A OT note about greenhouse gas and CO2. Gasoline weighs about 6.3 pounds per gallon, and produces about 20 pounds of carbon dioxide when combusted. (it weighs more when combusted because it uses atmospheric oxygen. www.fueleconomy.gov/feg/co2.shtml. The EPA uses a figure of 25 pounds CO2 per gallon of gas, to account for additional CO2 produced in refining operations. yosemite.epa.gov/OAR/globalwarming.nsf/content/ResourceCenterToolsGHGCalculator.html. So a Prius drives about 40 or 50 miles per each 25 pounds of atmospheric CO2 produced, and a Hummer, I hate to think. An average car generates 13500 pounds of CO2 per year. I was wondering how bad I should feel about using LCO2 cylinders for cryogenic cooling of an environmental chamber, or for dispensing cold beer, for that matter. We have to plant lots of trees to soak that up and recycle it to O2 and C!
Knight, I appreciate the Co2 info. Should I decide to go that way I will be careful and 'do it right', using only fittings etc that are intended for Co2 and the associated pressures involved. I am familiar with moisture issues in compressed systems and have used water seperators of various types so I will take these things into account as needed.
Kelvin, Thanks for the air brush type of compressor idea, I will be looking into the Pros and Cons of that method too.
Kramer, Your words of warning are well noted and applicable - Thanks. Good ideas too regarding used equipment - I've taken a look at what is available and I think that eBay, among other sources, will prove to be a great resource.
Tracy, Your comments are well noted too, and I value your opinions via your experience level. This has had a large impact on the direction that the project is going and I now feel that just plain old compressed air is probably the way to go after all -- once a little further into the design, I'll have a better idea of acutal pressure and volume requirements necessary.
Thanks again to all - I so do appreciate the 'brain pool' we have in this forum,
Tracy,
for what it's worth, you'd have to be demented to make CO2 by burning gasoline. There are better, cheaper, lower energy ways all over the place. http://www.uigi.com/carbondioxide.html seems typical.
Sure, there's energy being used, but I don't believe it's anywhere near the levels you're thinking of. The CO2 is essentially being used as an energy transfer mechanism, its release at the end just means that it's being released near you, rather than at some ammonia plant, and at least it's done something useful before release.
Comments
www.fueleconomy.gov/feg/co2.shtml. The EPA uses a figure of 25 pounds CO2 per gallon of gas, to account for additional CO2 produced in refining operations.
yosemite.epa.gov/OAR/globalwarming.nsf/content/ResourceCenterToolsGHGCalculator.html. So a Prius drives about 40 or 50 miles per each 25 pounds of atmospheric CO2 produced, and a Hummer, I hate to think. An average car generates 13500 pounds of CO2 per year. I was wondering how bad I should feel about using LCO2 cylinders for cryogenic cooling of an environmental chamber, or for dispensing cold beer, for that matter. We have to plant lots of trees to soak that up and recycle it to O2 and C!
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Tracy Allen
www.emesystems.com
Kelvin, Thanks for the air brush type of compressor idea, I will be looking into the Pros and Cons of that method too.
Kramer, Your words of warning are well noted and applicable - Thanks. Good ideas too regarding used equipment - I've taken a look at what is available and I think that eBay, among other sources, will prove to be a great resource.
Tracy, Your comments are well noted too, and I value your opinions via your experience level. This has had a large impact on the direction that the project is going and I now feel that just plain old compressed air is probably the way to go after all -- once a little further into the design, I'll have a better idea of acutal pressure and volume requirements necessary.
Thanks again to all - I so do appreciate the 'brain pool' we have in this forum,
Tim
for what it's worth, you'd have to be demented to make CO2 by burning gasoline. There are better, cheaper, lower energy ways all over the place.
http://www.uigi.com/carbondioxide.html seems typical.
Sure, there's energy being used, but I don't believe it's anywhere near the levels you're thinking of. The CO2 is essentially being used as an energy transfer mechanism, its release at the end just means that it's being released near you, rather than at some ammonia plant, and at least it's done something useful before release.
Steve