My question is really not about the heat itself. Let me clarify. Suppose we are using heat pump hot water heater which sources air from inside the home, you are going to extract 2000 BTU's of energy from the air using the equivalent of 1000 BTU's of electric. You have put 2000 BTU's into the water tank and have expended the equivalent of 1000 BTU's of energy to do it.McGiever wrote:The term "Heat Pump" may add to the confusion, maybe?
My question is about the 1000 BTU's, if this is regular air compressor we have stored the mechanical energy and can use it to drive an air tool. In a closed system like a heat pump that doesn't occur. Also note I realize some of the electric is going to be transformed to heat from the motor, friction and unless it was all being transformed to heat we can ignore those points for this discussion.
If it can't drive an air tool where has the equivalent of 1000 BTU's gone.
Let's take this step further, an air compressor could be considered closed system too. The high side is the tank and low side is the atmosphere.
In both cases where has the equivalent of 1000 BTU's gone?