Micro CoGen.

Prime movers, diesel and gas engines => Listeroid/Petteroid/Clones => Topic started by: Capt Fred on November 27, 2009, 06:43:11 PM

Title: Exhaust Length - how far can you go?
Post by: Capt Fred on November 27, 2009, 06:43:11 PM
Most of the year the wind carries my exhaust away from my neighbors so no problem.  Recently had a typhoon pass thru the area and with the change of wind direction exhaust was a bit of a bother for the neighbors (can't imagine why - smells like french fries)

Anyway, how far can I go and with what size pipe?  Ive the specs from lister on exhaust size but would like to go farther than listed in the book.

Cheers, Fred
Title: Re: Exhaust Length - how far can you go?
Post by: BruceM on November 27, 2009, 09:00:06 PM
Fred- I wonder how effective an earth/leach field would be at cleaning up the stink???  From what I recall, at 2" you can go 24 feet  without a problem, after that you have to go larger.
Title: Re: Exhaust Length - how far can you go?
Post by: Capt Fred on November 28, 2009, 04:21:04 AM
thanks gentlemen, I'll try the 4 inch over 60 feet and see what happens.

Oh Yeah, "Supertyphoon Nida" (cat 5 Hurricane) has made it's NorthWest recurve and should be slogging thru the Pacific Northwest in a week or so.

Thanks again, Cheers, Fred

Title: Re: Exhaust Length - how far can you go?
Post by: dubbleUJay on November 28, 2009, 07:27:59 AM
Quote from: BruceM on November 27, 2009, 09:00:06 PM
I wonder how effective an earth/leach field would be at cleaning up the stink???

I have to ask, never heard of the expression "Earth/leach field" ???
Title: Re: Exhaust Length - how far can you go?
Post by: BruceM on November 28, 2009, 09:41:27 AM
Sorry, WJ, I was too cryptic.  Earth mufflers have been used by some Lister/oid owners, for the ultimate in quiet exhaust.

An earth muffler- stick your exhaust into a buried expansion tank (drum), with a perforated  outlet pipe feeding a similar to septic leach-field line (3" gravel or cinders in a buried ditch).  A riser goes at the end of the leachfield. 

By occasionally pouring in water and a nitrogen source, bacterial will eat the toxics, though you wouldn't want to do this with a very shallow water table. 

I just don't know how well it would clean up the air, but certainly some.

Title: Re: Exhaust Length - how far can you go?
Post by: dubbleUJay on November 28, 2009, 09:42:30 PM
Thanks Bruce, now those I know!
I thought you (being electrically minded) had some EARTH cct that somehow trapped particles magnetically or someting! ::)
Just shows you were my mind sometimes wonder too! ;)