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2021-10-18 Beef Needs 43% Of Land

The raising of beef takes 43% of the land but contributes only 3% of the calories.

https://www.technologyreview.com/2019/08/08/133806/giving-up-just-half-your-hamburgers-can-really-help-the-climate/

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2021-10-17 Solar Floats For Floating PV

I was thinking about a design for floats to assemble together to make a floating solar PV array. These floats would be connected together to make a long carrier for multiple PV panels. The floats would have a channel to carry cabling and cable splices. There would be holes to loop ropes through to tie the floats together in a square array.

It would be preferable if the floats were made from recycled plastic waste. Some playground equipment and park benches are made from recycled plastic such as milk bottles, so the same materials can be used for the floats.

The floats would be hollow so they can support the panels. The insides of the floats might be filled with styrofoam or packing particles to prevent sinking in case water got in. The plastic would have to be UV resistant to withstand the sun exposure.

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2021-10-17 7 Reasons Why Nuclear Power Is Not The Answer…

Seven Reasons why nuclear power is not the answer

https://eu.boell.org/en/2021/04/26/7-reasons-why-nuclear-energy-not-answer-solve-climate-change

Quote:

<< Nuclear advocates claim nuclear is still needed because renewables are intermittent and need natural gas for backup. However, nuclear itself never matches power demand so it needs backup. Even in France with one of the most advanced nuclear energy programs, the maximum ramp rate is 1 to 5 % per minute, which means they need natural gas, hydropower, or batteries, which ramp up 5 to 100 times faster, to meet peaks in demand. Today, in fact, batteries are beating natural gas for wind and solar backup needs throughout the world. A dozen independent scientific groups have further found that it is possible to match intermittent power demand with clean, renewable energy supply and storage, without nuclear, at low cost. >>

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2021-10-17 Big Oil Will Be Caught In A Lie Like Big Tobacco?

Will Big Oil be caught in a lie, like big tobacco was caught?

Guardian opinion article

https://www.theguardian.com/environment/2021/oct/14/congress-hearing-oil-exxon-bp-shell-chevron

Quote:

<< For the Big Oil 4 and their public relations advisers, the nightmare scenario is that 28 October will mirror the infamous congressional hearing that led to the downfall of big tobacco. On 14 April 1994, the top executives of the seven biggest tobacco companies in the US appeared before the House Energy and Commerce Subcommittee on Health and the Environment, chaired by Henry Waxman of California. Each executive solemnly testified that, no, they did not think that nicotine is addictive. >> 😡😡😡😡

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2021-10-16 Portable Nuclear Microreactors

It says “…portable, zero emissions power source.”

Those two are mutually exclusive. In order to be portable, the reactor would not be able to be shielded by thick walls of shielding. In order to be zero emissions, it would have to be shielded. And it’s not going to be allowed to be unshielded and unsafe for humans. Right now, nuclear power plants are surrounded by exclusion zones and must be located tens of miles from population areas. Any attempts to do otherwise will be met with extreme resistance from the NIMBYs.

As for “zero emissions,” all thermal power plants must be located close to water for cooling. The thermal power plants use 7 out of 16 liters of total water consumed – that’s almost half. That’s the biggest reason why the thermal power plants are going to be eliminated as climate change makes water scarcer.

<< just because it’s private doesn’t mean it’s going to be run well. Just because it’s public doesn’t mean it’s going to be run poorly. It really is all in the rules. >>

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2021-10-16 Battery Electric V. Hydrogen Fuel

From ::

https://cleantechnica.com/2021/10/15/when-are-we-going-to-stop-doing-stupid-in-the-name-of-going-green/

This article has some excellent recommendations at the end that we should all be doing.

Here are quotes from this article inside

<< >> with my replies.

<< Fuel (fool) cells for light vehicles: Using fuel cells to make electricity from hydrogen made great sense for the Apollo moon mission, and they may make sense for international shipping, midrange aircraft, and possibly long-distance trucking. But they make no sense for light-duty vehicles compared to batteries. Charging and discharging a battery is 90% efficient. By the time you make hydrogen using electricity via electrolysis, compress it, store it, transport it, fuel a car with it, and turn it back into electricity using a fuel cell, you have gone through a process that is much less than 50% efficient. >>

The gasoline powered vehicles called ICEVs (internal combustion engine vehicles) are less than 25% efficient yet there are billions of them working just fine. But there is the mandatory replacement of all gray hydrogen with green hydrogen made from renewables, not fossil fuels. Green hydrogen must be made in huge amounts to be used for making ammonia for fertilizer, and for other industrial processes. Green hydrogen will be mixed with natural gas to cut back on greenhouse gasses. The huge amounts of green hydrogen needed to be generated will bring the costs of green hydrogen down to less than other forms of energy storage including batteries. The efficiency of the hydrogen fuel cell vehicles will not be an issue when the costs of green hydrogen transportation are cheaper than the costs of fossil fuels. The green hydrogen will be made from water electrolyzed by electricity from renewables.

