Post by rst on Oct 8, 2015 10:16:40 GMT -8
Hello,
I looked through the long "fireplace design" topic and was interested in doing something different.
There's an existing rumford fireplace where the 8" batchbox heater is desired to be placed. I'm looking for options on how to actually utilize the chimney as the exhaust or flue exit point for the heater (after sending it through the barrel/bench setup).
The biggest problem I foresee is the connection between the fireplace and the chimney, as the pathway is a semi-rectangular hole about 5 inch x 15 inch. I want to avoid any "permanent" modifications (such as breaking a larger hole to shove the 8" pipe into the chimney). The fireplace is on an exterior wall so I would not want to try to use it as a bell.
I assume just trying to seal off the fireplace and exhaust the heat directly into it would not work.
I've seen these "Straight Boot" fittings that come in sizes close to the size of the 5x15" gap and connect to an 8" pipe. Using two of these together I would be able to go from 8" round back to 8" and get through the bottleneck. However, I might guess that insulation would be needed around these single wall fittings, so I don't know how much of the space would be usable. I also don't know whether having this change in pipe shape would be problematic for stove operation and whether the total size is sufficient.
The chimney is brick surrounding concrete blocks filled with concrete. The interior of the chimney has a rounded-rectangular clay lining with a messy mortar job (ridges at every joint). Would I want to use pipe inside the chimney, and I assume I would want to insulate the pipe or use multi-layer pipe?
Is there hope for doing all this effectively?
Thanks
I looked through the long "fireplace design" topic and was interested in doing something different.
There's an existing rumford fireplace where the 8" batchbox heater is desired to be placed. I'm looking for options on how to actually utilize the chimney as the exhaust or flue exit point for the heater (after sending it through the barrel/bench setup).
The biggest problem I foresee is the connection between the fireplace and the chimney, as the pathway is a semi-rectangular hole about 5 inch x 15 inch. I want to avoid any "permanent" modifications (such as breaking a larger hole to shove the 8" pipe into the chimney). The fireplace is on an exterior wall so I would not want to try to use it as a bell.
I assume just trying to seal off the fireplace and exhaust the heat directly into it would not work.
I've seen these "Straight Boot" fittings that come in sizes close to the size of the 5x15" gap and connect to an 8" pipe. Using two of these together I would be able to go from 8" round back to 8" and get through the bottleneck. However, I might guess that insulation would be needed around these single wall fittings, so I don't know how much of the space would be usable. I also don't know whether having this change in pipe shape would be problematic for stove operation and whether the total size is sufficient.
The chimney is brick surrounding concrete blocks filled with concrete. The interior of the chimney has a rounded-rectangular clay lining with a messy mortar job (ridges at every joint). Would I want to use pipe inside the chimney, and I assume I would want to insulate the pipe or use multi-layer pipe?
Is there hope for doing all this effectively?
Thanks