1470w Poly or 1100w Mono Panels
gjlsan
Registered Users Posts: 4 ✭
Is there a real difference between 6 x 245w Poly Hanwha ($899.95) and 4 x 275w Mono Recom Panther ($908.32)?
Charging Time, Power production, etc.
Hanwha 245w Poly - 14.8% eff, Vmp 30.3V, Imp 8.08A, -0.45%/°C Pmax Temp
Recom Panther 275w Mono - 16.6% eff, Vmp 32.12V, Imp 8.45A, -0.39%/°C Pmax Temp
Charging Time, Power production, etc.
Hanwha 245w Poly - 14.8% eff, Vmp 30.3V, Imp 8.08A, -0.45%/°C Pmax Temp
Recom Panther 275w Mono - 16.6% eff, Vmp 32.12V, Imp 8.45A, -0.39%/°C Pmax Temp
Tagged:
Comments
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Poly panels are slightly larger than same rated mono panels (watts per square foot/meter).
Poly panels tend to be cheaper $/Watt than mono panels.
Personally, if either panel meets your needs, go with the cheaper panels (assuming similar quality and support).
Bill
Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
IMHO, not much difference in most applications. Maybe in space constained locations (higher efficiency may mean being able to get more watts in available space), or extreme climates where the temp coefficient might be a factor.Off-grid.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter -
By the way, can you tell us more about your system?
Where will the system be installed, what voltage and amp hour battery Bank, what type of solar charge controller? Etc.
What are the loads you want to run, etc.
Bill
Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
> @BB. said:
> By the way, can you tell us more about your system?
>
> Where will the system be installed, what voltage and amp hour battery Bank, what type of solar charge controller? Etc.
>
> What are the loads you want to run, etc.
Hi,
I'm in PR and still without power since hurracaine strike. I'm looking for a substitute for my 2k generator.
I'm looking for a 24v system, 2k-4k inverter, 3.92kwh bank (4x6v/245ah) with a 60a mppt controller to run house lighting, tv, fan and small refrigerator (and all the small gadgets chargers). -
I think those are 60cell panels, which might not reliably able to hold Vabs on a 24v system unless at least some are in series.
Another thing to think about is mono's higher Vmp disadvantages PWM further. I assume OP wouldn't be using PWM but if s/he did the poly would generate more power than mono at Vbatt.
-
gjlsan said:> @BB. said:
> By the way, can you tell us more about your system?
>
> Where will the system be installed, what voltage and amp hour battery Bank, what type of solar charge controller? Etc.
>
> What are the loads you want to run, etc.
Hi,
I'm in PR and still without power since hurracaine strike. I'm looking for a substitute for my 2k generator.
I'm looking for a 24v system, 2k-4k inverter, 3.92kwh bank (4x6v/245ah) with a 60a mppt controller to run house lighting, tv, fan and small refrigerator (and all the small gadgets chargers).
Concerning the solar panels, always pick mono over poly, except when it costs you power to do so. If you can buy 1,500 watts of mono panels for close to the same price as 1,500 watts of poly panels, get the mono. Since you will be able to buy 50% more panels with roughly the same money, and get 33% more power from them, the poly panels are the only way that makes sense.
edit: This is the inverter you should buy. Yes, it costs twice per watt what the junk on Amazon costs, but it will last for many, many thousands of hours, and won't drain your batteries in an hour, like the 2-4,000 watt Amazon specials will:
https://www.solar-electric.com/sa1wa24vosiw.htmlDoD= depth of discharge= amount removed from that battery SoC= state of charge= amount remaining in that batterySo, 0% DoD= 100% SoC, 25% DoD= 75% SoC, 50% DoD= 50% SoC, 75% DoD= 25% SoC, 100% DoD= 0% SoCA/C= air conditioning AC= alternating current (what comes from the outlets in your home) DC= direct current (what batteries & solar panels use)
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