Controlled residential ventilation + fireplace + kitchen exhaust, does it work?

  • Erstellt am 2020-11-11 20:17:53

BBaumeister

2021-02-04 12:26:34
  • #1


If the house is very well insulated, think carefully about the panoramic fireplace. Lots of glass also always means the release of large amounts of heat all at once. This causes a room to overheat very quickly. A masonry heater might be better here.

Regarding the ventilation problem: A fireplace should always be independent of room air. There are chimney systems where fresh air is supplied virtually through the space between the chimney wall and the flue pipe. As long as the fireplace is Dibt-approved (if at all, these are only fireplaces with a flat glass in one direction), that can be sufficient. Otherwise, you can't avoid a negative pressure monitor. This measures the negative pressure in the living space and the negative pressure in the chimney. If the negative pressure in the chimney is lower than in the living space (exhaust gases can be drawn into the living space), the negative pressure monitor switches off the cooker hood and ventilation system. In fact, this has happened to us once so far, namely when the fireplace was still in the heating-up phase (the draft in the chimney was still low) and the cooker hood was at full power (just frying fish). However, at that time you could clearly smell in the room that smoke was coming in through the fireplace.
 

nordanney

2021-02-04 12:55:51
  • #2

But only for a limited period. However, it is manageable; no additional storage material should be installed. Then it works very well without turning into a sauna – you basically chase the heat right back out through the chimney. Ecological is something else :cool:

As far as I know, the chimney sweep will no longer accept anything else. Mine couldn’t care less about a Dibt certification, by the way. He always demands a pressure monitor. That’s why I treat myself to a technically simple model during the year, which is room-air independent but not certified. The money saved (which is not little) can then be used for other things. The fireplace room will have 11 kW for just over 20 sqm.
 

BBaumeister

2021-02-04 13:07:28
  • #3
11 kW is already quite a lot. Are there still ventilation slots for the convective heat? Perhaps a water jacket would be sensible. Then the heat could at least still be effectively used for hot water.
 

nordanney

2021-02-04 13:36:28
  • #4

But it is necessary to have a properly large glass surface (corner fireplace).

Of course. 400/600 cm² are planned.

As I said, I don’t do such complicated nonsense. Heat mostly goes back out through the chimney – I just want the look.
 

BBaumeister

2021-02-04 13:41:50
  • #5
I still have my doubts whether you will really be happy with it. In order for the large pane not to get sooty and have to be cleaned all the time, a corresponding amount of wood must also be burnt, and then it gets very hot very quickly. Just put an 11KW fan heater (construction heater) in the room and let it run for 1.5 hours. Have you alternatively thought about a gas fireplace or a panoramic fireplace with ethanol? The look is the same, but you don’t have the temperature problem. And not that much heat goes out through the chimney anyway, because a certain efficiency must be present in order for a fireplace to be approved at all.
 

nordanney

2021-02-04 13:48:19
  • #6
I have the corresponding experience with it. A few years ago, during the last house construction, we also had such a fireplace (in terms of power class - as a tunnel fireplace; higher power with a larger area). It never became a sauna, not even the windows were open. The heat actually just goes through the chimney. Wood is not the problem here in the countryside either. I am old-fashioned. A fireplace must be fueled with wood. It has to crackle and pop. Sparks have to sometimes fly, and when I open the door to the fireplace, it should smell like wood fire. Gas/ethanol flames can’t offer any of that. At that point, I might as well just hang a TV there and play a fireplace video on it ;)
 

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