30 lines
1.0 KiB
Markdown
30 lines
1.0 KiB
Markdown
---
|
|
title: Thermodynamics
|
|
created_date: 2024-12-05
|
|
updated_date: 2024-12-05
|
|
aliases:
|
|
tags:
|
|
---
|
|
# Thermodynamics
|
|
## Course Recap
|
|
- Different primary energy forms (chemical, nuclear, solar, kinetic) need to be converted into useful energy (mechanical, electrical).
|
|
- Applications are engines, aircraft/rocket propulsions, wind turbines, fuel cells, steam and gas turbines, combustion, compressors, pumps
|
|
- Thermodynamics provides us with tools for design, performance assessment, improvements and optimization.
|
|
- Thermal efficiency:
|
|
- $$ \eta_{thermal} = \frac{Useful work/energy}{energy provided}$$
|
|
- Combustion: gasoline ~35%, diesel ~42%
|
|
- fossil power production: ~35-48%
|
|
- solar thermal power production: ~18-22%
|
|
|
|
### Laws of Thermodynamics
|
|
|
|
|
|
> [!important] 0th law: Equilibrium
|
|
> If two systems are both in thermal equilibrium with a third system, then they are in equilibrium with each other.
|
|
|
|
This law establishes the concept of temperature, which is a fundamental and measurable prop
|
|
|
|
> [!important] 1st law: Energy Conversation
|
|
>
|
|
|