Re: GAS-L: Gases for domestic cooking

[Peter Singfield <snkm@btl.net>]

A small note to all:

I doubt they use propane -- probably as here in Central America -- butane.

Higher boiling point of butane means less dangerous operating pressures --
the tropics is "hot" --

We have many vehicles here in Belize converted to running on butane --
already.

But still -- half the btu's per gallon -- compared to gasoline. (Maybe
better ratio -- please feel free to correct -- no time to look it up)

Peter Singfield
Belize

At 09:04 AM 11/20/2002 -0700, Tom Reed wrote: 
>>>>
Dear Nandu et al:  PROPANE is my favorite 20th century fuel  because  It
burns very clean as a gas It stores as a liquid at relatively low pressures
 (<15 atm, boiling point -42C) It is self delivered (no fuel pump) It has a
very high energy both on a liquid, gas and  weight basis  Unfortunately it
is <3% of the oil barrel and as  oil prices go up will be ever less
available to those who need it least.   It can't be synthesized from other
oil components or biomass.  DIMETHYL ETHER, DME is my favorite 21st
Century fuel because   It burns very clean as a gas and is being
considered for diesel engines (and I suspect, spark) It stores as a liquid
at relatively low pressures  (<15 atm, boiling point -42C) It is self
delivered (no fuel pump) It has a very high energy both on a liquid, gas
and  weight basis It is even easier to make from synthesis gas than
methanol, my favorite  liquid fuel    METHANE is not nearly so nice,
because  It is a permanent gas (BP = -164C, lots of energy  to liquefy,
stored in VERY heavy cylinders), so hard to store Pipelines cost >$10/mile.
 Do you have any  domestic methane in India? Less than half the energy of
propane  BIOGAS has most of the faults of methane with only  2/3 the energy
due to 1/3 CO2 content.  However, I wonder if it isn't easier to liquefy
than methane because the CO2 boils much higher AND MAY FORM A  HYDRATE.
Does anyone know about this (i.e. Dendy  Sloan)?    PRODUCER GAS is the
worst of this list because it  contains 50% N2  BUT It is very easily made
by the air gasification of  all sorts of biomass, and can be used locally
for heat or power generation, a  well proven technology (www.gocpc.com)
SYNTHESIS GAS in my favorite synthetic gas from  biomass, since proven
processes exist to make it into methanol, DME, diesel  gasoline or ammonia,
all the necessities of our current civilization.   Comments?  TOM  REED
                         BEF GASWORKS  Dr. Thomas B. Reed
1810 Smith Rd., Golden, CO 80401
tombreed@attbi.com; 303 278 0558  Phone/Fax style="PADDING-RIGHT: 0px;
PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid;
MARGIN-RIGHT: 0px">   ----- Original Message -----    From:
<mailto:adkarve@pn2.vsnl.net.in>A.D.    Karve    To:
href="mailto:stoves@crest.org";>stoves@crest.org    Sent: Tuesday, November
19, 2002 10:38    AM   Subject: cooking devices for rural    India   
  LPG has become popular all over India because of its extreme    user
friendliness.  Housewives have changed their ethnic and cultural    cooking
habits, scrapped their traditional cookpots and purchased new    ones that
suit the LPG stoves. Biogas has the same qualities as LPG but    the biogas
technology failed to become popular in India because everybody was
supposed to make his own biogas. We are working towards establishing
rural enterprises producing and selling biogas.  The so called community
biogas plants have not at all been successful in India, but we feel that we
   have the right formula to make them successful. I am trying to get
funding for    establishing a pilot plant based on my ideas, and shall
report about it when    it gets going.   A.D.Karve  




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