Dearman
Dearman
(OP)
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Dearman
It could be a major PITA to come out to your car, after not driving it for a couple of weeks to find the fuel tank empty.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: Dearman
I think I saw major OH&S issues handling it
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
http://eng-tips.com/market.cfm
for site rules
RE: Dearman
- Steve
RE: Dearman
In this case, the Nitrogen in liquid form is stored mechanical energy like any other compressed gas except that in liquid form it is not under pressure. The pressure is generated as it boils. The recapture of the energy it took to liquify it is probably not achieved with decent efficiency. Also as mentioned, LN2 at atmospheric pressure, like this, boils off continuously.
Nice back yard project. Not an interesting idea, IMHO.
RE: Dearman
I just loved the heath-robinson approach. Why-oh-why did I let 'er indoors beat me into scrapping our shed and replacing it with an unused greenhouse?
I also liked his thinking about improving the thermodynamic efficiency with all that working fluids and heat exchanger stuff. Might need to watch it a few more times and do some analysis.
- Steve
RE: Dearman
slave laborersgrad students) worked up a Grumman mail jeep converted to use LN2. They found that the price of LN2 is driven solely by the demand for liquid oxygen (mostly medical, but also some industrial uses); LN2 is a byproduct that is grossly underutilized. Thus, it can be quite economical to run such a vehicle, though the range is pretty limited...and yes, the minor H&S issues.