FIRST LAW OF THERMODYNAMICS
The important information from this chapter is summarized below.
First Law of Thermodynamics Summary
The First Law of Thermodynamics states that energy can neither be
created nor destroyed, only altered in form.
In analyzing an open system using the First Law of Thermodynamics, the
energy into the system is equal to the energy leaving the system.
If the fluid passes through various processes and then eventually returns
to the same state it began with, the system is said to have undergone a
cyclic process. The first law is used to analyze a cyclic process.
The energy entering any component is equal to the energy leaving that
component at steady state.
The amount of energy transferred across a heat exchanger is dependent
upon the temperature of the fluid entering the heat exchanger from both
sides and the flow rates of thse fluids.
A T-s diagram can be used to represent thermodynamic processes.