Hi All,
I'm planning a backpack trip this summer (Porcupine Mtns - 4th time) and from experience I know I'll use a lot of water.
There is plenty of stream water available there and I intend to boil for purification instead of or in addition to tablets.
I'll probably go through close to a gallon a day so I'll need to replenish at least once a day, probably at lunch or dinner stops.
I suspect it is more efficient fuel-wise to boil large quantities, 2 liters versus a half a liter or so at a time.
Anyone else have data on this?
Results from my testing so far.
Nominal fuel consumption 4 oz per hour - I don't have a way to measure that so fuel consumption is estimated, the rest is time and temperature.
Newly refurbished M1950 5500 BTUs - boil times ± - pre-heat time not included
2 liter 54° tap water - mountain cook set- covered - altitude 804 ft -
13 Mins 175°
16 mins low boil 200°
17 mins rolling boil 208°
1.133 oz est fuel used
1 liter same general conditions
10 mins 175°
12 mins low boil 200°
13 mins rolling boil 208°
.866 oz est fuel used
1/2 liter same general conditions
5 mins 175°
6 mins rolling boil 208°
.4 oz est fuel used
If not for the water issue I would probably just bring alcohol burners for cooking to save weight but I don't think they'll do the job (quickly) for large amounts of water.
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