Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Closed Thread  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-31-2019, 11:48 AM   #8061 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,891

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,423
Thanked 2,914 Times in 1,827 Posts


https://www.theguardian.com/australi...tastrophic-day


https://www.npr.org/2019/11/08/77764...umber-of-fires

https://www.theguardian.com/australi...nds-fuel-blaze

Entire towns evacuated, about 4,000 people forced to escape the fire on the beach, fire tornadoes - strong enough to lift a 10 Ton fire truck and flip it onto its roof, killing the volunteer firefighter in it.

__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
 
The Following User Says Thank You to NeilBlanchard For This Useful Post:
aerohead (01-02-2020)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-31-2019, 12:22 PM   #8062 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 9,410

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 27.07 mpg (US)
Thanks: 3,261
Thanked 3,585 Times in 2,678 Posts
I would expect declining O2 concentrations to curtail fire more than fractions of a degree increase in temperature would encourage them.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
 
The Following User Says Thank You to redpoint5 For This Useful Post:
aerohead (01-02-2020)
Old 12-31-2019, 01:35 PM   #8063 (permalink)
In the fasting lane
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,964

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 52.11 mpg (US)
Thanks: 1,688
Thanked 2,203 Times in 1,427 Posts
Quote:
Originally Posted by redpoint5 View Post
I would expect declining O2 concentrations to curtail fire more than fractions of a degree increase in temperature would encourage them.
O₂ concentration would fall with the rise of C0₂ concentration, I guess that's what you expect?

Well, CO₂ is at 415 ppm currently, up from 200 before mankind.
O₂ is at about 210,000 ppm. Maybe that was 210,215 ppm back then. It is less now... about 0.1 %, or 0.02% of the whole atmospheric content.

Fire is a chemical reaction triggered by heat. More heat, more fire. Even at 0.02% less oxygen.
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.17 Gmeter or 0.1 Mmile.



Investors woes:
"In hindsight, I should have placed a bet on the horse that won the race"
"In hindsight, I should have bet more on that horse"
 
Old 12-31-2019, 01:56 PM   #8064 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 9,410

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 27.07 mpg (US)
Thanks: 3,261
Thanked 3,585 Times in 2,678 Posts
Perhaps.

Fire requires fuel, heat, and oxygen. For every Carbon atom it binds 2 Oxygen atoms. Not only is it removing free O2 to reduce its concentration, but also diluting it with inert CO2.

If temperatures have risen a degree, then going from 300 Kelvin to 301 represents an increase in temperature of 0.3%

I know from much experience building fires that they generate their own heat, and the best way to promote the fire is to increase oxygen, which is why we blow on the fire when it's going out and not build a greenhouse around it.

I'm willing to be wrong though.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!

Last edited by redpoint5; 12-31-2019 at 02:11 PM..
 
Old 12-31-2019, 03:16 PM   #8065 (permalink)
In the fasting lane
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,964

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 52.11 mpg (US)
Thanks: 1,688
Thanked 2,203 Times in 1,427 Posts
Chemistry does not step in line with a % increase on the Kelvin scale.
See https://www.chemguide.co.uk/physical...mperature.html
Quote:
As you increase the temperature the rate of reaction increases. As a rough approximation, for many reactions happening at around room temperature, the rate of reaction doubles for every 10C rise in temperature.

You have to be careful not to take this too literally. It doesn't apply to all reactions. Even where it is approximately true, it may be that the rate doubles every 9C or 11C or whatever. The number of degrees needed to double the rate will also change gradually as the temperature increases.
Mind you, fire starts when a tipping point is passed. Even a small increase in reaction speed can make the difference for a lot of potential fires. A 10% increase in reaction speed, which a 2 degree Celsius increase in temperature would amount to, will have a big effect.

As for CO₂ being inert, so is nitrogen which makes up 79% of the air. The 0.02% increase in inert gases the extra CO₂ stands for is insignificant, unlike its effect on acidity and heat radiation shielding.
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.17 Gmeter or 0.1 Mmile.



Investors woes:
"In hindsight, I should have placed a bet on the horse that won the race"
"In hindsight, I should have bet more on that horse"
 
The Following User Says Thank You to RedDevil For This Useful Post:
redpoint5 (12-31-2019)
Old 12-31-2019, 06:07 PM   #8066 (permalink)
Master EcoModder
 
Join Date: Feb 2010
Location: Elmira, NY
Posts: 1,738
Thanks: 307
Thanked 339 Times in 284 Posts
Nitrogen is not inert.
 
Old 12-31-2019, 06:23 PM   #8067 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 9,410

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 27.07 mpg (US)
Thanks: 3,261
Thanked 3,585 Times in 2,678 Posts
Quote:
Originally Posted by Grant-53 View Post
Nitrogen is not inert.
I meant non-combustible, and RD understood that.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
 
The Following User Says Thank You to redpoint5 For This Useful Post:
RedDevil (12-31-2019)
Old 12-31-2019, 07:28 PM   #8068 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 20,420
Thanks: 5,723
Thanked 6,655 Times in 5,373 Posts
Quote:
Entire towns evacuated, about 4,000 people forced to escape the fire on the beach, fire tornadoes - strong enough to lift a 10 Ton fire truck and flip it onto its roof, killing the volunteer firefighter in it.
Everything in Oz-tralia tries to kill you. Even the fire trucks!
Quote:
Mind you, fire starts when a tipping point is passed.
Hence the term conflagration.
__________________
.
Sandy Munro: Sacred cows make the best steak.
____________________
 
Old 12-31-2019, 10:37 PM   #8069 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 20,420
Thanks: 5,723
Thanked 6,655 Times in 5,373 Posts
Suspicious 0bservers showed the fires in Australia from space. Then put up this:

Whatever's bugging you will get worse. I guess Kek, the ancient god of Chaos wasn't done with us in 2016.


https://3.bp.blogspot.com/-3zXHUA_EG...sysrze_400.jpg

Rays are longitudinal waves. Is that so hard? Entangled particles are hard. I'm still struggling with that one.

https://en.wikipedia.org/wiki/Longit...magnetic_waves
__________________
.
Sandy Munro: Sacred cows make the best steak.
____________________

Last edited by freebeard; 12-31-2019 at 10:43 PM..
 
Old 12-31-2019, 11:09 PM   #8070 (permalink)
EV convert
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 9,615

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 228
Thanked 3,138 Times in 2,457 Posts
In new Mexico the only thing that really bugs me is the locust plague.

Don't read about photon duality before bed.

__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
 
Closed Thread  Post New Thread


Tags
lies, opinion, reality, scam

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com