daveswarthout at gmail.com
Wed Jan 25 06:00:51 UTC 2017
John mentions LNG in his reply. I'm not sure if Liquid Natural Gas is used
as a motor fuel here in Thailand but they do sell Compressed Natural Gas or
CNG. Both fuels are composed of methane gas. LNG is compressed to the point
that the methane liquifies and therefore requires cryogenically insulated
containers to transport and store it. The CNG is highly compressed as well
but not to the point of liquefaction. Special heavy tanks are needed to
transport and store CNG because the internal pressure is near 3500 PSI. LPG
is liquid propane gas. Propane is a much heavier molecule than methane and
does not require cryogenic containers like either of its cousins LNG and
IMO the shop=fuel tag would not be suitable for these fueling stations.
They would best be tagged with amenity=fuel with subtags fuel:cng=yes or
fuel:lng=yes and in the case of LPG, with fuel:lpg=yes. The difference
between places selling LPG as a motor fuel and those selling LPG for use as
a cooking fuel is that the former would be tagged as an amenity and the
latter as a shop for the same reasons we distinguish such end uses in the
original fuel shop proposition.
LPG stations that service vehicles are never "mom and pop" operations but
rather complex pumping and storage systems similar to those selling LNG and
CNG, that are designed to quickly deliver large volumes of fuel for
refilling the tanks on large vehicles.
On Wed, Jan 25, 2017 at 11:51 AM, John Willis <johnw at mac.com> wrote:
> On Jan 24, 2017, at 9:05 PM, Dave Swarthout <daveswarthout at gmail.com>
> On Tue, Jan 24, 2017 at 10:59 AM, John Willis <johnw at mac.com> wrote:
>> The problem I am running into is that the fuel shops that I am trying to
>> tag **look** like a gas station - but **do not sell gasoline or diesel**.
>> it is not a “gas station” it is a Heating oil stand. it sells kerosene. it
>> is outdoors. it has pumps. some people pull their cars up to it. But they
>> They fill tanks of kerosene.
> Originally, I proposed this type of shop to tag a facility selling to a
> limited crowd and selling specifically motor_fuel for motorcycles and other
> small engine machinery. In fact, my main intent was to avoid confusing
> these fuel shops with "gas stations", which is John's concern also.
> Expanding it to include other types of fuel is a fine idea and in order to
> gain some specificity why not add a fuel=* tag? In the case of motor_fuel
> we already have fuel:octane_91, etc, fuel:diesel to describe the motor
> fuels. One might also use:
> Sounds like a similar use. considering the importance of finding a gas
> station when low on fuel, keeping that tag just for cars seems like a great
> I don’t care if it is pumped or in cans - if it is a shop that distributes
> a non-transport fuel or a transport fuel in non-car quantities - basically
> fuel sold in a non-gasoline stand way - we need a “fuel shop”, as well as
> an amenity or similar tag to add onto other shops (gas stations that sell
> propane, camp sites stores that sell firewood, etc). If it is *worth
> tagging* that they sell it, then it should be taggable. we don’t need to
> tag every item a shop sells unless there is some relevant reason. Heating,
> transportation, and other major pieces of infrastructure should be mappable
> (these are dedicated shops, in my case), and in countries where that
> infrastructure is crude (people selling motorcycle gas in a PET bottle out
> of a shed) - then it is possible that it is _more important_ to be mapped
> because of the tenuous nature of the distribution channels - a mappable
> location by locals would be a good place to go to get what you need, as
> compared to drowning in choices of gas stations in a first world country.
> fuel=motor_fuel (for a more general case or in situations where the
> "octane" rating of the offering is unknown)
> at some point, is “gasoline” too low of an octane grade to not be called
> gasoline? are they selling diesel or oil-mixed 2-stroke gas instead?
> fuel=LPG (for cooking or RVs, not vehicles powered by LPG)
> I have to be careful about LNG vs LPG - Japan’s household tanked-gas
> infrastructure deals with LNG, which is different than LPG.
> I got confused there for a second.
> Or, as some have suggested, substitute "sells" for "fuel" in the
> above tagging scheme?
> Whatever people decide is best is fine to me, as long as we get a method
> to tag these shops - though shop=fuel already implies they sell fuel. the
> fuel:foobar=yes scheme seems appropriate, but whatever is decided upon.
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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