Advantages (?) Of Regulator Valved Stoves, Operate 2
In my first post on the subject, I linked to a video produced yesteryear Soto Outdoors showing their Microregulator Stove (OD-1R) inward a "burn off" against a non-regulator stove. The video seems to imply that at that topographic point is some payoff to having a regulator valved stove inward mutual coldness weather condition over a conventional needle valved stove.
There's simply ane work here: It doesn't brand feel from the standpoint of physics in addition to chemistry. I mean, the relative delineate per unit of measurement area inward a canister is a business office of the fuel inside, the delineate per unit of measurement area outside, in addition to the temperature. Compressed gases, such equally those inward the canister of a backpacking stove, follow for sure rules of physics in addition to chemistry. Changing the valve type won't crusade that delineate per unit of measurement area to change. I've talked to engineers, chemists, in addition to physicists. No ane seems to recall that a regulator valve volition last of whatever hit goodness inward mutual coldness conditions.
So, I idea I'd endeavour a mutual coldness examination of my ain to run into what I mightiness detect out. I define mutual coldness here, inward the context of an upright canister stove, equally a fuel temperature (not necessarily air temperature) less than x Fahrenheit degrees (about 5 Celsius degrees) higher upwards the boiling betoken of the fuel.
Now, inward Soto's test, nosotros don't truly know how mutual coldness the H2O is, nosotros don't know what's inward those fuel canisters, etc. In other words, nosotros truly don't know much nigh the examination conditions. So, earlier I become on, allow me lay out my examination conditions. Hopefully this department isn't likewise boring. :)
Testing Conditions
I started both stoves, the Monatauk Gnat first, in addition to then the Soto Microregulator. Once both stoves were lit, I opened both valves to their maximum opened upwards seat in addition to allow them burn. Both stoves were on laissez passer on of a Ridgerest closed jail cellular telephone foam pad.
I allow the video run for a combined total of nigh xx minutes. The "short" video clip below is from the final 3 or so minutes of that unopen to xx infinitesimal period. The "long" video posted inward the appendix was started earlier the sack began in addition to extends for nigh 17 minutes.
Discussion
I started the examination at a temperature of 31F/-0.5C, nigh 12 degrees Fahrenheit above the boiling betoken of the fuel. The flame's sizes present that at that topographic point was reasonably expert delineate per unit of measurement area at the start of the test.
The Microregulator had a much larger initial flaming than the Gnat. Obviously, it would possess got been a amend examination to possess got ii nearly identical stoves, ane amongst a conventional needle valve in addition to the other amongst a regulator valve, but I had no means to larn ii such stoves. However, fifty-fifty without closely matched stoves, ane tin assess whether or non a stove's flaming has been significantly impacted yesteryear the temperature.
Errata: In the video you lot may listen me say something to the final result that the ambient temperature is equal to the boiling betoken of the fuel. While that would possess got been truthful at bounding main level, the video was shot at 6000'/1825m elevation, hence the ambient temperature was truly nigh twelve degrees higher upwards the boiling betoken of the fuel.
In the video, I said something nigh the canisters beingness peradventure higher upwards the ambient temperature because they had been inward my pack. On farther reflection, I realized that I had taken the canisters out good earlier the examination was started. The canisters were resting on a snowfall costless metallic surface that had been inward the opened upwards all day. The canisters were undoubtedly at ambient temperature at the start of the test.
Observation
At the terminate of the examination period, both stoves had similarly sized, really minor flames. The Soto Microregulator offered no discernible payoff inward mutual coldness conditions, equally I define mutual coldness (see higher upwards definition).
Concluding Remarks
No criticism of the Soto Microregulator stove is intended here. It is ane of the nicest built upright canister stoves that I have. It is craftsmanship at its finest. Again, my solely betoken hither is that I could non constitute that at that topographic point was whatever payoff to a regulator valved stove inward mutual coldness conditions equally I define cold, above.
I'm non for sure what Soto was trying to present inward their video. Soto is based inward Japan. There may last some linguistic communication barrier here. People hither inward the U.S. of A. of America possess got taken Soto's video to hateful that the Soto Microregulator has an payoff inward mutual coldness weather. I could discern no such payoff inward mutual coldness conditions (as I define cold) nor is at that topographic point anything inward the chemical scientific discipline or physics of either the stove or the fuel that would advise such an advantage.
I would last really opened upwards to hearing from Soto a reply to this spider web log post. In particular, I would beloved for them to depict inward special a ready of conditions nether which a regulator valve stove mightiness possess got an payoff over a needle valved stove, an payoff that I mightiness last able to corroborate through testing.
I give thank you lot you for joining me on some other Adventure inward Stoving,
HJ
Appendix
In Soto's test, they allow the stoves sack for nigh 5 minutes. In the "long" video, below, you lot mightiness desire to picket the commencement vi minutes. I start the stoves nigh a infinitesimal into the video, hence vi minutes into the video is nigh 5 minutes of sack time. I recall you'll run into that at 5 minutes into the burn, both stoves possess got significantly reduced flaming sizes equally compared to their respective flaming sizes at the start of the test.
There's simply ane work here: It doesn't brand feel from the standpoint of physics in addition to chemistry. I mean, the relative delineate per unit of measurement area inward a canister is a business office of the fuel inside, the delineate per unit of measurement area outside, in addition to the temperature. Compressed gases, such equally those inward the canister of a backpacking stove, follow for sure rules of physics in addition to chemistry. Changing the valve type won't crusade that delineate per unit of measurement area to change. I've talked to engineers, chemists, in addition to physicists. No ane seems to recall that a regulator valve volition last of whatever hit goodness inward mutual coldness conditions.
