Not sure what you are saying with coherent v non-coherent?
I was thinking about your multi-fuel problem. I originally was thinking about a triple carb setup, each optimized for a single fuel, this is wonky but should not be a problem for a stationary engine.
Then I went all PV=nRT. If you want to make up for the lower energy content on NG, then you need at least 20% more fuel and not displace the incoming airā¦ The easy way to do that is to simply up the pressure, or maybe better lower the gas source temperature. This would either require differential pressure regulators for NG/LP, or controlling the T of the NG.
I know that none of this is essentially practical, just an interesting problem and thinking through theoretical answers.
True.
But thinking about it revived an interest I had in an old idea that I once tried to patent but for which I could not work out some fundamental issues.
Just donāt restrict the flow of air exiting across the radiator or the necessary air coming in to flow through the generator housing and the radiator. Some manufacturers may require that you remove factory housing if you are providing a building to enclose the unit.
In most designs Iāve done for interior generators, the radiator opening is ducted directly to a wall louver which is larger than the radiator and exits the building into an unobstructed air flow areaā¦i.e. no wall or fence covered with ivy.
Okā¦ i decided I know too little about carburetors. I ordered a couple ( corresponding to the two brand of generators I have) for me to play with and take apart to understand. I might end up modifing them and using them for natural gas or propane only instead of the gasoline/propane/NG arrangement I have today.
I also find some data on effects of altitude. I knew there was an impact but thought one could compensate. Ummmā¦ you can make the generator run better with a different orifice but you will still lose power. At 1000 ft MSL, I should expect to lose 5%ā¦ just for that loss of air densityā¦or is it loss of pressureā¦ not sure. 5% though.
I would think altitude would effect then equally because itās related to amount of air and pressure its under unless your pressure is controlled through a valve/regulator.
We got a day long wind storm in upstate NY. Weather report said be prepared for downed trees and power lines. None where Iām at so far but I needed to be prepared in case power goes down and roads blocked by trees.
So I replaced a 20 ft section of 1/2 inch natural gas hose with 15 ft of 3/4 inch. Definitely got better results with less voltage drop but still about 20 to 25% less power than running with gasoline.
So the natural gas connection is there if I need itā¦ all hooked up and ready to go. But Iām probably going to run on gasoline if it is available. Iām not inclined to modify a carburator or head or do anything very complicated to get more power. Iāll just get another generator.
