Need something to get the vapor out

[felixsth]

Hi, it's my first brewing winter, I boil inside in a keg with a water heater element, normally I just boil with the door open to let the vapor go out, but now in quebec it's almost -10 C and it can get to -30C easily. Letting the door open for the whole boil/cooling is out of question ( I tried last week and the kitchen was 4 C). I thought about building some sort of cover with a dryer tube that goes out of the window. I didn't see anything like that on the website so i'm asking. Is it a good idea? Will it affect my boil off rate and will DMS escape enough? Thanks

 

[Bensiff]

What you want to avoid is the vapor going back into the kettle, if it hits the lid and drips back down over and over you'd be causing a sort of reflux distillation with the nasties that you want to vent out. So, you'd want to make a lid that is conducive to limiting vapors condensing and dripping back into solution. What about boiling near your stove hood so you can simply turn the fan on?

 

[felixsth]

My kitchen fan doesn't work and anyway it would not be enough since i'm brewing 10 gallons and the fan is really small and just push the air back in trough a filter.

 

[felixsth]

if I put a small fan at the end of the tube maybe it can pull enough air so the vapor don't fall back in the beer