Yes, friction loss does contribute to entory.
http://dictionary.reference.com/search?q=entropy&r=67
1. Symbol S For a closed thermodynamic system, a quantitative measure
of the amount of thermal energy not available to do work.
2. A measure of the disorder or randomness in a closed system.
3. A measure of the loss of information in a transmitted message.
4. The tendency for all matter and energy in the universe to evolve
toward a state of inert uniformity.
5. Inevitable and steady deterioration of a system or society
According to definition #1, entropy is the measure of thermal energy
not available to do work.
Using an example of an automobile, chemical energy (gas) is
transferred into mechanical energy (motion).
Loss of energy due to tire friction, crankcase friction, and others
contributes to the entropy. I have read estimates that nearly 60% of
gasoline's potential energy is lost to heat. A lot of R&D is going
into reducing that loss for better economy. |
