Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations KootK on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Things are Starting to Heat Up - Part X 13

Status
Not open for further replies.

dik

Structural
Apr 13, 2001
25,677
For earlier thread, see:

thread1618-496010
thread1618-496614
thread1618-497017
thread1618-497239
thread1618-497988
thread1618-498967
thread1618-501135
thread1618-504850
thread1618-506948

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Replies continue below

Recommended for you

What we appear to have here is an annular lift fan arrangement. The aircraft's cabin appears to be surrounded by a huge ring-shaped duct, into which at least one large-diameter, many-bladed fan is mounted.

Maybe that's the flying saucers everybody thought were alien spacecraft years ago...
 
as long as they're carbon free... There could be some significant changes to air transport. We'll have to wait and see.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Well, we're now past the point of no return. Greta Thunberg quoted a climate scientist that said we only have 5 years to quit using fossil fuels or the destruction of the planet was inevitable. It's now five years and one day later. Sorry folks, we're all doomed.
 
There was no time limit on that, other than the five years to 'fix things'. I hope he's wrong... but we'll find out, one way or the other. [pipe]

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Our illustrious Turdeau at work, again.


There is very limited green value to aerospace... the kid (his dad was a worse prime minister than he is) doesn't seem to catch on very quickly.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Power grids are taking a beating, it appears:

"Heatwaves are pushing power grids to their brink around the world — a risk that can make an already dangerous situation deadly.

When temperatures spike, people tend to need air conditioning the most. But that can put a lot of pressure on a power grid, potentially triggering a blackout if there isn’t enough electricity on hand. That’s the worst-case scenario grid operators across the world are scrambling to prevent.

Close to 28.8 million people are under heat alerts today in the US. Texas grid operator ERCOT broke its June record for electricity demand on Monday after issuing a “weather watch” for June 15th through 21st and asking residents to voluntarily conserve energy. In Texas and across the border in Mexico, temperatures soared above 110 degrees Fahrenheit (43 degrees Celsius). A state of emergency was briefly declared Tuesday by Mexico’s National Center for Energy Control as electricity supplies dipped to their lowest levels since a 2021 cold snap."


-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
dik said:
"Heatwaves are pushing power grids to their brink around the world — a risk that can make an already dangerous situation deadly."

Careful the way you phrase this.... An argument can be made that any "dangerous" situation is being caused by a reluctance to embrace fossil fuels more. Meaning that if we don't have sufficient power to support Air Conditioning demand then we are creating the potential for deaths during heat waves. And, of course, fossil fuels are still the easiest, most cost efficient ways of providing electrical power.
 
I didn't phrase it, it was the article... and if you read the article or finish reading the intro, there's no confusion...

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Still, JoshPlumSE makes a good point. One could argue what's making the heat wave dangerous is the lack of available and affordable energy, which is the result of politicians dictating the shuttering of reliable and cheap fossil fuel power plants, in favor of less reliable and more expensive 'green' energy sources, which in some cases aren't even available yet.
 
That's what is causing the problem... you don't want to add more to it. By using fossil fuel power you likely are...

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Dik -

The point is that there is a different way of looking at it. Increased heat is only dangerous if people die from it. The reason why people don't die from excess heat today the way they did decades ago is because we have abundant access to AC and energy / power. Ergo if we see increases in deaths due to extreme heat then it is because of TWO causes that occur simultaneously:
a) Extreme heat. One can argue that this is NOT a new event. Or, one can argue that this is occurring more frequently.
b) We don't have sufficient power to protect people from extreme head (i.e. by using air conditioning).

This is one of the things that many climate alarmist miss.... That, despite the fact that we have much greater populations in high risk coastal communities, we've seen deaths due to weather / climate events go down dramatically. Why? Because we have advance human understanding of how to deal with them. This is despite the increase in temperatures that have occurred in the last 100 years. The stats would suggest that this trend (of fewer deaths per capita due to climate events) will likely continue.

This trend was (at least partially) due to how the use of fossil fuels have advanced our lives. Especially in the case of heat deaths and air conditioning. Ergo if the trend reverses and goes up, it is reasonable to suspect that this is due to the climate alarmists preventing us from have the kind of power supply that has saved us from such events in the past.

The logic behind this premise is not all that complicated.

Now, your logic is simple as well. Hotter temperatures due to climate change = deaths due to CO2 emissions. And, I get it. But, the trend of climate related deaths over the last 100 years doesn't seem to agree with that logic. In fact, it directly contradicts it.
 

or their lives are seriously disrupted by it... death is not the only criteria. A lack of effort may cause deaths in the future.

This is what Florida looks like... looks pretty ominous to me... We'll see what the end of next year looks like. [pipe]

Clipboard01_ejq8jv.jpg


-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Careful what you ask for... [pipe]

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
dik said:
This is what Florida looks like... looks pretty ominous to me...

Well, it looks like Climate Change is real. Which I don't dispute and I know very few people who do. I don't know that it looks ominous. Certainly not Greta Thunberg ("wipe out all humanity") type of ominous. Maybe "I'd prefer to live somewhere a little cooler" is about as far as I'd go. That's not ominous, just mildly inconvenient.

We're talking 2 degrees Celsius. So, that's a change from 75 to 77 degrees not so bad. Even if we're talking 100 to 102 degrees. That's just a little more uncomfortable. But, the humidity is the real problem in Florida, not the temperature.
 
Changing by 2deg is a little bigger than just going up 2deg. The whole system is energised by that amount of energy, which can have some awesome effects. Whole systems can be affected. We'll likely have to wait and find out what the consequences are... [pipe]

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Yet as we have seen, reducing the temperature differentials Arctic to tropics reduces the energy in the cyclonic behavior. Thermodynamics 101.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376
 
That brings up a very good point. All climate studies I have seen talk about 2°C. An increase of 20°C to 22°C is a lot more alarming than an increase of 293K to 295K.

I will no longer interpret the errors as alarmism but instead as ignorance. I truly believe the climate scientists don't understand the most basic of physics and all of the articles posted by dik reinforce that belief.
 

and some people believe in toothfairies. Beliefs can be in error. There's an awful lot of science out there, and our current weather seems to corroborate it. [pipe]

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Josh,
75 to 77 Celsius makes my cup of tea about right. But 100 to 102, that's unrealistic.
 
Is this the future of hydrogen?

"Alan Finkel, the former chief scientist and author of Australia’s National Hydrogen Strategy, has admitted that hydrogen cars are unlikely to be sold in great numbers because they simply can’t match the convenience and performance of the battery electric car.

Finkel is uniquely placed to make such a judgement, as the author of the landmark hydrogen strategy, and as an owner of both an EV, and one of the few owners in Australia of a hydrogen electric car: He drives a Toyota Mirai.

In an interview this week with the Energy Insiders podcast, on The Driven’s sister site RenewEconomy, Finkel says it is now clear that hydrogen will not be used in reticulated gas systems for home heating or home cooking, because of its expensive and because of the difficulty, and the slowness with which the industry has moved."


-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor