Difference between revisions of "Camping Interior Gas"
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|+'''Butane and Propane properties''' | |+'''Butane and Propane properties''' | ||
| '''Property''' || '''Propane''' || '''Butane | | '''Property''' || '''Propane''' || '''Butane''' | ||
|- | |- | ||
|Volume expansion ratio ||274||233 | |Volume expansion ratio ||274||233|| | ||
|- | |- | ||
|Calorific Value/cu.m||95.8||126 | |Calorific Value/cu.m||95.8||126|| | ||
|- | |- | ||
|Relative Cal Val by weight||1.0||1.12 | |Relative Cal Val by weight||1.0||1.12|| | ||
|- | |- | ||
|Boiling Point (C)||-42||-0.5 | |Boiling Point (C)||-42||-0.5|| | ||
|- | |- | ||
|Vapour Pressure (bar)||7||2 | |Vapour Pressure (bar)||7||2|| | ||
|} | |} | ||
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Thus Butane is not suitable for use in English winters, as it won't vaporise well (or at all) much below freezing. | Thus Butane is not suitable for use in English winters, as it won't vaporise well (or at all) much below freezing. | ||
'''H&S''' They are both heavier than air so should not be used nor stored underground, nor stored ''near'' drains and cellars | |||
-- | -- | ||
Revision as of 12:56, 5 September 2008
Gas Bottle tare weight
campervankatie: Hi Im trying to work out how much gas I have left in my gas bottle.
From memory I think it was 24llbs full. Does anyone know the weight of an empty calor gas 4.5 kg Butane bottle (blue)so i can work out how much I have left. I have one of those regulators that change colour according to amount of gas, but it doesn't seem that good.
According to the Calor website the empy weight of the bottle is printed on the aluminium collar on the gas bottle in pounds and ounces. I have 3 bottles and each shows a different weight on the collar which confuses me a little.
Lloyd: 12 10 stamping is empty bottle weight (in lbs and ozs)
12 lb 10 oz is 5.7386 kilo. Your bottle weight of 6 kilo bottle is 13.2 lb.. 13 lb 2 oz - 12 lb 10 oz bottle weight on tag means bottle = 9.2 oz, so should have that much gas left in bottle... 5 kilo of gas plus 5.7386 kilo bottle = 10.7386 kilo which is what a full bottle should weight or 23 lb 10 oz.
When you are using gas and pressure / flame drops at near empty tank, there is still a little gas left in the tank. That's why it weights a little more then tag says.
Use propane bottles in ours and have found this kind of calculation to be accurate.
Bowton Lad: I have one of those Gaslow (green/amber/red) gauges & it isn't really much good. My gauge was reading green & within 5 minutes the grill in my camper was struggling & the gas ran out. It didn't give any warning that the gas was about to run out.
The bottle I swapped was a 5kg one with 12.10 on the collar. The replacement is the standard 4.5kg bottle & it has 14.10 on the collar. (6.6338 Kg)
Types of gas
Butane and Propane are saturated hydrocarbons of the Alkanes (paraffin) family Commercial gases contain traces of other LPG type gases They are characterised by being more easily liquified at lower pressures than Natural Gas, and are derived directly from oil field gases or from the distillation process of oil products
H&S They are both heavier than air so should not be used nor stored underground, nor stored near drains and cellars
| Property | Propane | Butane | |
| Volume expansion ratio | 274 | 233 | |
| Calorific Value/cu.m | 95.8 | 126 | |
| Relative Cal Val by weight | 1.0 | 1.12 | |
| Boiling Point (C) | -42 | -0.5 | |
| Vapour Pressure (bar) | 7 | 2 |
Thus a given mass of Butane will contain 12% more energy than that of Propane.
Thus Butane is not suitable for use in English winters, as it won't vaporise well (or at all) much below freezing.
H&S They are both heavier than air so should not be used nor stored underground, nor stored near drains and cellars --
Where to buy gas
Gas in Europe
Harrymann: You might be told that Camping Gaz (small blue bottles) are readily sold in almost very French High Street...
Well they might have been but they're not now... and if they are the price will vray incredibly! From Euro 19.54 for a refill exchange 2.5 kg in French provincial towm to Euro 24 for a complete new 4.5 kg tall bottle in Andorran campsite
