I am interested in replicating Loyds friction heater, but until I have everything I need for that, I decided to try out the heater with two cylinders and oil between them. I mean this one:
http://f1.grp.yahoofs.com/v1/8EbpSK6...Heater%20a.pdf
Thank you Rick for the link
It is really easy and I threw it together in few hours. The outer cylinder is about 25 cm tall and 98mm in diameter with 2mm thick walls. The inner cylinder is about 20cm tall and 86mm in diameter also with 2mm walls. The gap between the cylinders is about 6mm. The inner cylinder has glued on caps so that its ends are shut and it can not fill with oil. The main shaft is just a piece of lead screw 10mm in diameter.
I filled the system up with synthetic gear oil and attached it to a drill press. The highest RPM's that the drill can put out is 2020 RPM. When I turned the drill ON, I started to monitor the temperatures with an IR thermometer. Unfortunately the IR thermometer does not give accurate readings from the shiny cylinder surface. So I put it away. After about 5 minutes, the outer cylinder temperature became so hot, that I could not hold my hand on it (that would be about 60 degree Celsius), so I stopped the drill. I also can not go too high because of the polycarbonate end caps, that could melt at gigher temperatures.
Anyway, it seems to work, it certainly puts out heat. I don't know about the efficiencies yet, but it works. Now I need to get a normal thermometer and do some more testing. Here are some pics:
Any comments and suggestions are welcomed
Thanks,
Jetijs
http://f1.grp.yahoofs.com/v1/8EbpSK6...Heater%20a.pdf
Thank you Rick for the link
It is really easy and I threw it together in few hours. The outer cylinder is about 25 cm tall and 98mm in diameter with 2mm thick walls. The inner cylinder is about 20cm tall and 86mm in diameter also with 2mm walls. The gap between the cylinders is about 6mm. The inner cylinder has glued on caps so that its ends are shut and it can not fill with oil. The main shaft is just a piece of lead screw 10mm in diameter.
I filled the system up with synthetic gear oil and attached it to a drill press. The highest RPM's that the drill can put out is 2020 RPM. When I turned the drill ON, I started to monitor the temperatures with an IR thermometer. Unfortunately the IR thermometer does not give accurate readings from the shiny cylinder surface. So I put it away. After about 5 minutes, the outer cylinder temperature became so hot, that I could not hold my hand on it (that would be about 60 degree Celsius), so I stopped the drill. I also can not go too high because of the polycarbonate end caps, that could melt at gigher temperatures.
Anyway, it seems to work, it certainly puts out heat. I don't know about the efficiencies yet, but it works. Now I need to get a normal thermometer and do some more testing. Here are some pics:
Any comments and suggestions are welcomed
Thanks,
Jetijs
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