[Gasification] ...a question about hybrids

Mon Jun 12 11:09:24 CDT 2006

Hello, Harmon and All!

Some reason for opposing this idea...

> Although I guess if I was pulling
> the gasifier behind the bus, that long tube carrying 

> the woodgas to the front would be cooling it more 

> than enough.
> 

A long, constantly cooling line going below the dew point 

will make a heck of trouble! It collects a lot of sludge

containing condense and FT waxes + everything 

"microscopic" that may pass the filters! There you have

a never ending cleaning job guaranteed...

Not to speak of how to avoid getting it in the motor.

In winter conditions this is hopeless.

Instead, the trailer should include all the needed stages

of cleaning and cooling and put a ready made gas, clean 

and DRY along the line to the mixer near the intake 

manifold.

This includes: Cyclone, glasfibre filter, cooler 

(as a tube fence on each side of the trailer, where the

"speed wind" is ample), re-heating in a mantle welded

on the cyclone (with a shunt tube having a butterfly

valve to trim the re-heating), truck-size paperfilter.

The re-heated and DRY gas uses the cheap and effective

paperfilter. Then the delivery line needs to be

WELL INSULATED, to keep the gas ABOVE the dew point

all the way to the motor. 

The resulting reheating temperature needs to be about

10 to 20 degrees warmer at the mixer, than at the

cooler output. That is a very small PRICE in filling

volume for the motor, to have trouble free start

and running!

Max 

----- Original Message ----- 
From: "Harmon Seaver" <hseaver at gmail.com>
To: "Gasification" <GASIFICATION at listserv.repp.org>
Sent: Monday, June 12, 2006 4:39 PM
Subject: Re: [Gasification] ...a question about hybrids

> On 6/11/06, Greg Manning <a31ford at inetlink.ca> wrote:
>>
>>  Greetings Mike, Harmon, and list.
>>
>>  Mike I see your point, however, to tote all those 
>> batteries around will
>> pull your average down, BUT... that 900 watt 
>> generator would definitely act like a "trickle charger" 
>> for sure... you now have my thoughts moving in this
>> direction, because where we live is mostly flatland, 
>> and this method of gasifier use, would maximize the 
>> conditions for optimal configuration within
>> the gasifier...
>>
>>  Since I already have a 57 Chevy 1-ton truck that 
>> is going "under the knife"
>> for conversion to gasifier, I am now seriously 
>> considering a small Wisconsin 2 cyl. (TJD) coupled 
>> to a 2-5Kw generator, with a small bank of batteries
>> and a traction motor in leau of the original 
>> gasoline 6 cyl.....
>>
>> I do agree that the mean power factor is only needed 
>> on acceleration, and once the vehicle is up to speed 
>> is only wind and rolling resistance, the engine's 
>> maximum capacity is only there when you need to 
>> pull a load, or up-hill.
> 
> 
>    I've tried to figure out more or less the same 
> question before. I've got a '91 Toyota 4x4 pickup 
> that I'd dearly love to make a hybrid out of, 
> replacing the 2400cc gas engine with a smaller 
> diesel running a generator and an electric motor 
> on each of the two differentials so I'd still have 4wd. 
> And I want at least as much power as it has now --
> that is enough to cruise all day at 75mph with a 
> good load and maintain at least 45mph up the big 
> hills. I think that means about a 15-20hp motor 
> on each differential. And so far the only thing I've
> seen of reasonable price and weight are 3-phase 
> 220v motors -- which creates a problem with 
> finding a proper motor controller and inverters
> to change the 240VDC into 3-phase AC.
>     There is a company which is converting 
> Hummves for the military into hybrids. I don't 
> know what size engine the Hummves have 
> originally, but they are using a 1.9L TDI diesel 
> for the hybrid engine.
>      I've also thought of building a gasifier on a 
> trailer to pull behind my schoolbus/motorhome, 
> although I don't know if I'd go so far as to try to 
> make it a hybrid. That would be neat to do, but
> expensive. I can get the front and rear axles 
> from military surplus 6x6's to put under it, which 
> would be way cool. And all those batteries would 
> solve the power problem, plenty of room for them 
> under the bus. But once again -- where do you 
> get motors powerful enough?
> The bus has a 466TD in it now with a 5spd manual 
> tranny and 2spd rearend, runs great and I can 
> cruise at 65mph with it, but it sure sucks down 
> the diesel. I get about 8mpg, so a gasifier is a 
> must if I want to tour with that rig. I figure I'd 
> build the trailer as a combo gasifier/boat trailer. 
> And running the diesel on veggie oil at the
> same time as on woodgas, the diesel will 
> automagically take the fuel it needs to give full 
> power even tho the woodgas is only capable of
> fueling it to 60% power.
>      I'd also like to put a digester onboard for 
> the toilet, to fuel the gas stove and fridge. BTW, 
> has anyone ever tried using a gas fridge (which 
> uses gas-absorbtion technology to turn heat into 
> cold) to cool the output of a gasifier? Although 
> I guess if I was pulling the gasifier behind the bus, 
> that long tube carrying the woodgas to the front 
> would be cooling it more than enough.
> 
> -- 
> Harmon Seaver
> _______________________________________________
> Gasification mailing list
> Gasification at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/gasification
> http://www.repp.org/discussiongroups/resources/gasification

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