Erica Wisner wrote:Hi Olaf,
What happens next!
With Olof and Anna in front of their latest Permies project to help local people with an efficient drying method!
Peter van den Berg wrote:You don't mention the exhaust pipe temperature, this could be interesting. And I spotted a possible flaw: the inlet and exhaust of the barrel bell are on the same level. With such a tight bell I would regard it best to elevate the hot inlet just above the level of the exhaust opening. Having both pipes at the same level bares the risk of short cutting by the hot gases.
Olof Jönnerstig wrote:it was still kicking out a fair bit of heat about 100 ºC so there is definitely room for improvement maybe would be good to channel the pipe through a Mass bench around the floor.
Olof Jönnerstig wrote:The exposed parts of the inlet pipe that connects the heat raiser to the barrels was about 400 ºC the rest was insulated with rock wool
Regarding the inlet pipe. It enters at the bottom of the barrel next to the exhaust but has a elbow on the inside that takes the pipe up to about the top of the first barrel.
I was hoping that that would be enough to have the hot air rise and not go straight out of the exhaust. Perhaps that should be higher.
Olof Jönnerstig wrote:I know I was warned to not let the exhaust leak out in to the shed for health and safety reasons... thats how it ended up
there are slits in the roof so the exhaust would leak out from the shed from that but it would still fill the shed up with some of the exhaust.
not ideal but at the time we didnt get a chance to cut a hole for the exaust. this will be contributing some to the ambient heat of the room I think ..
Peter van den Berg wrote: it is worth a congratulation!