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#1
03-06-2007, 08:13 AM
 cpsuresh Guest Posts: n/a
how to convert 1kg of LPG to liters

hiii all

how to convert LPG from kg to liters? pls suggest.

#2
03-06-2007, 01:19 PM
 Unregistered Guest Posts: n/a
Re: convert lpg from kg to liters

You need the density, which itself can vary depending on conditions.

Some examples; butane is approximately 0.505 kg/L and propane is about 0.575 kg/L.

I could be completely off, though.
#3
03-08-2007, 09:04 AM
 gubment_cheez Ultimate Supreme Bacon Cheese Member Join Date: Jan 2007 Location: Sac-o-Tomato, Cowafornia Posts: 354 Rep Power: 8
Re: convert lpg from kg to liters

additionally, LGP is comprised of a varying ratio of butane to propane (and sometimes, minute amounts of other fuels [~1%]) LPG, generally, is seasonal, with a higher percentage of butane in the fuel during the summer months, and a higher percentage of propane in the fuel during the winter months
Quote:
 Varieties of LPG bought and sold include mixes that are primarily propane, mixes that are primarily butane, and the more common, mixes including both propane (60%) and butane (40%), depending on the season—in winter more propane, in summer more butane. Propylene and butylenes are usually also present in small concentration.
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#4
03-08-2007, 09:15 AM
 Robert Fogt Administrator Join Date: Dec 2005 Location: Seattle, WA Posts: 3,467 Rep Power: 13
Re: how to convert 1kg of LPG to liters

I found a page here that lists the density.
http://www.aegpl.com/htgb/0007.htm

Liquid density at 15º C is 500 to 510 kg/m3, that would be about 0.505 kg/L

kilograms of LPG / 0.505 kg/L = liters of LPG
#5
03-29-2007, 10:12 PM
 Unregistered Guest Posts: n/a
Re: how to convert 1kg of LPG to liters

How to convert 1kg of LPG to liters?
#6
09-18-2007, 01:18 PM
 Unregistered Guest Posts: n/a
Re: how to convert 1kg of LPG to liters

I could be right this is what I think

LPG is a mixture of Propane and butane Gas the mixture varies.

But this is how I worked it out Propane = 1.95 litres per Kilogram Butane 1.74 Litres per Kilogram.

1.95 + 1.74 = 3.69 / 2 = 1.85

6 kilo bottle of propane from calor gas costs £15.49

6 Kilos x 1.85 litres = 11.1 litres x 40.9 LPG price at filling station = 453.99

453.99 / 100 = £4.54

£15.49 - £4.54 = Ripped off by £10.95

Solution buy a refillable bottle problem very expensive do not try to fill calor gas bottles the bottle needs special pressure and blow off valves which standard bottle don't have.

A standard bottle is filled by weight and The ones that you can refill yourself is filled by pressure and thats my answer.

Mick
#7
12-05-2007, 04:07 PM
 Unregistered Guest Posts: n/a
Re: how to convert 1kg of LPG to liters

epa.qld.gov.au/register/p01295al.pdf

is useful in suggesting 1 litre of LPG accounts for 1.8 kilo's of CO2-e and 1 Kilo of LPG accounts for 3.3 kg's of CO2-e - so, approx 1.82 litres of LPG to a kilo
#8
01-11-2008, 05:46 AM
 Unregistered Guest Posts: n/a
Re: how to convert 1kg of LPG to liters

In trying to tie up solar water collector calculations I have this problem as well - so now the question is are you guys talking about about LPG in the gaseous or the liquid form when you mention litres?

I have it from Calor Gas
calor.co.uk/faq/general.htm
that their LPG is equivalent to
13.62 kwh/kg propane or
13.83 kwh/kg butane.

From elsewhere: it may be that
1 kg of liquid = 95L of gas or
1L liquid = 250 L of gas
and
95 kj/L
or
24,700kj/L but is this liquid or gas litres?

It is confusing.

I know Calor charge me per liquid litre - and charge too much, but that's a different story.

I am trying to use heat captured by solar collector to give kwh heat equivalent (got that OK) and litres LPG saved from burning hence cost saved (still working on that).
#9
01-12-2008, 07:51 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: how to convert 1kg of LPG to liters

Quote:
 Originally Posted by Unregistered In trying to tie up solar water collector calculations I have this problem as well - so now the question is are you guys talking about about LPG in the gaseous or the liquid form when you mention litres? I have it from Calor Gas calor.co.uk/faq/general.htm that their LPG is equivalent to 13.62 kwh/kg propane or 13.83 kwh/kg butane. From elsewhere: it may be that 1 kg of liquid = 95L of gas or 1L liquid = 250 L of gas and 95 kj/L or 24,700kj/L but is this liquid or gas litres?
I ckecked the site. Your figures per kg are reversed, butance has the lower energy content per kg. Since commercial gas is not 100% pure, an analysis from your source is probably the best number. For comparison with other figures note that 1 kWh = 3600 kJ = 3.6 MJ

The kilogram of gas will supply the same energy as a liquid or a gas; you just have to know how big it is in those states if you wish to work by volume.

Liquid propane is about. 0.507 kg/L, and liquid butane -.585 kg/L. Thus, 7.01 kWh/L for liquid propane, 7.97 kWh/L for liquid butane.

As a gas, propane has a molecular weight of 44 g/mol, and ideal gas has a molar volume of 22.414 L at 0 degrees C, 1 atm (the conditions for Nm^3). Thus gas density is about 1.963 kg/nm^3. 1 kg should occupy 509 L as a gas. Note that is at 0 C and varies with absolute temperature.
#10
01-12-2008, 08:40 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: convert lpg from kg to liters

Quote:
 Originally Posted by Unregistered You need the density, which itself can vary depending on conditions. Some examples; butane is approximately 0.505 kg/L and propane is about 0.575 kg/L. I could be completely off, though.
These figures appear reversed, compared to other sources. Butane is heavier.

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