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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2300939 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 ceaser: 12:07am On Mar 14, 2018 |
makavele: Hmmm. Assuming it's 175 watts, that means continuous instantaneous current draw on a 12volt system will be around 14.5A. Now that's a lot of current draw, i think. A 24volt system will definitely fare better with less current draw. My issue with the >12volt setups is battery charging equalization and it's life shortening effect on the battery if that concept is ignored. Though I've had three successful DIY 12volt setups, i envisage the 24v setup would require more technicalities which a non-pro like me will find challenging. |
Re: Solar Energy, A Complement To FTA by AKINSULU: 2:57am On Mar 14, 2018 |
Good morning. I want to mount a 300w solar panel over a distance of 30m from the controller. How many mm of cable do I use? sathob: |
Re: Solar Energy, A Complement To FTA by makavele: 3:15am On Mar 14, 2018 |
davodyguy: you can do 1v 200Ah * 24 if you so desire . . as long as the multiplication leads to 24V or your desired voltage |
Re: Solar Energy, A Complement To FTA by makavele: 3:31am On Mar 14, 2018 |
ceaser: 450 watts panel paired to a 30A CC to charge 2 units of 200AH batteries. . oh men .. Kiekie1; food don land oh p.s.: that terminal on your CC is for very light applications e.g. DC bulbs .. and should not be used for items with excessive current draw |
Re: Solar Energy, A Complement To FTA by makavele: 3:33am On Mar 14, 2018 |
zeestone99: Willing to wager a 100k, his 1000va inverter would struggle to start the deep-freezer (most especially when it has defrosted) !! You game edit: except he has a premium inverter (neither chinese nor indian) |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 7:32am On Mar 14, 2018 |
makavele: struggle it may, but if the overload switch doesnt trip..it should start it just fine. my 1.5kva 24v old generation luminous inverter starts by double door 360l fridge, the fridge clocks in at 190w with a watt meter noticed a new trend: lots of newbies not willing to read up/research, and just re-asking already asked questions few threads ago 5 Likes |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 7:46am On Mar 14, 2018 |
I can take you up on this wager bros. A solid 600w and above inverter should carry a sub 200w freezer as the only load with no trouble - I know for sure the ICellPowers and Mustpower (both Asian origin) 1kw can do the job without stress. It's all a question of design and the inverter's internals and real life surge rating - I know of an indian design (name withheld to avoid trouble ) 2kva inverter that would always go into overload whenever a freezer's compressor picked up yet we deployed a 12v 1.5kw Mustpower as replacement and it carried the freezer + other equipment (extra 400watts) like a champ. OP can succeed with his plan if he has the right inverter for the job. makavele: 2 Likes |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 9:24am On Mar 14, 2018 |
earthrealm: You said it all ! 1 Like |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 9:27am On Mar 14, 2018 |
NiyiOmoIyunade: Lol My Man ! |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 10:14am On Mar 14, 2018 |
You may be cutting things too tight with this plan bros. I can assure you that a suitable 12v 1kw inverter will carry your freezer as the only load without stress. The 12v 15amps draw that you are anticipating is not a lot at all - common 16mm DC cable or higher gauge if you are paranoid will do the job with no stress or heat. I believe the cable gauge sizing guide supports this spec and also I routinely run 40amps at ~51volts on 25mm cable without any stress or heat generated. Where I have issues is your proposal to use just one battery and 450watts in panels to run this freezer. Your 450w rated panels will not produce their full rated capacity all through the day so you will be drawing some power from the battery at some point. While 200watts draw from a 2.4kw battery storage is not a big deal, you may find your battery deeply drained or running out of juice on some days especially if you run the freezer after 4pm in the evening or start off early in the day say 6am and also if you will be powering other loads off the battery at any time. The correct way to size panels is to allow for sufficient capacity to BOTH RUN LOADS AND SIMULTANEOUSLY RECHARGE YOUR BATTERIES FULLY within the available sunlight hours. Perhaps again your setup has some on grid/utility or generator charging hours factored in so these could makeup the shortfall. For batteries you want to size them so that they are never drained beyond 50% and they are discharged no more than C20 (I have found locally available C10 batteries do not live up to their spec). So depending on your actual scenario and if you will be adding on other loads you may need at least 2 12v 200ah batteries to make things work out perfectly. ceaser: 3 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by makavele: 11:21am On Mar 14, 2018 |
NiyiOmoIyunade: You're just saying the same thing I said .. I repeat . . . a 1000va inverter would not handle a freezer's or even double-door refrigerator's start-up surge unless he has a premium inverter. |
Re: Solar Energy, A Complement To FTA by ceaser: 11:23am On Mar 14, 2018 |
makavele: I know that 12volt socket output is for light applications o. |
Re: Solar Energy, A Complement To FTA by makavele: 11:24am On Mar 14, 2018 |
earthrealm: He Mentioned 1000VA and about 800VA or so; . . which would struggle like hell. I was in that shoe before. Unless the appliances have been ice-cold from PHCN the previous night, the inverter would never start any of them. Someone even mentioned a trick here; starting the freezer with a generator then switching over to inverter . . . which worked 50/50 for me |
