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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2272090 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 juliustip(m): 9:52pm On Feb 03, 2017 |
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Re: Solar Energy, A Complement To FTA by eddyline(m): 5:26am On Feb 04, 2017 |
DMerciful: can the LiFePO4 batteries be used in areas where ambient temperatures can get as high as 44oC? also would the normal Indian inverters be able to effectively charge these batteries? what are the drawbacks of this type of batteries? |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 6:24am On Feb 04, 2017 |
Upper temp range is upto 60°C but its better to run at room temperature of 25-28°C. The ones with BMS(battery management system) are adapted to be used in inverters as the required charging voltage is 14.4v consistent with what is obtainable in inverter. Normal Indian inverter would charge some of the Chinese models including the one I'm expecting. Draw back is high initial cost. Also max continuous current draw is limited to about 80A per battery however u can parallel to get more. But the advantage over lead acid is much. eddyline: |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 6:34am On Feb 04, 2017 |
Your test model is not designed to last hence frequent battery replacement. If you had bought 2*200AH one time and paralled it so that the stress on individual battery is low, it would have lasted far more than the single battery being bought yr after yr. I recommend Lithium Iron Phosphate battery(LiFeO4), they are the latest ultimate offgrid storage batteries with thousands of cycles with d capacity to do 7-10yrs. Also we have the nickel iron batteries that can do 40yrs! Whatsapp me on 08035415969 juliustip: |
Re: Solar Energy, A Complement To FTA by JUO(m): 6:35am On Feb 04, 2017 |
juliustip:your panels are way too small for an off grid system, your load is too much. Your Charge controller must be changed. In fact you are off grid on batteries. I have seen an off grid system running for 2 years without a battery change. Please upgrade your panels and charge controller. It will be nearly impossible for you to consume only 700-1000w daily. Are you aware only one 56' ceiling fan will consume over 700w in 12 hrs 1 Like |
Re: Solar Energy, A Complement To FTA by eddyline(m): 7:28am On Feb 04, 2017 |
DMerciful: thanks. I guess I'll start saving for one then. |
Re: Solar Energy, A Complement To FTA by harveyspec: 7:55am On Feb 04, 2017 |
richmon74: Pls this PRAG 2.5kva what's the Surge capacity? if a fridge starting power is 900w, will it be safe to use this inverter on it? |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 11:14am On Feb 04, 2017 |
harveyspec: Yes .. Prag 2.5kva (1800w) (×3 surge capacity) is cool but ain't in stock for nw.. 2kva is currently #109600 BT can offer u @ #102k. Thanks |
Re: Solar Energy, A Complement To FTA by richmon74(m): 1:29pm On Feb 04, 2017 |
Hi guys It's been a while. Good to see a lot of good stuff happening in this thread. Obviously this is one thread that spells the future. I have tried to scan through most of the pages though unable to get into details. I've come across some very interesting discussions and some very funny ones as well. Some of them which i feel like responding to but when i look at the date i just think the sleeping do should lie. The most interesting thing to me is that many have become renewable energy owners through this thread. God bless the founding fathers. I'll be making my contributions as usual very soon and introducing new products as time goes on. Over the years we've experimented on various designs and materials and i think its time to share the knowledge with the great people of this thread. Congratulations to most people who have become solar power installers with the help of this thread. 6 Likes |
Re: Solar Energy, A Complement To FTA by DUNKA(m): 4:08pm On Feb 04, 2017 |
richmon74:Great to have you back. Really missed your practical and knowledgeable contributions ![]() |
Re: Solar Energy, A Complement To FTA by Obimind1: 4:48pm On Feb 04, 2017 |
richmon74:Gud to have u back. |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 5:26pm On Feb 04, 2017 |
Good to have you back...exciting days ahead! richmon74: |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 8:38pm On Feb 04, 2017 |
richmon, welcome back from the cold. no doubt 2017 is shaping up to be a very exciting year after all. |
Re: Solar Energy, A Complement To FTA by bigrovar(m): 9:30pm On Feb 04, 2017 |
