Closed system: Difference between revisions
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
{{MitoPedia | {{MitoPedia | ||
|description=A '''closed system''' is a system with boundaries that allow external exchange of energy (heat and work), but do not allow exchange of matter. A limiting case is light and electrons which cross the system boundary when work is exchanged in the form of light or electric energy. If the surroundings are maintained at constant temperature, and heat exchange is rapid to prevent the generation of thermal gradients, then the closed system is isothermal. A frequently considered case are closed isothermal systems at constant pressure (and constant volume with aqueous solutions). Changes of closed systems can be partitioned according to internal and external sources. Closed systems may be [[Homogenous system |homogenous]] (well mixed and isothermal), [[Continuous system |continuous]] with gradients, or [[Compartmental system |discontinuous]] with compartments (heterogenous). | |description=A '''closed system''' is a system with boundaries that allow external exchange of energy (heat and work), but do not allow exchange of matter. A limiting case is light and electrons which cross the system boundary when work is exchanged in the form of light or electric energy. If the surroundings are maintained at constant temperature, and heat exchange is rapid to prevent the generation of thermal gradients, then the closed system is isothermal. A frequently considered case are closed isothermal systems at constant pressure (and constant volume with aqueous solutions). Changes of closed systems can be partitioned according to internal and external sources. Closed systems may be [[Homogenous system |homogenous]] (well mixed and isothermal), [[Continuous system |continuous]] with gradients, or [[Compartmental system |discontinuous]] with compartments (heterogenous). | ||
|info=[[Gnaiger_1993_Pure Appl Chem]] | |info=[[Gnaiger_1993_Pure Appl Chem]], [[System]] | ||
}} | }} | ||
{{MitoPedia concepts | {{MitoPedia concepts | ||
|mitopedia concept=Ergodynamics | |mitopedia concept=Ergodynamics |
Revision as of 12:15, 1 January 2019
Description
A closed system is a system with boundaries that allow external exchange of energy (heat and work), but do not allow exchange of matter. A limiting case is light and electrons which cross the system boundary when work is exchanged in the form of light or electric energy. If the surroundings are maintained at constant temperature, and heat exchange is rapid to prevent the generation of thermal gradients, then the closed system is isothermal. A frequently considered case are closed isothermal systems at constant pressure (and constant volume with aqueous solutions). Changes of closed systems can be partitioned according to internal and external sources. Closed systems may be homogenous (well mixed and isothermal), continuous with gradients, or discontinuous with compartments (heterogenous).
Reference: Gnaiger_1993_Pure Appl Chem, System
MitoPedia concepts:
Ergodynamics
MitoPedia methods:
Respirometry
Labels:
HRR: Theory