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Post Info TOPIC: Solar panel ques.


RV-Dreams Family Member

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Solar panel ques.


what is the difference between 

Monocrystalline panel

and a

Polycrystalline panel?

Which does a better job?

Thanks for replies.



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09 Montana 3665re

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CJSX2fromCT wrote:

what is the difference between 

Monocrystalline panel

and a

Polycrystalline panel?

Which does a better job?

Thanks for replies.


 http://www.jackdanmayer.com/Solar_panels_and_controllers.html

"In general, the monocrystalline cells are slightly more efficient, and thus produce panels that are slightly smaller for a given output. This difference is not that great however, and I would not use it as a major buying criterion."

 



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Monocrystalline panel are long lifespan.

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Ben R Woody


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benwoody wrote:

Monocrystalline panel are long lifespan.


 They're also more efficient than poly in direct sunlight. I've read poly works better across a wider array of lighting conditions, but I don't have enough experience of my own to be able to say definitively.



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RV-Dreams Family Member

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The difference is not enough to worry about.

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Winnebago TT 2101DS & Chevy Tahoe LTZ, 300 watts WindyNation solar - parallel w/MPPT, 2 Trojan T-125s. TALL pole for USC & historical flags. 14 year Army vet. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state & county campgrounds



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But, you know, Larry, those monocrystalline panels are just so damned SEXAY!!!

HAWT!!!

Can solar panels ever really be SEXAY???



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RV-Dreams Family Member

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I’ve been known to install items on my SUV and TT for looks too.

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Winnebago TT 2101DS & Chevy Tahoe LTZ, 300 watts WindyNation solar - parallel w/MPPT, 2 Trojan T-125s. TALL pole for USC & historical flags. 14 year Army vet. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state & county campgrounds



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LarryW21 wrote:

I’ve been known to install items on my SUV and TT for looks too.


 Then you cannot help but buy monocrystalline.

HAWT!!!



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Read HandyBobs Blog.

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carolinakids wrote:

Read HandyBobs Blog.


 Why?



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I find Handy Bob....hmmm...not fun.

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Winnebago TT 2101DS & Chevy Tahoe LTZ, 300 watts WindyNation solar - parallel w/MPPT, 2 Trojan T-125s. TALL pole for USC & historical flags. 14 year Army vet. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state & county campgrounds



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Old_Man wrote:
carolinakids wrote:

Read HandyBobs Blog.


 Why?


 https://handybobsolar.wordpress.com/ and judge for yourself.  HandyBob has good information buried under an anti solar installer attitude and a "my way is the only way" view.   He has actually mellowed over the years.  Originally he would only recommend one solar controller, did not believe any solar sellers were competent, didn't like MPPT, and he actually told me I had to change my breakfast to eat exactly the same as he did.  



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bjoyce wrote:
Old_Man wrote:
carolinakids wrote:

Read HandyBobs Blog.


 Why?


 https://handybobsolar.wordpress.com/ and judge for yourself.  HandyBob has good information buried under an anti solar installer attitude and a "my way is the only way" view.   He has actually mellowed over the years.  Originally he would only recommend one solar controller, did not believe any solar sellers were competent, didn't like MPPT, and he actually told me I had to change my breakfast to eat exactly the same as he did.  


 Hey, I'm as "anti" as anyone these days. But if someone begins ragging on my dietary choices, I may have to go full-on Al Pacino from "Scent of a Woman." Leave the smart folk to their smartness.



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RV-Dreams Family Member

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bjoyce wrote:
Old_Man wrote:
carolinakids wrote:

Read HandyBobs Blog.


 Why?


 https://handybobsolar.wordpress.com/ and judge for yourself.  HandyBob has good information buried under an anti solar installer attitude and a "my way is the only way" view.   He has actually mellowed over the years.  Originally he would only recommend one solar controller, did not believe any solar sellers were competent, didn't like MPPT, and he actually told me I had to change my breakfast to eat exactly the same as he did.  


OK, I've read enough. While I agree with him about salespeople and most people being stupid (I SURE AM!!!), his anger is inappropriate in its intensity. I found myself thinking, "Dude, nobody cares." and I thought I was negative. Yeesh. I'm a piker compared to that guy.. I do believe his heart is probably in the right place. Like I said, I thought I was angry.

Is "HandyBob," an nom de plume for the ubiquitous, annoying and ultimately paranoid schizophrenic, Bob Wells? It reads the way Bob talks. Does HandyBob have a tin foil hat? Is he scared to death of chemtrails? Aliens? (Never let him near the VLA or Jodie Foster. Poor Jodie...) LIBERALS??? (you'd think we had crab lice or something)

I also disagree with him regarding how much power a given rig needs. His basis for comparison is his own system, which is fine, but his POV and his approach, well, you know, flies and vinegar. At least when I write like that, it's on purpose, calculated for whatever impact I want to have. In many ways, HB reminds me of my younger self, arguing guitar gear. You think solar is a contentious subject? Get a young guitarist on the subject of overdrive pedals and disagree with him/her. You'll have WWIII on your hands. These days I just tell them, 'listen with your hears. listen with your heart, listen with your hands. Serve the song. If you want better tone, learn to play better."

With solar, it's not quite as subjective, There are measurables, and predictable results which can be analyzed. Who's right? The person paying the bill? Who knows? Who cares? Does your system work for you? Only that matters.



-- Edited by Old_Man on Wednesday 14th of February 2018 02:22:31 PM



-- Edited by Old_Man on Wednesday 14th of February 2018 02:24:44 PM

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Buying the right controller and using larger wiring makes upgrades easy is the advice disregarded most often. Too many don’t and I wish my controller was a 40 and not a 30 amp max.

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Winnebago TT 2101DS & Chevy Tahoe LTZ, 300 watts WindyNation solar - parallel w/MPPT, 2 Trojan T-125s. TALL pole for USC & historical flags. 14 year Army vet. Prefer USFS, COE, BLM, USF&WS, NPS, TVA, state & county campgrounds



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LarryW21 wrote:

Buying the right controller and using larger wiring makes upgrades easy is the advice disregarded most often. Too many don’t and I wish my controller was a 40 and not a 30 amp max.


 You are correct, sir! I can tell you I am not disregarding it. Bought a foot of 4/0 just to practice with.

On the off chance you're disregarding my choices, ok, whatever. :)



-- Edited by Old_Man on Wednesday 14th of February 2018 04:13:17 PM

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