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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2275265 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 Topmost11(m): 9:46pm On Dec 14, 2019 |
godspeed: This is what he meant
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Re: Solar Energy, A Complement To FTA by desiji: 10:06pm On Dec 14, 2019 |
myvic70:Sent. from Ojesky i haven't gotten ur mail adresse |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 10:09pm On Dec 14, 2019 |
earthrealm: Challenges we low budget DIY enthusiasts have! Before going the DIY way, ensure you read and consult extensively else one quack "expert" will install nonsense for you. Imagine an "expert" using a 12v cc for a 48v setup! But if you are enlightenened before you call him, his response to your questions will show you if he is an expert or not. I went the DIY way and learnt a lot. I am now an "expert" but won't contemplate installing for people except we consult the true experts as we go along. For example, I had a 12v inverter and almost ordered 200 or 250 watts panels(which are 24v)but for my studies and queries. Thanks to the georgeD, kiekie and others, I achieved a near perfect setup but I read and consulted extensively. My take is don't venture into anything without first getting info on it. 6 Likes |
Re: Solar Energy, A Complement To FTA by desiji: 10:11pm On Dec 14, 2019 |
ojeysky:i am on a 48V system and my Inverter even thou MPP but the 5048ms type i will be showcasing the staking of the 2nd 5048ms to get 10KW and 20KW peak soon with additional pylontechs batteries soon |
Re: Solar Energy, A Complement To FTA by solasola(m): 10:13pm On Dec 14, 2019 |
Topmost11:well I concur. those are values for under ideal situations 1 Like |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 10:18pm On Dec 14, 2019 |
solasola: House, for argument /education case. What happens if I exceed the max panel input of the cc? 1 Like |
Re: Solar Energy, A Complement To FTA by solasola(m): 10:28pm On Dec 14, 2019 |
Topmost11:like said earlier, 4 150w should harvest 8x4=32A at peak. but mine never does, just little above 20A at most at peak sunlight.hence I am getting 5A per PV considering distance from PV to my cc. hence adding 2 more panels should work in my case. so with 8 150 panels, i would have little above 30 amps at peak sun array. just saying. 2 Likes |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 10:40pm On Dec 14, 2019 |
House what is the implication of replacing a 4.5ah battery with 7ah or 9ah aside longer run time? I have replaced the follow come battery of my new fan with 7ah battery. One of the reasons I opted for the fan make/model is the 12v battery rather than the 6v models. One other thing, battery gurus and general house. Must a battery be always upside up or I can place it sideways. I ask because if I place the battery sideways, it will enter the battery slot/compartment of the fan and I will be able to replace the cover. See attached pictures. Pix1 will ensure battery enters the slot and cover replaced but it will stand sideways and not upright. Pix2 is upright but battery will sit outside the battery slot. Another question. My bad 5yearold 100ah battery has been idle for months now. Before I stopped using it, it serves during sun hours but lasts 1.5hours after sundown. If I replace the follow come fan battery with it, what is the effect? I am looking at two options 1: charge it with solar via cc once in maybe 5 days or as need arises. 2: allow fan to charge it during sun hours when inverter is on as the need arises. Problem I envisage is with option 2. It means I shall be drawing from inverter to charge it thus my main 200ah battery will suffer it as it may not charge fully since the inverter will be pull load to charge the 100ah battery by way of the fan. Hence my resolve to charge only during sun hour. Pls attack the proposal and give suggestions for improvement . Thanks
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Re: Solar Energy, A Complement To FTA by solasola(m): 10:48pm On Dec 14, 2019 |
[quote author=Topmost11 post=84916360] House, for argument /education case. What happens if I exceed the max panel input of the cc? [/quot for a 150w PV power = 18v x 8.33A = 150w panel ideal situation will give the above. ideal situations exists majorly in the lab. on average I hardly get 5A on each panel hence I have just p= 18Vx 5A = 90w hence 6 panels will give me 520w total.. this is just my approx figures, panel orientation, wiring size and length of wire from the panel to cc are all important 3 Likes |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 11:09pm On Dec 14, 2019 |
desiji: So are you saying that in your 48V MPP inverter you could for instance set cut-off voltage that is above 48V? |
Re: Solar Energy, A Complement To FTA by desiji: 11:22pm On Dec 14, 2019 |
ojeysky:yes beacuse it is the 64V variant |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 11:31pm On Dec 14, 2019 |
solasola: True. So far you don't exceed. But how about period of surge, intermittent surge maybe due to good weather when harvest is good. Anyway we are approaching dry season so you can check the max surge harvest possible . You just opened my eyes to possibility of increasing my panels without changing my cc. I intend buying a 100a pwm cc from Ali express anytime soon. I am targeting 1500watts because of my fridge but will stay 12v rather than 24v. I need to be proactive and forward looking. I would love to go 24v but coughing out 200+k anytime there is need for battery replacement is my fear. So I'd rather stay 12v. Worst is I will power fridge once in 3 days during sunhours. My fridge draws 130watts and another deep freezer draws 140watts. 1500watts panels should do it. |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 11:38pm On Dec 14, 2019 |
