invented by Eugene Frenette
Several of these units have been built. There are several ways to build a simple model,with the rotor and the static parts having the same configuration. They may be a cone , cylinder or normal cup shape as in a tin cans.
It is recommended that the experimenter start with two tin cans. The tin cans should fit one in to the other with about 1/8 inch clearance around the sides and 1/4 inch clearance between the bottoms of the two cans.. High temperature oil is put between the two tin containers ,don't overfill with the oil.
One small unit produced about 110 degrees Fahrenheit in 60 degree room. the outer diameter of the vessel was no more than four inches.
Another unit 30 inch in diameter and using a 1/2 to 3/4 horse power at slow revolution The temperature could easily have risen to between 200 and 300 degrees Fahrenheit. The device heated 16 rooms for about $30.00 a month. The liquid molecules are set into greater motion due to the rolling friction between the stationary and rotating cups.
A good conductor such as steel should be used to conduct the heat. If you can get the liquid at the right thermal vibration the heating action will be intensified. Keep the design simple and operate at very slow speed.
Further improvement would be to have both vessel rotating in opposite directions
