, A Complement To FTA by laposta: 4:40pm On Aug 20, 2020 |
EPEVER MPPT Charge Controller Available 30A - N46,000 40A - N60,000 Specifications 30A/40A MPPT Solar Charge Controller. 12v/24v battery voltage configuration 100v Max PV Voltage Max. PV Input Power 30A: 390W(12v), 780W (24v) 40A: 520W(12v), 1,040W (24v) Whatsapp Contact: https:///07kqe5
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Re: Solar Energy, A Complement To FTA by essegis(m): 5:40pm On Aug 20, 2020 |
omotoda: I don't think he's playing with fire. He only succeeded in derating his battery bank to essentially 2 batteries worth. That's why it's not advisable cos of the money for the extra one battery presently doing nothing would have been used somewhere else. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 5:54pm On Aug 20, 2020 |
omotoda: So if the battery is 100AH, then it means he has a 200AH 12v connected in series to a 100AH 12v. In that case, the fire he is playing is the one that will turn all his investment on the battery into a waste in near future. |
Re: Solar Energy, A Complement To FTA by ceaser: 6:19pm On Aug 20, 2020 |
ojeysky: Nope. Remote switching is not really required. The fridge is basically for cold beverages on sale, so daytime cooling is sufficient. The freezer handles other frozen items on sale. |
Re: Solar Energy, A Complement To FTA by omotoda(m): 7:14pm On Aug 20, 2020 |
ojeysky: No sir.100ah 24 volts.Then one of the 12 volts from the two in series with a 12v 100ah in parallel! |
Re: Solar Energy, A Complement To FTA by omotoda(m): 7:15pm On Aug 20, 2020 |
[quote author=omotoda post=93038416] No sir.100ah 24 volts.Then one of the 12 volts from the two 100ah in series with a 12v 100ah[ in parallel./quote] |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:16pm On Aug 20, 2020 |
ceaser: Okay, in my case I have a power guzzling freezer for now and occasionally need to even shut it down during daytime when sun is not smiling and battery level is not looking promising for the night |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:18pm On Aug 20, 2020 |
omotoda: When you parallel a 12v 100AH with another 12v you get 12v 200AH 1 Like |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:49pm On Aug 20, 2020 |
Is there anyone with Sonoff basic R3 or a R2 flashed with tasmota firmware for sale? |
Re: Solar Energy, A Complement To FTA by omotoda(m): 7:50pm On Aug 20, 2020 |
ojeysky: Oga Ojesky,you don't get what the guy did oo. He has a 24 volts inverter.He connect two 100ah ,12 volts battery in series to the inverter making ,100 ah 24volts. He now connected a single 100ah 12 volt to one of the 12 volts of the series connection in.parallel. It was strange to me too but he claims he has been using it line that for over 9 months. I even spoke to his technician whobvlaims he had done several like that with no issues. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 8:12pm On Aug 20, 2020 |
omotoda: I understood it quite well my brother, if you have a 100AH 24v setup and then add another 100AH 12v in parallel to one of the 12v in the 24v series set-up, what you basically have created is 12v 200AH connected in series with 12v 100AH. Yes it will work but it will kill the battery, especially the single 12v 100AH in the series connection as there is no longer capacity balance. Do you get it now Bro? 3 Likes |
Re: Solar Energy, A Complement To FTA by Israelicc: 9:15pm On Aug 20, 2020 |
Na so Zeestone99, we won't be stagnant if the parameters are right, we go port. It's the way of the world, "move with the times or get stuck". Remember the days of PWM charge controllers and all we could achieve was having lots of strings 2 x 5, 2 x 9 configurations of solar panels to achieve high charging current. Then came MPPT charge controllers and higher Voc panels and we started talking about 3 x 3, 4 x 3, 12 x 6 config etc. When technology moves, we move. The trend is your friend as borrowed from another parlance. zeestone99: 1 Like |
Re: Solar Energy, A Complement To FTA by adrusa: 9:49pm On Aug 20, 2020 |
ojeysky: I believe the "capacity balance" is a myth. My personal observation is that batteries in parallel will charge and discharge according to their capacities. Because, current, like water will take the path of least resistance, batteries in parallel will charge and discharge according to their need based on internal resistance. This may be contrary to theoretical stipulations, but it is what I have observed over about a decade of interactions with batteries and solar. Of course batteries in series are a different beast. They need to be sufficiently similar in age, chemistry, capacity etc. 1 Like |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 10:11pm On Aug 20, 2020 |
