Next: State functions
Up: Thermodynamics
Previous: Thermodynamics
Contents
What are three types of thermodynamic systems?
- Isolated: No exchange of heat, matter or work with the environment.
- Closed: Exchange of heat and work, but no exchange of matter.
- Open: Exchange of heat, work and matter.
Table 37.1:
Thermodynamic systems
| |
Exchanges with the environment: |
Does not exchange with the environment: |
Example |
| |
|
|
|
| Isolated |
|
Heat |
|
| |
|
Matter |
A very, very good thermos |
| |
|
Work |
|
| |
|
|
|
| Closed |
Heat |
Matter |
Greenhouse |
| |
Work |
|
|
| |
|
|
|
| Open |
Heat |
|
|
| |
Matter |
|
Ocean |
| |
Work |
|
|
|
What are four thermodynamic processes?
The four processes are systems going through changes in which a certain property is fixed or controlled:
- Isobaric - pressure is constant
- Isothermal - temperature is constant
- Isochoric - volume is constant
- Adiabatic - heat does not enter or leave (i.e. similar to isothermal)
What are six state functions seen in thermodynamics?
- Temperature
- Pressure
- Volume
- Entropy
- Enthalpy
- Gibbs free energy
Next: State functions
Up: Thermodynamics
Previous: Thermodynamics
Contents
Alfa Diallo
2006-08-04