Aaron’s Power Corner
Fact or Fiction???
A large diameter single rotor tube prony brake creates more heat during dynamic operation than smaller multiple sectioned prony brakes.
All prony brakes being used as a dynamometer absorb the same amount of heat when being operated at the same power level.
A single chambered rotor tube prony brake absorbs both heat and load equally, along with a single and controllable coefficient of friction.
One major issue with multiple section prony brakes is the imbalance in the coefficient of friction, none of the sections will absorb power equally or convert heat evenly during dynamic operation as experience has demonstrated.
As with all dynamometers the absorption rate is 42.6 BTU’s per horsepower, no matter what the prime mover is or what is being tested.