Re: Solar Energy, A Complement To FTA by makavele: 11:24am On Mar 14, 2018 |
ceaser: Good |
Re: Solar Energy, A Complement To FTA by ceaser: 11:26am On Mar 14, 2018 |
makavele: Sadly most inverters above 1000kva that I've come across are specified for 24volts input. I guess i may be restricted to 24 volts set up after all. |
Re: Solar Energy, A Complement To FTA by ceaser: 11:32am On Mar 14, 2018 |
kiekie1: I felt i had little choice with the limited time available. I've read thru almost 120 pages of the thread. Nairaland search tabs has limited functionality as well. Didn't seem i was getting close to finding what i wanted. Hence the pressing need to "re-ask" questions. |
Re: Solar Energy, A Complement To FTA by ceaser: 12:00pm On Mar 14, 2018 |
NiyiOmoIyunade: Okay. So you'll propose two 200ah batteries. A panel size of around 600watts 12volts parallel. That definitely implies an upgraded CC to around 50amps, except i wanna go for the 24volts setup with less CC amp rating, i think. What d'you think? |
Re: Solar Energy, A Complement To FTA by makavele: 12:00pm On Mar 14, 2018 |
ceaser: You'll be doing yourself a lot of favor going 24V |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 12:41pm On Mar 14, 2018 |
ceaser: Hello, I never sampled a 1kva inverter . I posted prices of quality , high surge capability 12v specs ranging from 1000w , 15000w & 2000w respectively and it powers fridge / freezer respectively .. If you are a 12v fan and have 2v - 6v or 12v 200-600a batteries , you can use the 12v set up.. You just get the right guage of solar cable as Mr Niyi mentioned above and install with either pwm or mppt controller.. My mobile number is visible in my signature for detailed enquiry ..... Cheer's |
Re: Solar Energy, A Complement To FTA by ceaser: 12:56pm On Mar 14, 2018 |
kiekie1: That's noted. Thanks. 1 Like |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 1:45pm On Mar 14, 2018 |
Please I need a contact for solar water heater (100 to 200Litres) capacity for a building project. The Protek guy I found had only 300L tank capacities available. Appreciate any help from the honorable members of the house |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 2:39pm On Mar 14, 2018 |
niyiomoiyunade, it seems like solar water heaters have mysteriously disappeared from the market within the space of one year. my advice is to go for the 300 liter capacity that is available.Besides, when it comes to solar water heating, bigger is certainly better. |
Re: Solar Energy, A Complement To FTA by davodyguy: 2:39pm On Mar 14, 2018 |
makavele:So I go have 24 batteries ABI and turn my house to alaba market ABI? |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 3:12pm On Mar 14, 2018 |
My oga. It would appear so o. I have searched high and low and so far no joy for any of the premium brands except Protek who only have 300L capacity. Client wants a roof mount and insists his roof can only support 200L max GeorgeD1: |
Re: Solar Energy, A Complement To FTA by makavele: 3:14pm On Mar 14, 2018 |
davodyguy: . . . if you so desire !!! |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 4:22pm On Mar 14, 2018 |
niyiomoiyunade, unless your client's roof is concrete, i wouldn't advise a direct mount even for a 200 liter capacity water heater. i don't really know why he's avoiding getting a second tower for the water heater but if cost is the overriding reason, he can just modify his existing fresh water tower (at a little added cost) and place the water heater under the fresh water tank. |
Re: Solar Energy, A Complement To FTA by DUNKA(m): 6:26pm On Mar 14, 2018 |
NiyiOmoIyunade:how much is the 300 litres? Is it on any online store? Asked about this a few pages back not got no response |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 7:19pm On Mar 14, 2018 |
DUNKA: Dunka, Good evening. 300L is available in only the pressurized spec which was sold above 1m but currently under promo for 510k range if I can remember. How is the family - my regards ! |
Re: Solar Energy, A Complement To FTA by ANEB(m): 7:41pm On Mar 14, 2018 |
Good evening house! I have been following this forum for more than a week now. I most confess, I have learnt so much from this forum. The willingness of the gurus to respond to challenges presented by newbies like me. Please keep up the good job you are doing. I have a 5kva Ipower plus inverter. My challenge is how to get the data. So I am finally at a point where I can play with the software(WATCHPOWER) that came with my inverter. So I hooked it all up with a USB to RS232 converter. Everything seems to work. I can even hear the relay when I switch output source priority from utility to SBU. The issue I have is on the data logging I cannot select the device in the droplist. Its just not there. It does show the device ID on the main screen on the left Has anybody else experianced this Just to update I finally got it sorted out. An upgrade was all that was required
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Re: Solar Energy, A Complement To FTA by zeestone99(m): 9:10pm On Mar 14, 2018 |
makavele: Well oga at d top has accepted ur 100k challenge, lemme jst do ref jeje |
Re: Solar Energy, A Complement To FTA by makavele: 9:11pm On Mar 14, 2018 |
zeestone99: We are waiting for OP to come and give us his testimony |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 9:28pm On Mar 14, 2018 |
so just doing some mental maths, and its appearing too good, thus am asking some1 else to xchk. 2 x 12v x 200ah batt fully charged, hooked up to a 4kva 24v mustpower inverter, theoritical energy availabe is 4800wh, taking out losses etc, we have 4000wh, the user has a 1.5hp sumo pump and a single 5k liters tank wch takes 45 to 60mins to get filled, so from my calc. to run the sumo pump for 1hr will gulp roughly 1500wh?.....thus the batt would still hv a little juice above the 50% dod mark? |
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