ADRL nos accident

DFI429 wrote:

BigBlockRanger wrote:...Due to thermal losses, this requires the bottle to be be raised to a much higher temp than the nitrous itself needs to be at to raise the pressure...

Actually, the principle is not "thermal losses" - you're on the right track though - it has to do with temperature differential.

Speaking generally, to heat a medium to a desired temperature like 80 degrees from 40 degrees, if you apply an 80 degree heat source, the medium will start to go up in temperature quickly at first, and the ramp-up will diminish as the temperature differential gets smaller. Applying a 120 degree heat source until the 80 degree setpoint would maintain a greater differential throughout the heating cycle, thus reducing the heat time. This is the case with purpose-built bottle heaters. I'd consider the water bath setup the guys on the site have posted about to be the best, as it's the most uniform way to apply heat to a bottle.

In the case of these idiots who use torches, the heat is highly localized - which is the cause of the stress which weakens the bottle itself. Yeah, the differential is there, but again highly localized (think: World Trade Center structure failure ).

DFI429 wrote:

BigBlockRanger wrote:...Due to thermal losses, this requires the bottle to be be raised to a much higher temp than the nitrous itself needs to be at to raise the pressure...

Actually, the principle is not "thermal losses" - you're on the right track though - it has to do with temperature differential.

Speaking generally, to heat a medium to a desired temperature like 80 degrees from 40 degrees, if you apply an 80 degree heat source, the medium will start to go up in temperature quickly at first, and the ramp-up will diminish as the temperature differential gets smaller. Applying a 120 degree heat source until the 80 degree setpoint would maintain a greater differential throughout the heating cycle, thus reducing the heat time. This is the case with purpose-built bottle heaters. I'd consider the water bath setup the guys on the site have posted about to be the best, as it's the most uniform way to apply heat to a bottle.

In the case of these idiots who use torches, the heat is highly localized - which is the cause of the stress which weakens the bottle itself. Yeah, the differential is there, but again highly localized (think: World Trade Center structure failure ).

bruno wrote:here are the facts guys

http://dragracingonline.com/agent1320/2010/1320-xii_4-42.html

Greg_P wrote:You know, i use a torch on my bottles. An interesting thing to note is that after applying heat in a 3" circle for maybe 1 minute, I can remove the flame, and immediately touch the bottle and it is not even warm.

The bottle transfers heat very well to the liquid inside. What does this mean? In my opinion, it means that the bottle isn't being superheated, therefore there isn't any heat damage being done.

Greg