Transient state (chemical engineering)
Encyclopedia
In chemical engineering
, a system is said to be in transient state when a process variable has been changed and the system has not yet reached steady-state
. (Transient effect). Example: When a chemical reactor is being brought into operation, the concentrations, temperatures, species compositions, and reaction rates are changing with time until operation reaches it nominal process variables.
Chemical engineering
Chemical engineering is the branch of engineering that deals with physical science , and life sciences with mathematics and economics, to the process of converting raw materials or chemicals into more useful or valuable forms...
, a system is said to be in transient state when a process variable has been changed and the system has not yet reached steady-state
Steady state
A system in a steady state has numerous properties that are unchanging in time. This implies that for any property p of the system, the partial derivative with respect to time is zero:...
. (Transient effect). Example: When a chemical reactor is being brought into operation, the concentrations, temperatures, species compositions, and reaction rates are changing with time until operation reaches it nominal process variables.