So, I idea I'd endeavour a mutual coldness examination of my ain to run into what I mightiness detect out. I define mutual coldness here, inward the context of an upright canister stove, equally a fuel temperature (not necessarily air temperature) less than x Fahrenheit degrees (about 5 Celsius degrees) higher upwards the boiling betoken of the fuel.
Now, inward Soto's test, nosotros don't truly know how mutual coldness the H2O is, nosotros don't know what's inward those fuel canisters, etc. In other words, nosotros truly don't know much nigh the examination conditions. So, earlier I become on, allow me lay out my examination conditions. Hopefully this department isn't likewise boring. :)
Testing Conditions
- Elevation: Approximately 6,000'/1825m.
- Temperature: 31F/-0.5C equally measured on a digital probe type cook's thermometer. No calibration was employed on the thermometer.
- Conditions: Light wind. No precipitation.
- Fuel used: 100% n-butane. No isobutane or propane was used.
- Air pressure: Unmeasured.
- Canister temperature at initiation of test: Unmeasured but assumed to last ambient. The canisters were left out for a considerable fourth dimension spell I did diverse things at the place I stopped at, including setting upwards the test.
- Boiling betoken of n-butane at bounding main level: 31F/-0.5C
- Boiling betoken of n-butane at 6,000'/1800m: About 19F/-7C
- Normally, the temperature of a compressed gas fuel needs to last nigh 10F (or 5C) degrees higher upwards the boiling betoken of that fuel inward companionship for a canister stove to possess got decent operating pressure.
- Releasing gas out of the canister causes the canister's internal temperature to drop. In other words, an upright canister stove's fuel gets colder equally the stove operates.
I started both stoves, the Monatauk Gnat first, in addition to then the Soto Microregulator. Once both stoves were lit, I opened both valves to their maximum opened upwards seat in addition to allow them burn. Both stoves were on laissez passer on of a Ridgerest closed jail cellular telephone foam pad.
I allow the video run for a combined total of nigh xx minutes. The "short" video clip below is from the final 3 or so minutes of that unopen to xx infinitesimal period. The "long" video posted inward the appendix was started earlier the sack began in addition to extends for nigh 17 minutes.
Discussion
I started the examination at a temperature of 31F/-0.5C, nigh 12 degrees Fahrenheit above the boiling betoken of the fuel. The flame's sizes present that at that topographic point was reasonably expert delineate per unit of measurement area at the start of the test.
The Microregulator had a much larger initial flaming than the Gnat. Obviously, it would possess got been a amend examination to possess got ii nearly identical stoves, ane amongst a conventional needle valve in addition to the other amongst a regulator valve, but I had no means to larn ii such stoves. However, fifty-fifty without closely matched stoves, ane tin assess whether or non a stove's flaming has been significantly impacted yesteryear the temperature.
Errata: In the video you lot may listen me say something to the final result that the ambient temperature is equal to the boiling betoken of the fuel. While that would possess got been truthful at bounding main level, the video was shot at 6000'/1825m elevation, hence the ambient temperature was truly nigh twelve degrees higher upwards the boiling betoken of the fuel.
In the video, I said something nigh the canisters beingness peradventure higher upwards the ambient temperature because they had been inward my pack. On farther reflection, I realized that I had taken the canisters out good earlier the examination was started. The canisters were resting on a snowfall costless metallic surface that had been inward the opened upwards all day. The canisters were undoubtedly at ambient temperature at the start of the test.
Observation
At the terminate of the examination period, both stoves had similarly sized, really minor flames. The Soto Microregulator offered no discernible payoff inward mutual coldness conditions, equally I define mutual coldness (see higher upwards definition).
Concluding Remarks
No criticism of the Soto Microregulator stove is intended here. It is ane of the nicest built upright canister stoves that I have. It is craftsmanship at its finest. Again, my solely betoken hither is that I could non constitute that at that topographic point was whatever payoff to a regulator valved stove inward mutual coldness conditions equally I define cold, above.
I'm non for sure what Soto was trying to present inward their video. Soto is based inward Japan. There may last some linguistic communication barrier here. People hither inward the U.S. of A. of America possess got taken Soto's video to hateful that the Soto Microregulator has an payoff inward mutual coldness weather. I could discern no such payoff inward mutual coldness conditions (as I define cold) nor is at that topographic point anything inward the chemical scientific discipline or physics of either the stove or the fuel that would advise such an advantage.
I would last really opened upwards to hearing from Soto a reply to this spider web log post. In particular, I would beloved for them to depict inward special a ready of conditions nether which a regulator valve stove mightiness possess got an payoff over a needle valved stove, an payoff that I mightiness last able to corroborate through testing.
I give thank you lot you for joining me on some other Adventure inward Stoving,
HJ
Appendix
In Soto's test, they allow the stoves sack for nigh 5 minutes. In the "long" video, below, you lot mightiness desire to picket the commencement vi minutes. I start the stoves nigh a infinitesimal into the video, hence vi minutes into the video is nigh 5 minutes of sack time. I recall you'll run into that at 5 minutes into the burn, both stoves possess got significantly reduced flaming sizes equally compared to their respective flaming sizes at the start of the test.
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