<< Furthermore, it cost me only $120 to convert my garage to charge my electric car for all my local driving. >>

This type of charger requires many hours for a full recharge – that’s why he said “for my local driving” which will take much less time to recharge after a short trip. If you want a fast full recharge after a long trip you will have to go to a charging station which will cost you more. Or if you want to fast charge at home it will cost thousands of dollars for the equipment and installation.

<< A commercial EV fast charging station costs about $10,000. >>

The station itself may cost that much. But that’s not counting the costs for installing higher power electrical service to the charging station. And if the charging station is ‘green’ then it will have a rooftop solar array and battery storage, which will cost more. There have been estimates that the electric grid will have to supply one third more electricity when all vehicles are electric. So there are hidden costs that the author has failed to include in the $10,000.

<< The estimated cost of state-of-the-art hydrogen fueling stations is $2,600,000 — that’s 2.6 million dollars each. The idea of building a nationwide system of hydrogen fueling stations approaching the number of gas stations we have now boggles the imagination. >>

I assume that $2.6 million is for a completely new hydrogen fueling station. There will be some of those at first. But gas stations and compressed natural gas stations will be converted to hydrogen. The costs of land and some infrastructure will be avoided so the overall cost will be less than $2.6 million. And as the number of hydrogen stations grows, the costs will follow the S curve of Wright’s Law and the costs will drop dramatically. Hopefully less than 10% of $2.6 M, especially with the compressed natural gas stations where much of the infrastructure is already there.

<< Only Toyota, Honda, and Hyundai are working on fuel cell electric cars, and they are only doing it to postpone the conversion of our light vehicle fleet from gasoline to electricity. It is not just undesirable or unwise to subsidize hydrogen propulsion for light vehicles, it is a stupid thing to do. >>

Not “Only Toyota, Honda and Hyundai” are working on fuel cell electric cars. Nikola is another one and there are several other companies which have been making hydrogen fuel cells for a long time. The experts have said that the heavy transportation must use hydrogen because batteries are too heavy for propelling heavy vehicles long distance. So the routes that trucks take will require hydrogen fueling stations.

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2021-10-16 Flexfuel Ethanol Is Not Green!

Long ago the federal government made a really foolish mistake: they passed the Flexfuel law. This was supposed to give us fossil fuel independence. But for every gallon of ethanol made it has required a gallon or more of fossil fuels to make it and get it into our gasoline. Dumb!!

https://cleantechnica.com/2021/10/15/when-are-we-going-to-stop-doing-stupid-in-the-name-of-going-green/

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2021-10-15 Blame For Port Shortage Put On California Laws

This post puts the blame for the bottlenecks at the ports of Los Angeles and Long Beach on laws that California has passed.

Quote:

<< John Smith 2d.

This is copy pasta. The NEWS says the California port situation is caused by a driver shortage.

Not so fast: It is in part caused by a California Truck Ban which says all trucks must be 2011 or newer and a law called AB 5 which prohibits Owner Operators.

Traditionally the ports have been served by Owner Operators (non union). California has now banned Owner Operators.

Long term, truckers in California are not investing in new trucks because California has a law that makes them illegal in 2035. The requirement is to purchase electric trucks which do not exist.

And in the words of Paul Harvey, “Now you know the rest of the story.”

BUSINESS

CARB [California Air Resources Board] to begin blocking certain trucks’ DMV registrations in 2020

Carriers domiciled in California with trucks older than 2011 model, or using engines manufactured before 2010, will need to meet the Board’s new Truck and Bus Regulation beginning in 2020 or their vehicles will be blocked from registration with the state’s DMV, the state has said.

The new “health-based requirements” will need to be met before a driver is allowed to register his or her truck through the Department of Motor Vehicles, CARB says. A new enforcement tool used by the DMV beginning in 2020 will automatically block 2010 and older trucks from registration

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2021-10-15 Hydrogen Hub Proposal For Scottish Isles

The green hydrogen will be generated by offshore wind turbines nearby.

https://www.pv-magazine.com/2021/10/14/hydrogen-hub-proposal-for-scottish-isles/

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2021-10-14 Steel Mill Runs On Solar Power

Numerous times I’ve heard these doubt mongers say “… but renewables will never be able to power heavy industry.” And I tell them they don’t know what they are talking about. Now we have a real life example of it being done.

https://electrek.co/2021/10/14/egeb-a-colorado-steel-mill-is-now-the-worlds-first-to-run-almost-entirely-on-solar/

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