Energy Fundamentals: Principles, Systems, and Technologies
Classified in Geology
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1. Energy: Basic Concepts
- Energy: The ability to do work; it can be transferred and converted, but not created or destroyed.
- Units: Joule (SI) and kWh are commonly used in energy systems.
- Forms of Energy:
- Macroscopic: Kinetic, potential.
- Microscopic: Internal energy (chemical, nuclear, sensible, latent).
- Energy Conservation (1st Law of Thermodynamics):
- Energy balance of a system: ΔE = Q − L + ΣHi
2. Forms of Energy
- Kinetic energy: Motion-related.
- Potential energy: Gravitational, elastic.
- Internal energy:
- Sensible (temperature-related).
- Latent (phase change).
- Mechanical energy: Kinetic + potential + flow energy.
- Electrical & magnetic energy.
3. Energy Transfer Mechanisms
- Heat (Q): Transferred due to temperature differences (conduction, convection, radiation)