Support the Arctic Sea Ice Forum and Blog

Author Topic: Heating with wood or pellets ? and air heat pump ?  (Read 34744 times)

Simon

  • New ice
  • Posts: 39
    • View Profile
  • Liked: 15
  • Likes Given: 121
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #100 on: September 20, 2019, 04:36:27 PM »
According to this Finnish study, log burning is not good for the climate. Pellet burning is far better. The best method of home heating is heat pumps powered by zero carbon electricity. Trouble is, heat pumps only work well in well insulated houses.

https://www.sciencedirect.com/science/article/pii/S0301421519304161


Pmt111500

  • Guest
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #101 on: September 20, 2019, 04:58:32 PM »
According to this Finnish study, log burning is not good for the climate. Pellet burning is far better. The best method of home heating is heat pumps powered by zero carbon electricity. Trouble is, heat pumps only work well in well insulated houses.

https://www.sciencedirect.com/science/article/pii/S0301421519304161



Thanks Simon, I've got a friend using the pellet system, he can probably summarize more of that. On this house it isn't an option. What could work is the ground heat pump, but the lowest floors should be ripped off for installation and the owners of those parts aren't going to approve. I guess some of them would rather let the house rot than to lose rent.

VaughnAn

  • New ice
  • Posts: 80
    • View Profile
  • Liked: 58
  • Likes Given: 399
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #102 on: September 20, 2019, 07:38:10 PM »
My grandfather and my greatgrandfather built my house in 1909.  Needless to say, I have done major improvements including residing and insulation.  I have one section that was built in 1950 that I moved from another house.

I heat with a wood stove and have no need for air conditioning.  The wood stove I have is a Waterford 103 and needs to replaced this year as it has seen better days.  I will be afraid to use it before too long(Parts appear to be no longer available either per various stove people).  I had the chimney replaced in 1978 when I got the Waterford.  The chimney is in excellent condition. 

I live near suburbia and semi-forested land.  I am able to get all the free wood I need.  All I have to do is get it so I do use fossil fuels in my chainsaw and a pickup so that part isn't free.  Sometimes people even pay me to haul it off but I don't ask to be paid because I use it to heat my house and for other projects.  Otherwise most of this wood would either end up in a landfill or left to rot. 

Incidentally electric rates have been falling in this area as well due to renewable energy sources.  The rate of the decrease has been increasing of late as well. 

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #103 on: September 20, 2019, 09:00:06 PM »
According to this Finnish study, log burning is not good for the climate. Pellet burning is far better. The best method of home heating is heat pumps powered by zero carbon electricity. Trouble is, heat pumps only work well in well insulated houses.

https://www.sciencedirect.com/science/article/pii/S0301421519304161



Thanks Simon, I've got a friend using the pellet system, he can probably summarize more of that. On this house it isn't an option. What could work is the ground heat pump, but the lowest floors should be ripped off for installation and the owners of those parts aren't going to approve. I guess some of them would rather let the house rot than to lose rent.
I believe that the study is not fair for woodburning. Most emissions come from sauna stove and open fire places. Looking at that study, my conclusion would be that investments in efficient systems is urgent. There was also a Goddard Institute study making the difference between black carbon (fossil fuels) and brown carbon (when burning biomas). Brown carbon was found to be less climate heating. I don't have the reference here but will try to find it.
Of course burning wood produces CO2 and, like I always say, using renewable energy doesn't allow you to waste it.
 

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #104 on: September 20, 2019, 09:11:20 PM »
What makes the difference with a wood or pellets stoves is heat on demand, or a very short time between starting the fire and enjoying heat. Infra red heaters also provide that possibility. So you can let the temperature go much lower when you leave your home.

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #105 on: October 03, 2019, 05:45:48 PM »
Here is the study comparing the impact of black and brown carbon as aerosols.
https://www.giss.nasa.gov/research/briefs/bauer_01/

Pmt111500

  • Guest
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #106 on: October 07, 2019, 03:04:48 PM »
Had to keep the bathroom battery on though at low temperature, but otherwise the four hour cycle I described seems to work. I'll of course have to lengthen the on-time once the freezing temperatures start kicking in. Very nice to wake up to a warm kitchen. On couple of days with north winds I had to run the heat pump a bit on the days too, since I just don't manage well in under 18.

