You don't need a licence to squash air. I'm not proposing a fuel - I'm proposing to drive the diesel engine with windpower.
A 2009/1/28 David Schnare <[email protected]>: > In the U.S., use of a compresion ignition engine requires certification of > both the fuel and the engine (by EPA), and limits the amounts of priority > pollutants that may be emitted from such an engine. These include NOx, SOx > and particulates, all of which will emerge from the scheme you are > discussing. > > In a regulatory state, nothing is as easy as it seems. > > David Schnare > > > On Tue, Jan 27, 2009 at 8:33 PM, Andrew Lockley <[email protected]> > wrote: >> >> You don't need a combustible fuel-air ratio provided that the >> combustion doesn't need to be self-sustaining. Once the correct >> temperature is reached, any methane present will oxidise. The >> advantage of using a diesel engine is that it runs with minimal energy >> input as the temperature can be changed without irrecoverable energy >> input - the mix cools as it expands. I thought about using a jet >> engine - essentially an adapted turboprop or high-bypass turbofan, but >> I think it would be more lossy. >> >> I don't agree that you'd be processing 'a few hundred cc'. I envisage >> building vast arrays of wind turbines, all connected to huge marine >> diesel engines. >> >> Why would you need a catalytic convertor? The CH4 just oxidises to >> H20 and Co2. I can see the benefit of a heat exchanger, and I already >> thought of that. >> >> I covered the issue of hydroxl radical - it's created by ozone >> photochemistry, so the best way to manipulate it seems to be by >> delivering ozone to the stratosphere. >> >> A >> >> 2009/1/28 dsw_s <[email protected]>: >> > >> > Compression ignition requires a suitable ratio of fuel to air. Even >> > if compression in a diesel engine perfectly removed methane from the >> > air, you're not going to process the atmosphere a few hundred cc at a >> > time. To remove methane from the air, I see two options: increase the >> > amount of hydroxyl radical if there's enough methane to deplete it, or >> > as you say build air-cooled CSP plants. For the CSP option you would >> > want a counter-flow heat exchanger and a catalytic converter on the >> > outgoing air. >> > >> > On Jan 27, 2:03 pm, Andrew Lockley <[email protected]> wrote: >> >> If you fixed up diesel engine to a wind turbine, you'd get compression >> >> ignition of any methane residue in the atmosphere, even without >> >> injecting any fuel. This would be expensive, but I think it would >> >> work. >> >> >> >> An alternative would be to pump air through concentrated solar power >> >> plants >> >> >> >> Any thoughts? We appear to need some bright ideas on methane >> >> remediation pretty soon. >> >> >> >> A >> > > >> > >> >> >> > > > > -- > David W. Schnare > Center for Environmental Stewardship > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
