FIRST LAW OF THERMODYNAMICS
Thermodynamics
Summary
The important information from this chapter is summarized below.
First Law of Thermodynamics Summary
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The First Law of Thermodynamics states that energy can neither be
created nor destroyed, only altered in form.
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In analyzing an open system using the First Law of Thermodynamics, the
energy into the system is equal to the energy leaving the system.
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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.
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The energy entering any component is equal to the energy leaving that
component at steady state.
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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.
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