• The net change (increase or decrease) in the total energy of a system during a process is equal to the difference between the total energy entering and total energy leaving the system.
Energy change of a system
Energy change of a system
The energy change of a system during a process is equal to the net work and heat transfer between the system and its surroundings
Energy transfer mechanisms
• Energy can be transferred to or from a system by three mechanisms
– Heat
– Work
– Mass flow
Energy transfer mechanisms
