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trouble with solar panels
05-24-2019, 05:59 PM
Post: #1
trouble with solar panels
trouble with solar panels-next monday 7:30 report
25 houses burnt down so far. Blush
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05-24-2019, 06:04 PM
Post: #2
RE: trouble with solar panels
(05-24-2019 05:59 PM)maxhr54 Wrote:  trouble with solar panels-next monday 7:30 report
25 houses burnt down so far. Blush

Pink panels?

Even the bulk of the US press, which spent most of 2020 describing Biden as the best thing since sliced bread, seem to have realised that the Presidency is more like burnt toast.
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08-14-2019, 07:57 AM (This post was last modified: 08-14-2019 08:04 AM by dbeyat45.)
Post: #3
RE: trouble with solar panels
Interesting .... solar farm heat island effect:

" PV panels are thin and have little heat capacity per unit area but PV modules emit thermal radiation both up and down, and this is particularly significant during the day when PV modules are often 20 °C warmer than ambient temperatures, (iii) vegetation is usually removed from PV power plants, reducing the amount of cooling due to transpiration14, (iv) electric power removes energy from PV power plants, and (v) PV panels reflect and absorb upwelling longwave radiation, and thus can prevent the soil from cooling as much as it might under a dark sky at night. "

The Photovoltaic Heat Island Effect: Larger solar power plants increase local temperatures

[Image: srep35070-f1.jpg]

Assuming equal rates of incoming energy from the sun, a transition from (A) a vegetated ecosystem to (B) a photovoltaic (PV) power plant installation will significantly alter the energy flux dynamics of the area. Within natural ecosystems, vegetation reduces heat capture and storage in soils (orange arrows), and infiltrated water and vegetation release heat-dissipating latent energy fluxes in the transition of water-to-water vapor to the atmosphere through evapotranspiration (blue arrows). These latent heat fluxes are dramatically reduced in typical PV installations, leading to greater sensible heat fluxes (red arrows). Energy re-radiation from PV panels (brown arrow) and energy transferred to electricity (purple arrow) are also shown.

Even the bulk of the US press, which spent most of 2020 describing Biden as the best thing since sliced bread, seem to have realised that the Presidency is more like burnt toast.
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08-14-2019, 08:08 AM
Post: #4
RE: trouble with solar panels
Spotted this comment on another forum:

Something to think about when PV are put on the roof and you are in an area where summer in sun temperatures are regularly 35-38C your shingles will have PV modules of 55-58C a few inches above them, that could be risky dependent on the roof materials. Might call for some kind of reflective coating below the PV panels.

Even the bulk of the US press, which spent most of 2020 describing Biden as the best thing since sliced bread, seem to have realised that the Presidency is more like burnt toast.
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08-14-2019, 12:55 PM
Post: #5
RE: trouble with solar panels
also the efficiency of solar panels falls dramatically in hot weather.
the ideal air temperature for a solar panel is 25C.
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08-14-2019, 01:45 PM (This post was last modified: 08-14-2019 01:45 PM by Di Wundrin.)
Post: #6
RE: trouble with solar panels
People are buying dodgy ones that don't conform with Aussie standards which is another pink batt sized time bomb.

Cuz was having a grumble about one of his daughters having bought some that are standard in all ways except that the connections are arse about! They're not suited to where they've been installed as the wiring can't be accessed once they're fixed to the roof!

He's been calling in all his sparky mates and has found the correct fixture fittings that allows access and has to go down to the Central coast and rejig them all. (Yes, he's got the certs for it.) Not happy.

The company won't make the adjustments and it would cost a motza to hire a tradie to do it.

I've had the "insurance issues" conversation with him and he seems confident with it so...? what more can I do?

He has his place rigged with them and they work well enough to cut his bills for 2 peoples' usage. A big family?? probably wouldn't be worth it. He's more interested in being self sufficient off the grid than 'greenie'. He's at the far end of the local grid and they lose power a lot so in his case it's a wise move.

Solar panels have their advantages in the right circumstances but they're not magic bullets.
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08-14-2019, 01:57 PM
Post: #7
RE: trouble with solar panels
I put in solar when my electricity bills started getting close to $1000 a quarter.
Now they range between $350 and $600 depending on the season.
That is for both the house and nursery.
The nursery pumps use about 10klw per pump (have 2). In the heat of summer they run 3 times a day. In winter just the once.

Went through a company that was supplying solar well before it became trendy and all the subsidies came in so they knew what they were doing.
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08-14-2019, 03:24 PM
Post: #8
RE: trouble with solar panels
Good story Totty, they work for those who've thought it through.

There are too many shysters in the game now and they're selling harbour bridges to the unsuspecting.

Some are conned into arrays far exceeding their needs which means that the things never pay back the initil outlay and the owners pay more over the time until they die on his roof than if he'd just paid the lecky bills for grid power.

Others are getting tight, and having less of them intalled than can do the job.

The sellers don't care, they'll just take what they can get from whoever will buy them.

I get at least 3 calls per week from Solar Panel companies touting for business. They all have an Indian accents.
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08-14-2019, 03:41 PM
Post: #9
RE: trouble with solar panels
(08-14-2019 01:45 PM)Di Wundrin Wrote:  People are buying dodgy ones that don't conform with Aussie standards which is another pink batt sized time bomb.

Cuz was having a grumble about one of his daughters having bought some that are standard in all ways except that the connections are arse about! They're not suited to where they've been installed as the wiring can't be accessed once they're fixed to the roof!

He's been calling in all his sparky mates and has found the correct fixture fittings that allows access and has to go down to the Central coast and rejig them all. (Yes, he's got the certs for it.) Not happy.

The company won't make the adjustments and it would cost a motza to hire a tradie to do it.

I've had the "insurance issues" conversation with him and he seems confident with it so...? what more can I do?

He has his place rigged with them and they work well enough to cut his bills for 2 peoples' usage. A big family?? probably wouldn't be worth it. He's more interested in being self sufficient off the grid than 'greenie'. He's at the far end of the local grid and they lose power a lot so in his case it's a wise move.

Solar panels have their advantages in the right circumstances but they're not magic bullets.

Neighbour works for a company that makes a version of the connectors; he recently had to organise to have an entire solar farm in Victoria re-fitted with the proper connectors. BIG JOB!

Even the bulk of the US press, which spent most of 2020 describing Biden as the best thing since sliced bread, seem to have realised that the Presidency is more like burnt toast.
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10-07-2019, 10:52 PM
Post: #10
RE: trouble with solar panels
One of the comments: " We can't even get recycle general waste right ffs. We ship waste to recycle to poor countries which we well know either gets burner or dumped in the ocean. "


If Solar Panels Are So Clean, Why Do They Produce So Much Toxic Waste?

Back story from 2018: Forbes Article

Even the bulk of the US press, which spent most of 2020 describing Biden as the best thing since sliced bread, seem to have realised that the Presidency is more like burnt toast.
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