adrusa: You seem to disagree with your starting statement but then seem to agree with me in your conclusion (the bold) which is the capacity mismatch in series that I referred, did I miss something? For clarity, no issues with paralleling cells of same capacity (and you can even be good with different capacities in parallel) which is how my current LFP bank is configured (105x2)x 8s |
Re: Solar Energy, A Complement To FTA by mank1234(m): 10:16pm On Aug 20, 2020 |
It's like using 200AH battery in series with 100AH battery. The later will get full faster and will overcharge if the starting point is same. The later will discharge faster (and eventually below minimum) if starting point is same. The 100AH will eventually die faster than expected except the inverter's low voltage disconnect is very high. Edit: funnily, I did this when one of my 4 batteries died. I put 2 weak ones in parallel and the strong one alone. Then at inverter's low voltage alarm, the single one reads about 11.5V and the double reads about 10.5V. My coulomb counter shows 20% more energy usage while charging than when I was using a balanced setup. 1 Like |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:56pm On Aug 20, 2020 |
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Re: Solar Energy, A Complement To FTA by kiekie1(m): 11:20pm On Aug 20, 2020 |
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Re: Solar Energy, A Complement To FTA by kiekie1(m): 11:24pm On Aug 20, 2020 |
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Re: Solar Energy, A Complement To FTA by Saipro(m): 6:06am On Aug 21, 2020 |
chris81964:That's wrong. Have someone check the unit. Ambient temperature matters (and it shouldn't be installed on the sunny side wall when avoidable) but not cooling the room beyond 27°C? Abysmal |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:08am On Aug 21, 2020 |
chris81964:Your war with their copyright and copyleft issues has come to a conclusion. I'm investigating two other wonderful Chinese brands though they're still kinda like clones of some basic design elsewhere but nothing as blatant as Fangpusun |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:12am On Aug 21, 2020 |
Oshomo12:Yingli aren't just good, they're great! I have both Canadian solar and Yingli installed at home. What's more, the earlier poly JoySolar panels I have are still firing at nearly nameplate 6 years down the line. The mono ones are a disappointment. |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:17am On Aug 21, 2020 |
kadorzy:Depends on rated VoC of each panel, distance and cabling to the CC. And tolerance of the CC |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:23am On Aug 21, 2020 |
chris81964:Disable power saving mode, if you haven't |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:44am On Aug 21, 2020 |
Israelicc:Number of connections (translate as failure points) would definitely reduce. VoC would double. Possibly ImP too (depending on cell arrangement). 1 Like |
Re: Solar Energy, A Complement To FTA by Saipro(m): 6:58am On Aug 21, 2020 |
NiyiOmoIyunade:On wonderful days, my Canadian solar panels can do 5× nameplate. Routinely do 3.5 - 4× when allowed. Due to my low consumption, I rarely do more than 2× (massively oversized array which has paid of these past few months of horribly low insolation). Having said that, Yingli often have no problem with 4 - 5× nameplate on regular days. And mine are even 250W poly, not mono. The 300W routinely does 4× (not sure why there's disparity in performance) as I set VoC and other parameters to be as similar as possible. |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 6:58am On Aug 21, 2020 |
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Re: Solar Energy, A Complement To FTA by abbeymighty(m): 7:36am On Aug 21, 2020 |
Hello to the gurus in the house, I have 2.4kva mercury modified inverter, with 220ah tubular bat3 * 2 and 300watts solar panel *2 with 40a cc. My question is can use it to power small 120ltrs thermocool freezer during the day only. Your advise is highly appreciated. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:40am On Aug 21, 2020 |
abbeymighty: Assuming there are no other significant load sure, it will serve and you should still have some juice left in the battery by night |
Re: Solar Energy, A Complement To FTA by adrusa: 8:39am On Aug 21, 2020 |
ojeysky: My point is that batteries in parallel configuration are less susceptible to problem of mismatch than batteries in series, in my experience. I will not put batteries of varying age or capacity in series, but I regularly do that with parallel and I have never observed any penalty in battery longevity. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 9:01am On Aug 21, 2020 |
adrusa: So we are saying the same thing then, i hope the information is entirely helpful to the op that asked the question |
Re: Solar Energy, A Complement To FTA by IYGEAL(m): 11:48am On Aug 21, 2020 |
abbeymighty: There might be a problem with the bolded. |
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