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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2272334 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 yemisolar(m): 4:09pm On Jan 26, 2020 |
ojtech8291: You can contact me in my signature or drop your number |
Re: Solar Energy, A Complement To FTA by mcTrinity(m): 4:14pm On Jan 26, 2020 |
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Re: Solar Energy, A Complement To FTA by mcTrinity(m): 4:17pm On Jan 26, 2020 |
AyarmBoye: Is that actually 200W? Like, Two hundred Watts.... Or you meant to write 20W? 200W on 18ah Battery is a suicide usage. Maybe, you've actually murdered the battery and that's why it goes off immediately at power outage 3 Likes |
Re: Solar Energy, A Complement To FTA by saint2ace(m): 4:21pm On Jan 26, 2020 |
Topmost11: Yes cables, laptop charger head accessories, and male and female adapter's, was shipped with Yenwen and it took just 3weeks |
Re: Solar Energy, A Complement To FTA by AyarmBoye(m): 4:30pm On Jan 26, 2020 |
mcTrinity:bro it's a new battery... All I just need is 1 minutes to shut down my stuff..... I think it should be able to handle 1min now... |
Re: Solar Energy, A Complement To FTA by Saipro(m): 4:38pm On Jan 26, 2020 |
Saipro:Thanks for the patronage! |
Re: Solar Energy, A Complement To FTA by Penuelseun(m): 5:18pm On Jan 26, 2020 |
earthrealm:On the contrary, a 650va ups outputs around 1amp |
Re: Solar Energy, A Complement To FTA by mctfopt: 7:19pm On Jan 26, 2020 |
AyarmBoye: Backup Time = (Battery capacity x 12V x N x Efficiency of the inverter or pf) / Load (watts) 12V= voltage of the battery N= number of batteries in the system Efficiency= 70% ( I usually assume a lesser value of efficiency for a more accurate estimate, but I will use 70% or 0.7 for this calculation) Backup Time = (18 x 12 x 1 x 0.7)/ 200 = 0.756hours or 45minutes So ideally you should get a 45 minutes backup time But in theory things are hardly ideal. Charging time of battery = Battery Ah / Charging Current Assuming the UPS has a 2A charging current, it'll take it 9 hours to fully charge the battery www.nairaland.com/attachments/10948338_xwzef_png85ead5b87abc2fd4c8c924cb0ea9bf4a Let's say that this is a battery with 7Ahr capacity and that you want to draw 14A. You'll have to observe the 2C curve (2C means to discharge at 7Ahr*2/h=14A). You'll note that this battery will drop to 9.5V-10V after about 15mins. Of-course this is only true for a fresh from the shelf battery kept at 25 deg.Celsius. Temperature, age and usage negatively affect the performance. But the truth is, using 18AH battery that is obviously not fully charged to backup a load of 200w may likely not give the desired results. |
Re: Solar Energy, A Complement To FTA by viazi: 7:45pm On Jan 26, 2020 |
Pls between LG dual inverter AC and Termocool Gen pal, which is better in terms of energy saving and cooling?. Thanks in advance. |
Re: Solar Energy, A Complement To FTA by AyarmBoye(m): 8:21pm On Jan 26, 2020 |
mctfopt:mehn..... Alright thanks bro... I will get a bigger battery plus charger den... God bless |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 10:20pm On Jan 26, 2020 |
AyarmBoye: 2 HUNDRED WETIN?? ![]() ![]() ![]() ![]() |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 10:42pm On Jan 26, 2020 |
am looking for a budget install for borehole water supply.1k or 2k liters tank am looking at 3 options. has anyone deployed any of the options listed , or has a superior option to recommend to me. note: 2 x 250w panel , 850va luminous hybrid inverter, 12v 200ah quanta battery, 12/24v 100voc fangpusun 50aD mppt CC already exists in the house option 1: get a dc sumo pump and power it directly from solar panels fitted with overflow regulator option 2: get a normal 0.75hp or 0.5hp sumo pump, get 2 x 12v 200ah batts or equivalent LIPO4 and 4 to 6 units of 250w panels, with a 2kva or 2.4kva hybrid inverter with surge capability option 3: get a battreyless inverter and connect the sumo in option 2 directly. 6 x 250w panels needed |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 10:44pm On Jan 26, 2020 |
viazi: I use the 1.5hp Gen pal and on least cooling (L1) It peaks at 700w. I think I heard LG peak at 900w on its lowest cooling. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 10:48pm On Jan 26, 2020 |
earthrealm: Option 3 may be most effective though(depends on the type of cc) am not sure 6 panels will be sufficient. You may plan for 8 Option 2 will be my second preference though the lifpo4 variant ;-) |
Re: Solar Energy, A Complement To FTA by unicmarket: 10:50pm On Jan 26, 2020 |
earthrealm: Option 2 is your best bet; The sun variations is different; the presence of batteries in your is also to cover up for this variations, for instance the sunlight goes down, the battery then bridges the gap. |
Re: Solar Energy, A Complement To FTA by netotse(m): 10:59pm On Jan 26, 2020 |
Barezzi: Hey Chief, any progress on your pylontech moves? can I holler at you outside here? |
Re: Solar Energy, A Complement To FTA by JUO(m): 6:22am On Jan 27, 2020 |
earthrealm:please note 0.5hp ac sumo is 700w. Just get 24/36v dc sumo, consumption is around 200-320w. Your best bet is 24v/200-320w, you can parallel 2pcs of 24v/200w to achieve this, no inverter, battery, controller is needed. Just avoid ac pump. This option is cheaper |
Re: Solar Energy, A Complement To FTA by gentlesas(m): 7:09am On Jan 27, 2020 |
