Accumulation of Energy
W
Q
Closed
System
System
ΔEsys
The diagram below shows a
uniform-flow process
in which mass flows into and out of a system.
uniform-flow process
in which mass flows into and out of a system.
Heat and work interactions also occur.
Consider the process for an interval of time from t1 to t2, where t2 > t1.
At t1 the energy in the system is: Esys(t1).
At t2 theenergy in the system is: Esys(t2).
What is the change in energy of the system during the process from t1 to t2?
Enthalpy Form of the 1st Law for Open Systems
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