I've typically used the same cloth filter on a hario syphon for several (2 - 3 probably) months of continuous use (1 or 2 syphons daily). We clean the cloth after each use using a mild detergent, hot water and a soft scrubbing brush. Rinse very well after each wash. Typically, after a week or so we soak the cloth in oxyclean or similar for a couple of hours ...
Great find! How fun. You do indeed have a vacuum coffee maker -- a.k.a. vac-pot, syphon, or siphon.
This style of vac-pot is intended to be used on a stove-top (specifically: having a flat bottom, and with a handle on the neck of the bottom part -- the "bulb") -- looks a lot like this current model from Bodum - c/o Amazon. There's a good primer on the ...
I use this heat diffuser:
to heat my flat-bottomed glass Cona vac pot, on a halogen heat glass hob, which I think is similar enough to a ceramic hob to be relevant.
The diffuser also works to retain the heat, which helps with the process:
Turn on heating element to mid-heat (I ...
I'll add in my cleaning routine for my Yama siphon. I use the standard Yama cloth filters, and my cleaning routine is (a) rinse thoroughly after each brew, (b) every 10 brews or so soak it in vodka or everclear to remove more of the accumulated oils and junk, and (c) do an oxyclean soak after 50 brews or so.
Typically, around 100 brews the filter will ...
One option would be to pressurize the coffee in a keg with the gas that you choose. In this case you would have the cold brew already made (or purchased).
This option requires about the same amount of equipment that a beer brewing setup requires.
Nitrogen tap (has higher pressure rating than standard tap)
I assume that it is possible. However, what will be the benefit? This is my opinion, but... We must try to drink coffee, not generate fancy chemical experiments.
Now, the objective part:
Pressurizing seems quite easy in room temperature. Depressurizing is quite problematic in a siphon. So, it will be a mess when you try to collect your brewed coffee. Or, ...