HETER LIFEPO4 BATTERY NEEDED THE 480WH MODEL WITH OR WITHOUT CHARGER |
Re: Solar Energy, A Complement To FTA by AyarmBoye(m): 7:41am On Jan 27, 2020 |
earthrealm:me I just need 1-2 minutes for me to shut down.. Lobatan...... But it won't even last 1 second... And battery nah new.. Don't think ups is charging it sef |
Re: Solar Energy, A Complement To FTA by simydan(m): 8:45am On Jan 27, 2020 |
earthrealm: Option one will be very cost effective as it will take away the cost of inverter, CC and battery. You only need to buy a DC pump. Look at the PIC if you may have interest in any... Note: for option one you may have to consider your storage tank to be of large capacity so it can cover up for cloudy days. 1 Like 1 Share
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Re: Solar Energy, A Complement To FTA by earthrealm(m): 9:06am On Jan 27, 2020 |
thanks gents for the suggestions. seems the dc pump is a better option. am wondering if anyone is running such, lemme tap from his experience. 2ndly is the pump easily available in nigeria? or aliexpress..hence the need to purchase 2 pumps, incase of 1 going bad 3rdly, can i hook it up directly to the solar panel, without battery? 4thly, if answer to 3 is yes, i am considering retaining the old inverter setup, however the output from the panels will be split into 2, one going to sumo...the other going to the CC of the existing setup i wish to automate the whole system, with auto flow shut off, so the system will be independent of human input, as setup is in the village. a regulator will be installed in the tank to cut off power...when tank is full...and also activate power when the water gets to a certain level. the water demand is minimal, say 200 liters daily, so a 2k liters tank shud last 1wk or so. borehole depth is btw 80ft to 130ft. most pumps are rated flow/hr like 2000ltrs/hr...or 30L/minute , can i simply divide by 24hrs to calc the hourly flow rate....abi the pump is designed to work 24/7?? |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 9:17am On Jan 27, 2020 |
AyarmBoye: ok, u can use a clamp meter to check if battery is charging? 2ndly, even though its new, the battery may hv sulphated /damaged while in the sellers shop. so you may consider buying a new battery, if you confirm ups is charging |
Re: Solar Energy, A Complement To FTA by generalstingz(m): 10:15am On Jan 27, 2020 |
Beep us today for Chargers, BMS, PCB for your LiFePO4 batteries of any capacity |
Re: Solar Energy, A Complement To FTA by JUO(m): 10:53am On Jan 27, 2020 |
earthrealm:pm |
Re: Solar Energy, A Complement To FTA by JUO(m): 10:55am On Jan 27, 2020 |
earthrealm:send pm |
Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:14am On Jan 27, 2020 |
earthrealm:Hit me up sir - 08168986461 2 Likes
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Re: Solar Energy, A Complement To FTA by ceaser: 1:08pm On Jan 27, 2020 |
ojeysky: But the DC out voltage of the provided charger is 14.8v (for a 12.8v nominal battery). So I suppose 14.8v charge will be okay. Besides I noticed that the battery has more backup time when the max solar charging voltage gets to the 14.0v pre-set than if it stays at around 13.7v/13.8v on days that insolation is not maximum. |
Re: Solar Energy, A Complement To FTA by ceaser: 1:12pm On Jan 27, 2020 |
justcallmenuel: HBD to the guy that brought up to the thread the latest competition in solar offerings. Any promo for patrons from Manuel solar to mark the anniversary? ![]() 4 Likes |
Re: Solar Energy, A Complement To FTA by BRIGHTSOLAR(m): 1:28pm On Jan 27, 2020 |
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Re: Solar Energy, A Complement To FTA by ceaser: 1:30pm On Jan 27, 2020 |
simydan: I think early death of the battery from overcharge rather than the risk of explosion is about the only fear we can have when it comes to LFP. I can't say the same for Li-on. I have abused LFP to some extent without dire repercussions that I can have some confidence in the chemistry. For want of longer back up, I have parallel a 40ah 12.5v nominal LFP and another 40ah 13.5v nominal LFP. That's sone serious voltage mismatch alright. But it charges to 14.5v setting on the SCC and drops to 13.3v at sundown. After use for about 4 hrs, the voltage drops to 12.7v, it then gradually çlimbs up to 13.0v and remains there until about 5hrs when the second reduction begins. My guess with that anomalous voltage trend is that the bigger 13.5v pack begins to charge the smaller 12.7 nominal explains the initial rise after the initial 4hrs 12.7v drop, after which the two batteries reach an equilibrium at 13.0v and then another drop cycle commences. |
Re: Solar Energy, A Complement To FTA by ceaser: 1:39pm On Jan 27, 2020 |
saint2ace: Bro, that stuff should not exceed 12.7v o. In fact the old one doesn't exceed 12.5v mark, but the newer ones reach 12.7v. Also your backup time can only be comparable to the stock batteries that came with your laptop. This is because it is the same configuration as 3s2p that most laptops come with. Hence your backup from the power bank will roughly be the same as your laptop's, total backup of the two should be double. Also the backup is a function of the battery capacity. I mostly have 2200mah 18650 batteries in my collection. There is one guy on NL that advertised selling 18650. Will locate the thread. |
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