wood stove vs. rocket mass heater

http://www.permies.com

How to burn wood efficiently and cleanly. This is truly sustainable heat. I cannot think of any form of heat that is more sustainable. After all, this is just burning the twigs and branches that naturally fall of the trees in your yard. This may be the biggest thing that can possibly be done to save energy or save electricity.

Ernie Wisner, a wood stove designer in portland, oregon, compares a rocket mass heater to a conventional wood stove.

He used to heat his home with four cords of wood with a wood stove and now burns a half cord of wood each year. He now burns tree trimmings.

In this video he give us a tour on how the rocket mass heater holds heat throughout the night and into the next day while the wood stove required constant feeding. My other videos dive into the tutorial aspect.

music by Jimmy Pardo

Category:

Science & Technology

Tags:

• wood
• stove
• rocket
• mass
• heater
• home
• heating
• heat
• permaculture
• organic
• green
• eco
• environment
• air
• quality
• burning
• stoves
• winter
• fuel
• homesteading
• frugal
• wood stove
• fire

[dispatcher7007]

I can't find a real forum at permies.com so I place my 3 questions here:

1. What about the condensed water in the mass heater piping?

2. How do you get the ashes out?

3. Doesnt the barrel or the heat riser oxidize on the interior, due to the high heat?

[paulwheaton12]

@dispatcher7007 please tell me more about how you cannot find the forum at permies.com.

[88Kamikaze69]

@paulwheaton12

So... someone finds this subject you've put out on youtube to make people aware of the idea, they find it interesting and want to know more, they take the time to ask you a few questions, perhaps not quite interested enough yet to hit the forums and digg up these specific questions..

You take the time to sit down and write a reply to them and this is what you managed to put into type?

none of by business and all but jeez dude..

[paulwheaton12]

@88Kamikaze69 You mean the place where we have a dedicated forum about this and dozens of people actively talking about this and none of them have looked at this video in the last year? A place where you can ask a question and get a discussion. A place where the discussion has probably happened.

YT allows only tiny answers with no links or embedded images.

The forum was created to answer questions on a mass scale.

[TheCatfishClayton]

Does it get hot enough to cook on top of?

[paulwheaton12]

@TheCatfishClayton yes

[LGrey8]

@elcheat Net energy release varies greatly depending on type of wood and combustion method.

Your arguement is that if he did not insulate, it does not matter how efficient the stove is.

Well insulation is not the only variable. He installed a large amount of thermal mass. That bench is made up of cob, which is very dense. That bench can store massive amounts of heat that would otherwise be lost either up the chimney or out the windows or through the walls, and re-radiates it for hours.

[paulwheaton12]

@TheCatfishClayton It depends on how you build it. We talk about this a fair bit at permies. One of the videos covers it a little.

[carlube79]

Not one of you mentioned direct gasification? a smokeless open fire has a near complete combustion, all you need to do is catch the heat.

[asteroceras]

"Green" (unseasoned) wood releases a variety of toxic chemicals when burned, so this is not necessarily the best form of heating - even without considering solar and heat pump possibilities. If the twigs and trimmings were left somewhere to dry for months or years before being burned, then it would be quite clean and efficient.

[dispatcher7007]

okay... sorry.... found it as "permaculture forums"... didn't go there, because permaculture wasn't what i'm looking for... maybe you could just name it "forum" at your rocketstove-site...

going there now :) sorry again...

[TheCatfishClayton]

@spiderstone Yes, Rocket Mass Heaters by Ianto Evans, you can find it on Amazon for around $18.

[spiderstone]

@TheCatfishClayton can i buy a book or dvd on rocket stoves?