idsolar:+1 mistake most people make. Fail to size their load and consumption and then working their way up. The cost economy of going green makes no sense if u keep changing batteries like recharge cards. Batteries the achilles hill of offgrid solar. It has to be pampered otherwise u lose the green advantage. How do you prolong your battery. Know your battery. Understanding of what battery you have the type and specification is very important in how long it will serve u. AGM, Flooded and Gel all have their own peculiarities from charge and discharge voltage and current. What applies for one don't for the other. Keep charge and discharge within recommended parameters. If you discharge your 200Ah C20 battery at c10 then it's nolonger a 200AH battery it's has effectively become a 180 or even 150AH battery with a different depth of discharge etc. never discharge below 50% this is a golden rule for all lead acid batteries.. how do u know if your battery is below 50% DOD. Well you spend some money on systems that can give u an idea of battery state. From hydrometer in case of Flooded batteries to multimeter for SMF batteries to give u voltage readings (ensuring rest voltage don't go below 12.1v) but if u really want to keep an eye on your battery. Get a battery monitor with a current shunt. This can tell you how much has left your battery in terms of watt helping u have an idea of discharge depth vis a vis battery capacity. Some of this items cost less than 10$ on Aliexpress . Also ensure to properly cycle your battery. Nothing kills lead acid batteries than leaving them in partial state of charge. Ensure to properly charge your battery to full at each day discharge. Never make a habit of using your battery today.. leaving it partially charged and then discharging it against tmr. The rule of thumb to make this easy to achieve is never to take from the battery more than you can give back. Although I have a 220AH battery at 24 volt which is about 2600AH at 50% DOD. I never discharge it more than 1500wh a day (about 29% dod) not because I can't go further but because if I do I might struggle to charge the battery back to full with my 660w panel array. Thankfully since my system went online my battery always gets to float every single day. Battery rest voltage never dropped below 24.7 Avoid parallel connection if I can. Rather it's always better to go on higher voltage than current. Parallel connection no matter how well installed have a knack for not being evenly charged. Even where u follow all the rules of using bus bar with Equal length cables .. as long as batteries even same brand have different internal resistance u will always have issues where one battery gets better charge than others you can mitigate the problem by using a battery balancer but that's just more money. Going for higher voltage is just a win win. I hope more guys can chip in on how best to preserve ones battery. For me Lithium based batteries are still too bleeding edge the tech is just not yet as matured as lead acid.. I will maintain a wait and see before I can consider it. 8 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by efuro(m): 10:30pm On Feb 04, 2017 |
GeorgeD1: I completely agree with you. Oga richmon u've stayed away too long. I have everyone here to thank profusely b/cos am enjoying 24hrs electricity with style since I discovered the great house. Thank you all! 2 Likes |
Re: Solar Energy, A Complement To FTA by Chuckdee(m): 11:01pm On Feb 04, 2017 |
richmon74: Welcome back!...Looking forward to all you got to share from your wealth of knowledge! |
Re: Solar Energy, A Complement To FTA by Obimind1: 11:35pm On Feb 04, 2017 |
efuro:Same here, this thread on Nairaland has helped me so much. The amount of knowledge I've gained here is unimaginable. I see myself never being tired of going thru this thread times without number. I enjoy 24 hours light, thanks to you all who gave ur time to impact knowledge in me. May God bless u all. 2 Likes |
Re: Solar Energy, A Complement To FTA by efuro(m): 12:49am On Feb 05, 2017 |
bigrovar: hmmmmmmmmmm Voltage (v) versus Current (amp) ![]() ![]() ![]() lower voltage => lower heat more amps (mppt, pwm) higher voltage => higher heat greater amps (mppt) having battery-cable distance in view. hmmmm true talk! |
Re: Solar Energy, A Complement To FTA by Konnektions146(m): 8:20am On Feb 05, 2017 |
bigrovar: Bigrovar, I read your post with some intrests, if may ask- - which region do you live in? - what's your average harvest in KWH daily? - u stay alone or have people at home when you go out for the daily business? I ask these cos some information here can be misleading "I have 24/7 power" "I have not used gen in 20years" " My TV and appliances run all the time" Etc etc I have installed some systems for customers and they are doing pretty well , I own one as well though not that a big one but I am sure and know how RE guys are monitoring and watching their systems like hawks. When u are home, u can manage all these, when yu are not, women ![]() Except for a few inverters that's got some adjustable DOD settings, most dip more than 50%. In a bid to paint an awesome image, we tend to make certain comments that make some new guys feel they have issues with their systems. I always tell any prospective client, we do a load calculation and you know what to expect,(sometimes I over estimate so that when the customer gets more, he would be happier) Alot of installers don't even do any load check, they dump a system which most probably is well done but undersized and the client would say "this thing no dey work" We post images of our systems best moments , yes it's a good thing but I need us to be more clear to make new guys know certain factors could get Dem less back up time. I installed a 1000w solar system with a 3kw,4800wh inverter+battery for my mum and the stuff has been amazing, The major load in her house is a deep freezer and a TV+decoder and fan. And the system has an uptime of about 90% ,that's because she manages it well enough with timer switch for the freezer. About lifepo4, its still very young but I ay just give a shot at it when I have some $ to spare 5 Likes |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 1:00pm On Feb 05, 2017 |
