[Gasification] Gasification Digest, Vol 67, Issue 2

Wed Mar 23 22:33:53 CDT 2016

...however, it's temperature quickly falls! Automotive exhaust systems rust away primarily because of condensation of moisture in the exhaust stream.

Others have pointed-out that condensation is a very effective way to transfer thermal energy, which drives moisture from the interior of fuel particles. This is phenomenon is effectively used in very many counter-flow drying apparati.

Mark

-----Original Message-----
From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of shivanand at infiniteenergyindia.com
Sent: Wednesday, March 23, 2016 7:56 PM
To: Discussion of biomass pyrolysis and gasification <gasification at lists.bioenergylists.org>
Subject: Re: [Gasification] Gasification Digest, Vol 67, Issue 2

Hi Dimitris,

Engine exhaust cannot be saturated because it is over 100 Deg C. Only pure steam can be considered saturated at 100 deg c and 1 atm.

Engine exhaust will have a saturation temperature that is decided by the molar% of H2O in the exhaust.

This is typically around 55 Deg C.

Regards

Shivanand

On 2016-03-23 23:08, Dimitris Tzagkas - KOKARAS AND ASSOCIATES wrote:
> Dear Rolf,Leland,Nicolo
> thank you for your replies,
> but still I got no clue what "saturated" genset exhaust looks like 
> from physics point of view...
> Anybody?
> Best Regards
> Dimitris
> 
> On 22/3/2016 8:00 μμ, gasification-request at lists.bioenergylists.org
> wrote:
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>> Today's Topics:
>> 
>>    1. Drying using a syngas genset exhaust
>>       (DIMITRIS TZAGKAS-KOKARAS & ASSOCIATES)
>>    2. Re: Drying using a syngas genset exhaust (Energies Naturals
>> C.B.)
>>    3. Re: Drying using a syngas genset exhaust (linvent at aol.com)
>>    4. Re: Drying using a syngas genset exhaust (Nicol? Cerni)
>> 
>> 
>> ---------------------------------------------------------------------
>> -
>> 
>> Message: 1
>> Date: Mon, 21 Mar 2016 20:50:01 +0200
>> From: "DIMITRIS TZAGKAS-KOKARAS & ASSOCIATES" <dimitris at kokaras.gr>
>> To: <gasification at lists.bioenergylists.org>
>> Subject: [Gasification] Drying using a syngas genset exhaust
>> Message-ID: <42F812A1CF574A238B33CED7CDEFE230 at DimitrisPC>
>> Content-Type: text/plain; charset="utf-8"
>> 
>> Hello all.
>> Has anyone ever tried to use the genset exhaust of a syngas driven 
>> genset in order to use it in a biomass dryer(rotary or something)?
>> I can read in the literature that the syngas engine?s exhaust is 
>> saturated, but I cannot find experimental data anywhere.
>> What does ?saturated? mean in numbers of relative humidity (%) or 
>> absolute humidity (gr/kgr)?
>> 
>> Best Regards
>> Dimitris
>> -------------- next part -------------- An HTML attachment was 
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>> ------------------------------
>> 
>> Message: 2
>> Date: Mon, 21 Mar 2016 21:59:08 +0100
>> From: "Energies Naturals C.B." <energiesnaturals at gmx.de>
>> To: gasification at lists.bioenergylists.org
>> Subject: Re: [Gasification] Drying using a syngas genset exhaust
>> Message-ID: <20160321215908.f42e41dc1849bfeb92b91d8c at gmx.de>
>> Content-Type: text/plain; charset=UTF-8
>> 
>> 
>> Hallo Dimitris,
>> 
>> no idea if syngas exhaust behaves differently from diesel exhaust, 
>> but the latter comes out at around 400 ?C and can be very well used 
>> to dry wet biomass. It should be mixed with ambient air so as not to 
>> pyrolize or even ignite the biomass.
>> I once spoke to people from Central America who had a very simple
>> setup:
>> A sort of tower where the raw biomass is filled in at the top and the 
>> exhaust/air comes from below in counterflow.
>> They said that the humidity was driven off to the top and dry stuff 
>> could be taken out below.
>> Seems simple...
>> 
>> best regards
>> 
>> Rolf
>> 
>> 
>> 
>> 
>> On Mon, 21 Mar 2016 20:50:01 +0200
>> "DIMITRIS TZAGKAS-KOKARAS & ASSOCIATES" <dimitris at kokaras.gr> wrote:
>> 
>>> Hello all.
>>> Has anyone ever tried to use the genset exhaust of a syngas driven 
>>> genset in order to use it in a biomass dryer(rotary or something)?
>>> I can read in the literature that the syngas engine?s exhaust is 
>>> saturated, but I cannot find experimental data anywhere.
>>> What does ?saturated? mean in numbers of relative humidity (%) or 
>>> absolute humidity (gr/kgr)?
>>> 
>>> Best Regards
>>> Dimitris
>> 
> 
> --
> Φιλικά,
> 
> Δημήτρης Τζάγκας
> Διπλ.Ηλεκτρολόγος Μηχανικός - MSc
> _______________________________________
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