Jeg fik dette svar vedr. et par spørgsmål om påfyldning af R507 og R404a på en NF11F kompressor fra Gray Mole:
"For regassing, there is no actual need to change the captube or it's length. If you want to get the best tuning, and the optimal result, then captube tuning can be done, but it's not something that's needed to get better temps and load from the unit.
The gas itself has a higher capacity, and the charge of the gas can be a strong determining factor in the ability for your mach to hold load. More gas = more load is a general rule to a point, within the confines of the captube length.
However, using the charge method of determining capacity is a double edged sword, and not without sacrifice. More gas in your unit means 2 things.
1. You can get to a point where you're heavily charged, enough that you simply cannot run your unit safely without some kind of load on the evaporator. The load from a cpu doing nothing isn't enough and you actually need to run a load program, like prime95, or Folding@home, just so that the refrigerant doesn't return to compressor as a liquid which can cause damage, both short term or long depending on how heavy that is.
2. You lose your colder temps. Balancing the charge vs. the ability to hold load is the trickiest part of doing the modifications. Tuning for 210w means that you won't be quite as cold at other, lower heatloads, but your temps don't change as much from idle to load. The perfect tuning is one that's done to YOUR specific cpu, while under load at maximum overclock. That's nearly impossible unless it's being tuned by the person who owns the PC, or you send your entire PC to the person who does it.
Tuning the captube to roughly what you're after, ie 210w = 9.6' of .031" for example, then tuning using a load tester which is exactly 210w, and charging so that you get the best temps at said 210w, will give you the best balance of load and temp at 210w.
The same could be said for any wattage you think your cpu will put out. That creates a lot of work for the person who's going to do that work, and you DO have a little give in either direction with tuning by charge amount. A stock unit may only be capable of 190w for example, and have a captube that's 200w nominal. After Fatty charges it with his load tester at 210w, it's capacity is higher both from the nature of the 507 gas, and the charge amount flooding the evaporator slightly more, which is slightly less efficient than the perfect amount (just enough to cool the load in question) but tends to have a lost less 'swing' in temps from idle to load, making your overclock easier to maintain as the temps don't rise as much. Also 'futureproofs' your unit a little more as you can go to a higher wattage cpu without worry.
Jeez...I talk too much...
Insulation that works well for me is 5/16" ID in either 9mm or 13mm thickness. 9mm will do, but 13mm is better. I find though that the side panel of the mach chassis is pushed a bit until the insulation get's flattened into shape.
Cheers
Gray"
Håber det er med til at belyse emnet.