[Newfie]

Interesting.

There have been other posts claiming a high wind turbine blade failure rate or short life span. I could not find documentation to back that up. Si I would appreciate some reading material on that topic.

The UK and Germany have been letting big off shore wind contracts in the past few years. Negative bidding wars make the cost SEEM quite reasonable, but I don’t know how they are actually doing, I think still in build phase.

Anyway, some links would he good. Though I admit that 1,000 pager was a bit over my concentration level. The summary was good.

[Pops]

$this->bbcode_second_pass_quote('Mustard', 'S')o in conclusion, renewables are probably going to go into decommissioning next year. From there growth will stagnate and eventually go negative. Renewables were struggling before Obama, the ARRA gave them 3-7 years of bubble, now they are a declining industry heading into a wall of depreciation.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', '
')Just from basic physical equations the turbine is going to be totally destroyed after six months.

[Plantagenet]

$this->bbcode_second_pass_quote('Mustard', '
')Just from basic physical equations the turbine is going to be totally destroyed after six months.

[Pops]

I don't get what heating water has to do with anything? Most cement is milled dry. Or is there more than the normal amount here that I don't understand?

This paper says energy payback is about a year even with global shipping and normal - not optimized- energy costs:
$this->bbcode_second_pass_quote('', 'L')ife cycle assessment methodology was used to perform a quantitative analysis and rating of the construction and operation of a wind energy plant through the case study of the Glacier Hills Wind Park.
The energy payback ratio (25.5), energy payback time (12.2 months),
...

Analysis of the result also shows that up to 22 % of the energy consumed and CO2(eq) produced during the life cycle transportation stage is due to the overseas shipping of major wind turbine components to the United States, either for direct installation at site or to domestic manufacturing plants.
...
In the material production category, the consider-able emissions from the production of the large volume of Portland cement used in the concrete foundation may be significantly reduced by replacing a portion of Portland cement with cementitious fly ash
...
Furthermore it was observed that after the material production and manufacturing category, the earthwork and construction category accounted for the highest GHG emissions in the project. These values are heavily influenced by fuel combustion during mechanical crushing and transportation of haul road and crane pad base layer material.

[theluckycountry]

It's a sad reality that all these renewables are turning out to be re-buildables, rebuilt with oil and coal. The 1000 tons of concrete and untold steel in the wind tower foundation is a classic example of this. Cement clinker, the active ingredient in cement, is hugely energy intensive to make.


https://marketrealist.com/2014/08/must- ... ts-cement/

Power and fuel

The cement industry relies on power. Power and fuel costs account for ~30% of the price of cement when it’s sold. As a result, power and fuel have a major impact on the company’s operating expenditure. Coal is used to fire the kiln. Different varieties of fuel—diesel, coal, pet coke, and lignite—are used to grind the clinker in the kiln. Cement plants require different amounts of power based on the heat treatment process that’s being used. Energy consumption hovers around 60–70 kilowatt hours (or kWh) of power per pound of clinker produced.

We are talking temperatures above 1,300° C. Try doing that with solar reflectors.

here is a more comprehensive chemistry based article https://www.sciencedirect.com/topics/en ... nt-clinker

[Newfie]

Stay tuned, it will catch up eventually.

[Plantagenet]

$this->bbcode_second_pass_quote('Mustard', 'G')as engines are efficient because the gas is under pressure and approximates a solid.

[Outcast_Searcher]

$this->bbcode_second_pass_quote('Pops', '')$this->bbcode_second_pass_quote('Mustard', 'S')o in conclusion, renewables are probably going to go into decommissioning next year. From there growth will stagnate and eventually go negative. Renewables were struggling before Obama, the ARRA gave them 3-7 years of bubble, now they are a declining industry heading into a wall of depreciation.

[Outcast_Searcher]

$this->bbcode_second_pass_quote('Mustard', 'L')et's do a little extrapolation of German wind decommissioning.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', 'L')et's do a little extrapolation of German wind decommissioning.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', '')$this->bbcode_second_pass_quote('AdamB', ' ')Looks to be some phoney baloney graph, which identifies one of the few users who specializes in such things.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', '
')Get dennis here, tell him Texas wolfcamp crashed.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', 'D')umping some analyses.

[AdamB]

$this->bbcode_second_pass_quote('Mustard', 'S')till learning the 3rd rule of reservoir dynamics.

[theluckycountry]

$this->bbcode_second_pass_quote('Newfie', 'I')nteresting.

There have been other posts claiming a high wind turbine blade failure rate or short life span. I could not find documentation to back that up. Si I would appreciate some reading material on that topic.