But of course the real measure would be the next electric bill.

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #107 on: January 26, 2020, 06:59:48 PM »
I also tried wood briquettes in my new stove, and it also provides a much more regular heat compared to normal wood.

I guess this is due to the form and to the regularity of the material.

If somebody wonders what I bought, here is a link https://www.hark.de/produkte/kaminoefen/kaminofen-hark-44-53-gt-ecoplus-detailinformationen.html

I get much more heat per kg of wood, but high efficiency requires high burning temperature, so when temperatures are normal outside, we let it go out and start it again when we are cold. Otherwise we overheat the rooms.

Briquettes are technically great, but I want to use local wood.

nanning

  • Nilas ice
  • Posts: 2401
  • 0Kg CO₂, 37 KWh/wk,125L H₂O/wk, No offspring
    • View Profile
  • Liked: 304
  • Likes Given: 20397
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #108 on: January 27, 2020, 06:26:17 AM »
Air heat pump:
If you're living by yourself, an air heat pump (electric warm air blower) powered by solar/wind /battery can keep you warm at the place where you sit/work/cook. Put on som extra clothes (I wear woolen socks+pantoffels, insulated hiking trousers, shirt+sweater+light coat+bathrobe,warm collar+woolen hat (muts)) and your house can be as low as 5°C. Now your house resembles the centuries milennia-old situation that almost all humans in a cold climate had: Only 1 hot spot in the house. But you'll have: NO EMISSIONS and NO AIR POLLUTION and low modern technology so it's something you can repair.

At temperatures below 10°C it is nice to have some warm air over your hands (I sit in the cold draft from outside and hands can get very cold). I've done 2 winters with room temperatures <7°C and had to wear gloves which is not easy when typing or operating the mouse. Just keeping warm is a lot of hassle but it is doable. Not recommended though if not necessary.

Candles at temperatures <10°C:
Your candles only melt a small cylinder down trough the candle. The candles I have used don't work properly at low temperatures.

Some random thought: Try to make and knead dough with hard butter at 5°C. :)
"It is preoccupation with possessions, more than anything else, that prevents us from living freely and nobly" - Bertrand Russell
"It is preoccupation with what other people from your groups think of you, that prevents you from living freely and nobly" - Nanning
Why do you keep accumulating stuff?

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #109 on: January 27, 2020, 06:42:20 AM »
With low temperature in the house (like 5-10°C) you have to be careful if you have water pipes in the outside walls. They might freeze.

Pmt111500

  • Guest
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #110 on: February 07, 2020, 02:13:00 PM »
Just a short note, the coldest night this winter up until now was last night, even got to double digits -10,7°C. Never been a winter like this in my life time, and likely not after 536AD. either. The heat pump didn't have any trouble in keeping the place warm. Temperatures are expected to again rise above 0 in two days so the third snows will be gone as fast as the previous two. Nothing to write abroad about.

Another short note, the worst place to install the internal unit is the toilet. Luckily I wasn't so stupid, but I've learnt to close the door and keep the electric battery on in there.

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #111 on: March 17, 2020, 08:54:45 PM »
Hello,
I just want to inform you that my wife isn't too happy with our new wood stove. Too much infra red. She feels like on the grill.
Etienne

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #112 on: October 03, 2020, 08:30:33 PM »
We found a solution to the excess of infra red radiation of our wood stove.

There is a German company producing shield for stoves. You can see the model in the middle of this page https://www.metallwaren-schuerer.de/ofenzubehör.html

Even if the window of our stove goes like 20 cm above the shield, it works fine because enough infra red radiation is captured by the shield.

It gets quite hot, you have to be careful with kids, but I don't think that it could be hot enough to burn dangerously. 

It is very light, you can put it between the Stove and the wall when you don't need it. It is 100% Iron, it won't burn. You can even place it to protect just some people if others want to enjoy the infra red.

If somebody is interested, you have to look for "Schürer Metallwaren Ofenschirm", but the cheapest reseller I found has a web-site that is only in German.

etienne

  • Nilas ice
  • Posts: 1083
    • View Profile
    • About energy
  • Liked: 184
  • Likes Given: 3
Re: Heating with wood or pellets ? and air heat pump ?
« Reply #113 on: October 17, 2020, 09:52:32 AM »
Here a picture