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Post by oboblomov on Apr 23, 2013 16:12:45 GMT -8
@#58 - endrunner
I've gone to your site and tried to place an order but can find no way of doing so. What do you suggest I do?
obob
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Post by endrunner on Apr 25, 2013 20:49:54 GMT -8
Sorry, one and all, the site now has a contact us page and the required buttons are now active. cheers
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Post by endrunner on Jul 7, 2013 11:22:16 GMT -8
Hi, We have posted a new you-tube video on building a 4" tiled rocket heater. Attachments:
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Post by Donkey on Jul 9, 2013 6:33:07 GMT -8
Ok.. I got a question. Why vermiculite only on interior installations (and pearlite on exterior)?
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Post by endrunner on Jul 11, 2013 8:41:32 GMT -8
The reason has to do with water. Here is a quote from my blog at dragon heaters blog.dragonheaters.com/burning-wood-insulation-material-choices/"It is easy to find both horticultural and masonry perlite. What is the difference between the two? Masonry perlite coated with silicone, which keeps water from getting trapped inside the perlite. Horticultural perlite is used precisely for the purpose of storing extra water; it does not have the silicone coating. Consequently, masonry perlite is recommended for applications that will be exposed to water, such as when mixing with clay slip or it is used outdoors. While it possible to treat vermiculite to resist water intake, it is not as commonly found as perlite treated the same way. Water trapped inside the perlite, when heated can cause steam and ruptures."
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Post by Dan (Upstate NY, USA) on Jul 12, 2013 1:04:18 GMT -8
Good to know
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Post by Donkey on Jul 12, 2013 8:03:58 GMT -8
Huh.. Well, I've heard this before but I use horticultural pearlite all the time.. It's difficult to find the masonry grade stuff around here, but the horticultural pearlite is EVERYWHERE. I've not experienced any problems with it yet.
Nice blog page by the way, very informative. Also, the video (above) is quite good.. Too bad about the music..
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Post by matthewwalker on Jul 12, 2013 9:28:33 GMT -8
Great build video Sandy, it is very cool to see such nice work.
I agree though Donkey, while in principal it would be nice to use masonry perlite, I use horticultural all the time with no apparent downside, it is cheap and available.
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Post by endrunner on Jul 14, 2013 18:48:04 GMT -8
Thanks for the feedback! I bow to your greater working experience on this and have edited my post accordingly. cheers sandy
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Post by blueyedmule on Sept 2, 2013 1:41:48 GMT -8
Here's a website with various stove prices.. The cheapest is around $1,000 (American $$). Funny that the site is called Smokey's Stoves. Funny to me, in that it's ingrained in us that fire ALWAYS equals smoke, but really the name (for me) SHOULD be a dis-incentive to buy. Here's the Temp-Cast website, makers of masonry stove kits, where they are saying "The cost of a complete Temp-Cast core kit, not including chimney and facing, will generally fall in the range of $4000 to $5000". I take it you're offering these links to contrast pricing for cores?? If I could legally get a RMH in my home for the price of a moderate wood stove I'd have it done in a heartbeat. Maybe when you get your steel RMH units ready for the market. ..
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Post by Donkey on Sept 2, 2013 9:49:40 GMT -8
Depending on your building department, these can be permitted as "masonry heaters". Ernie and Ericha (Wisner) have gotten them into the code in Portland Oregon. It is WELL worth a look, they did quite a lot of work and their final code is pretty likely to be directly portable to other jurisdictions. www.ernieanderica.info/rocketmassheaterpermitting
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Post by Robert on Sept 6, 2013 8:08:41 GMT -8
Its beautifull. Just wanderin about few thing and if i could ask the question.
1. What kind of mixture U used for making this cast? 2. what about the shape? rectangular vs. round? i heard that round one is better. 3. i cannot see where is the heat riser...
and the price is not much i think as well.
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Post by endrunner on Sept 7, 2013 6:07:34 GMT -8
Its beautifull. Just wanderin about few thing and if i could ask the question. 1. What kind of mixture U used for making this cast? 2. what about the shape? rectangular vs. round? i heard that round one is better. 3. i cannot see where is the heat riser... and the price is not much i think as well. 1) We use commercial refractory that is strong enough to take the abuse from wood yet lighter than normal refractory so that it burn tunnel has some insulating properties. 2) In a perfect world round would be better. But shipping concerns and production cost dictated a square heat riser. The heat riser comes with the unit, except for overseas shipments. 3) See attached picture and check out the full site and blogs at www.dragonheaters.com/ Attachments:
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Post by endrunner on Sept 7, 2013 6:21:18 GMT -8
Regarding Permitting
The Dragon Burners and Rocket Heaters in general are EPA exempt because they have no facility to adjust the air and thus are considered a constant burn heater.
The Dragon Heater Castle build qualifies as a masonry heater on every point, except its "firebox" is too small. But this should not be a problem for qualifying. Unlike a traditional rocket heater build, with a very hot barrel, the castle build offers a maximum surface temperatures that meet the ASTM Guide E-1602-94 masonry heater requirement of not more than 225F. Units can also then be installed close to walls, the code says 4" inches.
One of the other main code requirements is that the firebox be made from refractory, hence many home made rocket heaters made with bricks do not pass. This is of course not an issue when using a Dragon Burner.
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Post by plauale on May 31, 2014 1:03:49 GMT -8
Anybody know if someone makes a similar precast core in Europe?
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