Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-18-2008, 03:29 AM   #21 (permalink)
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Waikele, Hawaii
Posts: 108

88CRX - '88 Honda CRX Standard DX
90 day: 32.74 mpg (US)

IS250 - '07 Lexus IS250
90 day: 25.79 mpg (US)

RX300 - '00 Lexus RX300
90 day: 18.38 mpg (US)
Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by ebacherville View Post
OH man what a great idea.. really the CRX is not to much heavier than these thing snad probably more areo efficient..

I want one of these things .. Just make it a 3 wheeler and they can sell them her eint he USA.. 3 wheeler 3 seats would suffice great here int he USA.. if they prove to be safe enough as a three wheeler we have a argument for allowing 4 wheelers to be legalized..

Id feel far safer in one of those than a motorcycle .. Plus out of the weather
Great Point it's probably safer then a motorcycle

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-18-2008, 03:30 AM   #22 (permalink)
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Waikele, Hawaii
Posts: 108

88CRX - '88 Honda CRX Standard DX
90 day: 32.74 mpg (US)

IS250 - '07 Lexus IS250
90 day: 25.79 mpg (US)

RX300 - '00 Lexus RX300
90 day: 18.38 mpg (US)
Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by MPaulHolmes View Post
In L.A., if they compress the air from the atmosphere, then when it's released in the car's exhaust, it won't meet air quality standards. hehe
HAH!!! that probaly true also
__________________
  Reply With Quote
Old 09-24-2010, 02:22 AM   #23 (permalink)
EcoModding Lurker
 
Join Date: Aug 2010
Location: New Mexico
Posts: 41
Thanks: 3
Thanked 3 Times in 3 Posts
Only problem I see with it is...

compressed air tanks are big bombs! They'd have to be subjected to the same sorts of design / test / build standards nuclear waste WIPP transport containers are... Wonder how many bars they put in and how big. Major safety issue IMOP
  Reply With Quote
Old 09-24-2010, 07:41 AM   #24 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,107

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)
Thanks: 2,431
Thanked 2,482 Times in 1,496 Posts
And a tank full of gas is a big fire hazard! Any form of stored energy can be extremely dangerous. This is nothing new. Those tanks can take quite the impact before anything bad happens to them. The weak point is the valve/head. I'm sure it wouldn't take much to create a solid protective cage around it. They do the same for EV batteries, gas tanks, the civic GX's natural gas tank...
__________________
Current project: A better alternator delete
  Reply With Quote
The Following User Says Thank You to Daox For This Useful Post:
Christ (09-25-2010)
Old 09-24-2010, 07:54 AM   #25 (permalink)
ReVolt Enthusiast
 
Join Date: Jun 2009
Location: Michigan, USA
Posts: 239
Thanks: 98
Thanked 41 Times in 36 Posts
Quote:
Originally Posted by nmgolfer View Post
Only problem I see with it is compressed air tanks are big bombs! Wonder how many bars they put in and how big.
Automotive high pressure Hydrogen tanks, and Low pressure Propane tanks already exist that are DOT approved. ??? But it would still depend on the tank pressure needed for the air. ???
  Reply With Quote
Old 09-24-2010, 06:49 PM   #26 (permalink)
EcoModding Lurker
 
Join Date: Aug 2010
Location: New Mexico
Posts: 41
Thanks: 3
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by sawickm View Post
Automotive high pressure Hydrogen tanks, and Low pressure Propane tanks already exist that are DOT approved. ??? But it would still depend on the tank pressure needed for the air. ???
The way to store hydrogen for use in vehicles is in metal hydrides:

United Nuclear - Hydrogen Fuel Systems

totally safe...

No... compressed air scares the heck out of me... I much rather sit on liquid fuel tank... Empty gas tanks are far more dangerous than full ones but nothing like a compressed air tank... Have a look at welding tanks .... those are what the air tanks would have to look like... and then electric batteries start looking much better! No losses compressing the air either which would need to be factored in .... Air motors are efficient (gas turbines have amazing power to size / weight ) but I suspect electric motors are more efficient ... (longer time to recharge though)
  Reply With Quote
Old 09-24-2010, 09:56 PM   #27 (permalink)
ReVolt Enthusiast
 
Join Date: Jun 2009
Location: Michigan, USA
Posts: 239
Thanks: 98
Thanked 41 Times in 36 Posts
Quote:
Originally Posted by nmgolfer View Post
No... compressed air scares the heck out of me...
A carbon fiber tank rated at 10,000psi is what I had in mind: Quantum Technologies - Products
  Reply With Quote
Old 09-24-2010, 10:19 PM   #28 (permalink)
EcoModding Apprentice
 
Bicycle Bob's Avatar
 
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,578

Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
Thanks: 73
Thanked 332 Times in 232 Posts
All other fuels have to mix with air before releasing most of their energy. Even LNG has a relatively trivial energy of compression. Compressed air, OTOH, has all of the energy available instantly, like dynamite. SCUBA tanks are regulated much more stringently than aircraft parts for this reason. If you take one in to be re-filled, and the shop sees a hint of damage, they drill a hole in it, so nobody can fill it.
If this wasn't a stock fraud, I'd worry about whole traffic jams and parking lots going up in a chain reaction.
  Reply With Quote
The Following User Says Thank You to Bicycle Bob For This Useful Post:
Christ (09-25-2010)
Old 09-24-2010, 10:33 PM   #29 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,858

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: 3,358
Thanked 2,862 Times in 1,800 Posts
The whole concept of using compressed air as a storage medium is not very efficient. If my memory serves, the compressed air only stores about 40% of the (electrical?) energy you put into it. Pretty poor ratio...

And, the tank has to weight a big boatload? How far can a 60-80 gallon tank at 2500PSI take you? And talk about lack of infrastructure; it's almost as hard as hydrogen.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 09-25-2010, 12:58 PM   #30 (permalink)
Master EcoModder
 
euromodder's Avatar
 
Join Date: Jul 2010
Location: Belgium
Posts: 4,666

GasDwarf - '13 Volkswagen up! EcoFuel CNG
Thanks: 176
Thanked 639 Times in 506 Posts
Quote:
Originally Posted by Daox View Post
The weak point is the valve/head. I'm sure it wouldn't take much to create a solid protective cage around it. They do the same for EV batteries, gas tanks, the civic GX's natural gas tank...
You can't create a cage that's solid enough to survive any collision - it'd weigh so much it's no longer viable.

On a compressed air tank, you could make (a) rather large weak area(s) where it'd tear open in an emergency.

__________________
GasDwarf's fuel consumption :

Last edited by euromodder; 09-25-2010 at 01:05 PM..
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Comparing Warm Air Intakes (WAI) & Cold Air Intakes (CAI) toomuch EcoModding Central 23 05-26-2019 05:41 AM
Honda IACV explained TomO Off-Topic Tech 16 12-21-2015 01:49 AM
EcoModding for Beginners: Getting great gas mileage. SVOboy EcoModding Central 55 08-20-2012 11:34 PM
The Mechanism Behind Flow Separation LostCause Aerodynamics 46 07-15-2010 07:38 AM
Video: MDI Air car (compressed air powered) Lazarus Fossil Fuel Free 2 01-06-2008 11:37 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com