[quote author=solasola post=84916919][/quote] 90watts for a panel quoted as 150watts. Hmnn. Physics master used to tell us efficiency is not 100%. This is about 60% |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 11:42pm On Dec 14, 2019 |
solasola: You mean 6? |
Re: Solar Energy, A Complement To FTA by bisi12004: 4:28am On Dec 15, 2019 |
is it possible to connect 48V (24V +24V) solar panels in parallel to 24V (4 in numbers) solar panels 1 Like |
Re: Solar Energy, A Complement To FTA by solasola(m): 4:38am On Dec 15, 2019 |
Topmost11:yes 6 that's a typo |
Re: Solar Energy, A Complement To FTA by solasola(m): 4:58am On Dec 15, 2019 |
! |
Re: Solar Energy, A Complement To FTA by solasola(m): 5:02am On Dec 15, 2019 |
Topmost11:I would not recommend the above for client installation except diy. and as you mentioned, dry season is a factor. but you might still be able to draw conclusions on your peak current on a really sunny day around 12:30pm to 1:30pm, you get peak current and can factor that in your calculations. As per your rechargeable fan. lead- acid batteries are called that name because they contain h2so4 electrolyte which is a liquid.so conventionally upside down or sideways is never encouraged. if you change the follow come battery of your fan with the higher ah but same volt(12), not problem should ensue as you will only have to charge for a longer time. for charging your almost dead battery alongside your working OK batteries, you would eventually kill your new batteries as the older one will try to drop them down to its level. you know solar power is like a sinusoidal wave atimes. I even doubt that your current system charges your batteries effectively. but except you will use a separate PV array and cc for old battery, you should be OK with that. 1 Like |
Re: Solar Energy, A Complement To FTA by Penuelseun(m): 6:23am On Dec 15, 2019 |
Topmost11:24v is still your best bet if you want your system to be efficient, if you are worried about price, you can buy 100ah ×2 batteries, just make sure you power your refrigerator during sun hours with an oversized array 1 Like |
Re: Solar Energy, A Complement To FTA by efuro(m): 6:35am On Dec 15, 2019 |
ojtech8291: I will talk you through it, If you want. DM for guide... to renew your faith in the flexmax family. 1 Like |
Re: Solar Energy, A Complement To FTA by efuro(m): 6:40am On Dec 15, 2019 |
Yes! It is a setting problem No! Not battery related. But snoozing means not charguing thus user may continually drain battery. He can always equalise them later. nonoski: 1 Like |
Re: Solar Energy, A Complement To FTA by kadorzy(m): 6:57am On Dec 15, 2019 |
Trippledots: please I want to jump on this train too.... 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:25am On Dec 15, 2019 |
eleojo23: lol...but actually if the pv is less than needed to charge the battery very well within a day, and the battery is actively being discharged what we should worry about is the depletion of the battery and its eventual death rather than over charging it. 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:40am On Dec 15, 2019 |
desiji: Done. Expecting. Thanks! |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:47am On Dec 15, 2019 |
Deluxe8000: I was gonna cheekily say that most installers here seem to be mid to maxi sized installers and would be at least ready to assist a micro installer with questions and answers....and only few installers have a human face when it comes to pricing. Others go wan use cutlass slice ur acct balance. ![]() 4 Likes |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:53am On Dec 15, 2019 |
Topmost11: that's if he harvests that value steady. A PV module will barely hit and stay at its max readings....factor in maybe 10-20% off its max value for practical scenarios. So i think that 40a cc is ok. 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:55am On Dec 15, 2019 |
Topmost11: Louder pls! they cant hear at the back.... ![]() 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 7:58am On Dec 15, 2019 |
Topmost11: Max input voltage? Will most likely fry your cc....Max input current? a good cc should limit itself to what it can handle. 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 8:01am On Dec 15, 2019 |
Topmost11: electrolyte is liquid and could spill if placed sideways. that electrolyte na acid. 1 Like |
Re: Solar Energy, A Complement To FTA by Deluxe8000(m): 8:11am On Dec 15, 2019 |
earthrealm:The cables are the same. Max instantenous harvest in wh? I don't understand this. My cc is upne-tech 40ah I was not complaining of shading. The panels are rightly on top of my own part of the roof. The cc is also close to the battery. I don't know the voc and vmp of the panels. The 150w mono is 18v and 8.5ah. |
Re: Solar Energy, A Complement To FTA by Deluxe8000(m): 8:36am On Dec 15, 2019 |
Here is pix of the cable and the cc
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Re: Solar Energy, A Complement To FTA by godspeed: 9:12am On Dec 15, 2019 |
earthrealm: Now, the first two pictures are the east side of the building, it is 8 am and it is facing the rising sun. The last picture is the panel on the west side, you can see the sun obscured by the height of the roof. Before the sun reaches the panel on the west side, it'll be Around 11 am. Now, when it is beyond noon, the sun stop facing the panel on the east side but hits it by the side , at this same time, the panel on the west faces the sun directly. This is my temporary fix for now. The third picture is my cc and u can see the instantaneous harvest at beyond 8 ah and it's 8 in the morning. I am surprised that topmost PMW charger is doing almost the same as my MPPT despite similar set up.
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