I have an idea to build a
rocket mass heater which after running 6" duct through the
cob mass, decrease the duct to a 4" which would run inside of cinder blocks that form the wall of my aquaponics
pond, before venting out the chimney. I have a ton of questions on my design. Is it possible for this to work with the airflow? Would installing a duct fan in the 4" section be benifitial? What sort of temperatures could I expect to get in the 500 gallon
pond? Is it necessary to use firebricks to build the j tube, or could red bricks work? I would desperately love some feedback! Thanks!
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