Stove Efficiencies

Tedinski Posted By Tedinski, Nov 5, 2013 at 2:06 PM

Thread Status:
Not open for further replies.
  1. Tedinski

    Tedinski
    Member 2.
    NULL
    

    Oct 16, 2013
    207
    16
    Loc:
    Northwest Pennsylvania
    My stove is supposedly 85% efficient. Not bad, right?
    I got to thinking... what are the efficiencies at low and medium burn rates? I have a CAB-50 and I just have low-medium-high control.

    The convection fan seems to take forever to come on. Fuel can be burning in the pot for as long as 10 minutes before the fan is engaged. That's a lot of wasted heat!

    Has anyone heard specifications on high vs. low burn, and efficiency?
     
  2. maineah1214

    maineah1214
    Member 2.
    NULL
    

    Aug 6, 2013
    44
    10
    Loc:
    Maine
    I think it's to avoid blowing cold air around in a cold room. Think of it as working itself out since it runs for 10 mins after the fire goes out, blowing off the remaining heat :) sorry i can't answer your question.
     
  3. bbfarm

    bbfarm
    Minister of Fire 2.
    NULL
    

    Jan 2, 2012
    708
    91
    Loc:
    wisconsin
    Also you wouldn't want any start up smoke to blow into your room. It gives that a chance to be sucked out the vent.
     
  4. briansol

    briansol
    Minister of Fire 2.
    NULL
    

    Jan 18, 2009
    1,913
    293
    Loc:
    central ct
    The fire warms up a heat sink. Nothing more.

    When that heat sink is hot, the room blower passes air over it to warm it.

    If it's not HOT, the air doesn't get warm.
     
  5. boosted3g

    boosted3g
    Feeling the Heat 2.
    NULL
    

    Aug 3, 2012
    269
    73
    Loc:
    Central PA
    It would be my guess that the stoves peak efficiency is reached when it is at least half it's rated output. I know my Harman is not efficient when it's run very low and the evidence is in the color of the ash. When I have it near half way on a really bitter cold night the ash turns a really light gray almost white with no buildup in the front of the pot compared to dark and piling up when it's just above an idle.
     
  6. john193

    john193
    Minister of Fire 2.
    NULL
    

    Jan 11, 2010
    1,053
    184
    Loc:
    Southeast PA
    This is why it is important to size the stove for the house. A powerful stove always running on low to medium isn't utilizing its full efficiency.
     
    briansol likes this.
  7. Woody1911a1

    Woody1911a1
    Feeling the Heat 2.
    NULL
    

    Sep 23, 2012
    445
    140
    Loc:
    Marblehead , Ma
    you're WAY over thinking this thing . put pellets in . enjoy being warm and saving money at the same time :) my opinion .
     
    Jack Morrissey likes this.
  8. briansol

    briansol
    Minister of Fire 2.
    NULL
    

    Jan 18, 2009
    1,913
    293
    Loc:
    central ct
    No, they are right. on low and high, the stove is not super efficient. it's most efficient on medium. Size it for that metric.
     
Thread Status:
Not open for further replies.

Share This Page