Bigrovar gave an excellent deposition and solutions on what and what not to do if you want battery longevity while you gave a realistic situation and recommended Oversizing. You guys are great but I lean towards your angle more cos u're not d only user of d system to be able to really control DoD. For instance ur battery is 50% already and its still 10pm...what will you do? Shutdown d inverter and put on generator you have abandon for 1 year? Or stay in darkness? Mind you there may be cloudy weather the previous day and no NEPA light for a week. Why buy batteries of so much capacity and u're limited to only 30%? We need a battery revolution, LiFeO4 or Nickel iron are d way forward! Mind you with current cost of deep cycle lead batteries, its already at par with LiFeO4 cost wise. LiFeO4 ti take over ![]() Konnektions146: |
Re: Solar Energy, A Complement To FTA by bigrovar(m): 1:21pm On Feb 05, 2017 |
DMerciful: Just to add, I stay in abuja north centralish.. I think we have more sun hours and intensity here than down south. My 3 panels probably equivalent to what 4 or 5 panels do in lagos. I need to throw that out there. |
Re: Solar Energy, A Complement To FTA by Konnektions146(m): 2:12pm On Feb 05, 2017 |
bigrovar:Cool explain, your location is a huge factor, my mum stays in Nsukka , Enugu state and harvests more than I do even when I have about 400w more than she does , I live in akwa ibom. Also your solar panel will always smile cos of the cooling cos they ground mounted , I have been studying about solar farms lately and this is one of the major factors especially when they install close to the sea or use as farm/grazing,. You have really worked on your system and I can only say...Kudos! 3 Likes |
Re: Solar Energy, A Complement To FTA by Konnektions146(m): 2:16pm On Feb 05, 2017 |
DMerciful: Bros, that moment moment eh, I no dey shut down the system oo, I dey use am , maybe my lady is doing something in preparation for tomoro work and school, battery say make I shut down..... Dmerciful, I have been reading all your analysis about other batteries and you are gradually pushing me , make I speak to my battery guys In china and see what I get 2 Likes |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 2:53pm On Feb 05, 2017 |
Speak to them and let us know....I already ordered one...when it comes will definitely do a review. Konnektions146: 2 Likes |
Re: Solar Energy, A Complement To FTA by Monlo(m): 4:12pm On Feb 05, 2017 |
DMerciful: We shall await your reviews here on arrival and usage of your............ RE all the way.Kudos to the founding fathers of this great thread.Posterity will always will always be directed here,whenever a Google search on solar stuff is done by the unborne generations...... 5 Likes |
Re: Solar Energy, A Complement To FTA by goddyior24: 6:51pm On Feb 05, 2017 |
The EPSOLAR Tracer 2210RN 20A is rated at 260w maximum panels. I do not understand. I need clarity. |
Re: Solar Energy, A Complement To FTA by mank1234(m): 9:00pm On Feb 05, 2017 |
goddyior24: It's rated so because for a 12V system, 260W/12V ~=20A. If it can work with 24V system then you can use 520W of panel. If you go beyond this max panel ratings your system would still work but you're wasting money because the excess power would not be harnessed. |
Re: Solar Energy, A Complement To FTA by goddyior24: 9:27pm On Feb 05, 2017 |
EPSOLAR Tracer 2210RN 20A mppt controller is rated at 260w maximum solar panels. If you want to go close to the 100v for more efficiency, your panels wattage will be more than the 260w. How can you get 80v still being within the 260w Limit?. I need clarity. |
Re: Solar Energy, A Complement To FTA by efuro(m): 10:13am On Feb 06, 2017 |
goddyior24: Is that what the manual says? why not consult properly from dealers before buying items. most solar enthusiast here will gladly offer you good -free advice without consultancy fee. mind you 20A mppt cc cannot have upper limit of 260w please do your sizing properly to enjoy your sweat otherwise you will think "solar thing" dont work ![]() ![]() 1 Like |
Re: Solar Energy, A Complement To FTA by Saipro(m): 11:29am On Feb 06, 2017 |
richmon74: It's nice to have you back. The words in bold ... regardless of how far back the post might be, you might have different (yet better) perspective than was presented at the time of discussion. Kindly highlight your observations and if possible, discuss them. Every day is a good day for learning. Thanks! 2 Likes |
Re: Solar Energy, A Complement To FTA by efuro(m): 5:14pm On Feb 06, 2017 |
goddyior24: am sure you are referring to the following specs Specification Summary System Voltage 12 / 24VDC Rated Battery Current 20A Rated Load Current 20A Max. PV Input Voltage** Tracer-2210RN 100VDC Tracer-2215RN 150VDC Max. PV Input Power 12V System 260W 24V System 520W *Array voltage should never exceed maximum PV input voltage. Refer to the solar module if you read further on the manual you also find "If the solar input current exceeds the maximum rating, the array will be disconnected automatically". what stops you from configuring your panels on hot sunny day to get the upper limit since it has auto shutdown. let us have your test results when you can carry it out.
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