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How to make your own home solar. With Pictures + solar book
- Thread starter awinahe
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Sa cdr King if you are in the province or sa Raon if you are around Manila (but beware of fake sa Raon!)
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Sir BluePirate bigyan kita ng tip, wag ka magtipid sa solar panel mo yan kasi ang pinaka mahirap ikabit sa set up ng solar power.kaya dapat magandang klase talga ang panel para sa efficiency ka babawi.mag ingat ka nga lang sa mga fake panel tulad ng sinabi ni mam awinahe,pero kung branded ang bibilin mo 101% sure na di ka magsisi sa gastos mo...salamat
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First I'm not very knowledgeable about tie grid system...
I think it depends on what you intend to do. If you want to use a tie-grid inverter ONLY with an off grid system it could be possible (but I'm not sure of that!!) as long as the inverter is not connected to the grid.
If you want to use a tie gird inverter both for charging your batteries while using the inverter directly from the panels, you use what we call a hybrid inverter which is made for this kind of use...
Note: pure sine wave inverters exist also for off grid system!
Edit: the more I think of it and the less I'm sure that a grid-tie inverter could work solely for an off grid system!!! because of the difference of voltage from the grid...
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Hybrid inverter system... marami seller/installer sa Solar Power Philippines FB group...
An example of power flow in a hybrid inverter system. The inverter can direct power to a load or the grid if needed, or store it in batteries if not. It can also use power from the grid if needed. -
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nga pala bro yung solar power kit mo ba nasubukan mo na bang magdamag na naka on yung ilaw kahit isang bulb lang?
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Ang design ng power kit na yan ay DAPAT mapa-ilaw ang 2x3W led bulb ng 12 hours from a full charged 12AH battery... tapos itsa-charge maghapon (without load) ng 20W panel para ma-full ulit... kapag linagyan mo ng load habang nagtsa-charge, posibleng hindi mo aabutin ang 12 hours na ilaw lang kasi baka hindi na-full ang battery.
Therefore, kung hindi na nya napapa-ilaw ng 12 hrs ang 2x3W led bulb, either hindi full charge ang battery OR malapit na masira ang battery (bumaba na ang capacity nya).
How to tell if the battery is bad?
Answer: Load Test the battery. If the battery appears to be fully charged but when a load is applied, the voltage instantly drops, then the battery is bad. So what do you do? Continue to use it until it becomes unusable... then replace the battery.
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my estimates:
17w (average) AC bulbs to run 17.3 hours (average) using 500W inverter (>80% efficient)
DoD of Battery after 17.3 hrs running:
* if 40ah = 68%
* if 70ah = 39%
* if 100ah = 27%
therefore, para tumagal ang buhay ng battery dapat ay 70ah or 100ah ang gagamitin.
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As said Sir Tristan 70 Ah is ok but to make sure that your bat will last better take a 100 Ah... especially considering the inevitable losses.... what about controller & panel?
Sir Bali yun 3pcs 12watts and 2pcs 7watts.. kakayanin n yung 70ah or 100ah n battery to run po ang mga ilaw... Controller ko sir 10am pwm panel 1 60watts and 1 20watts.. meron n ako bat 2pcs 26ah ..
palagay ko ay marunong ka mag-compute, kasi halos eksakto ang mga components mo sa target mo na 18 hrs na pailaw, (mga panels, 10A pwm at 2pcs 26ah battery)... HOWEVER, kung ilaw lang naman ang gamit mo DAPAT ay 12VDC led bulbs na ang gamitin mo para sigurado na mare-recharge mo ang batteries (wag mo na gamitan ng inverter, kasi hihigop pa yan ng amperes)... dyan kasi sa setup mo, kapag makulimlim ay posible hindi ka maka-FULL maghapon.
using 52ah battery (2x26ah), after running 18 hrs, IF you use the inverter the DoD is 52%, compared to 47% DoD if you use DC led bulbs.
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Thank you sa Pagreply sir.. kaso sir naka linya nah mga cables ko para sa 220 supply..
then i hope your are using LED lights... ako yung mga fluorescent lamps ko kapag napupundi ay LED ng ang pinapalit ko... ang 7W led ay kasing-liwanag na ng 17W fluorescent... ang laki ng natitipid.
Yes Sir all LED led po mga ilaw sa Bahay.. proven ko na kase na makakatipid .. Kase before sa bahay ng parent ko nka fluorescent light din sila ngaun, pinalitan ko lahat ng 10watts and 12 watts LED light ayun bumaba ng 200 to 300..
