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Rocket stoves and maple syrup production

 
Vickie Shaw
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Any one out there building a rocket mass heater to fit a maple sap evaporator?
 
Glenn Herbert
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Location: Upstate NY, zone 5
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A rocket mass heater would not work for making maple syrup, but a rocket stove can be adapted: Rocket Stove Maple Syrup Evaporator

There have been other posts on the subject as well, but I think this is the biggest success story.
 
Ron Helwig
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Location: New Hampshire
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forest garden hugelkultur tiny house
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I know of someone who made a custom evaporator for their woodstove. I don't see why one couldn't be made to fit on top of a rocket mass heater barrel. It probably wouldn't be quite as efficient as a rocket stove, but then you're also using the heat for multiple purposes. And if you're not talking about massive amounts and don't care if it takes longer then I'd say go ahead and try it.
 
Glenn Herbert
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The scale of production is the critical factor here. If you want to make some maple syrup for your family, a pan on top of the RMH barrel might work. Whether you will want to run your RMH for the time needed to evaporate is another question. (A rule of thumb is 1 gallon per hour per square foot of pan surface.) Humidity from 5 or 10 gallons of water being evaporated inside your house in a day might be an issue.

If you want to do any scale of commercial production, you need an outdoor evaporator, not an RMH.
 
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