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The continuous stirred-tank reactor (CSTR), also known as vat- or backmix reactor, mixed flow reactor (MFR), or a continuous-flow stirred-tank reactor (CFSTR), is a common model for a chemical reactor in chemical engineering and environmental engineering. A CSTR often refers to a model used to estimate the key unit operation variables when ...
The plug flow reactor model (PFR, sometimes called continuous tubular reactor, CTR, or piston flow reactors) is a model used to describe chemical reactions in continuous, flowing systems of cylindrical geometry. The PFR model is used to predict the behavior of chemical reactors of such design, so that key reactor variables, such as the ...
Damköhler numbers. The Damköhler numbers (Da) are dimensionless numbers used in chemical engineering to relate the chemical reaction timescale (reaction rate) to the transport phenomena rate occurring in a system. It is named after German chemist Gerhard Damköhler, who worked in chemical engineering, thermodynamics, and fluid dynamics. [1]
A chemical reactor is an enclosed volume in which a chemical reaction takes place. [1][2][3][4] In chemical engineering, it is generally understood to be a process vessel used to carry out a chemical reaction, [5] which is one of the classic unit operations in chemical process analysis. The design of a chemical reactor deals with multiple ...
Generation III reactors, or Gen III reactors, are a class of nuclear reactors designed to succeed Generation II reactors, incorporating evolutionary improvements in design. These include improved fuel technology, higher thermal efficiency, significantly enhanced safety systems (including passive nuclear safety), and standardized designs ...
RELAP5-3D. RELAP5-3D is the latest in the RELAP5 code series developed at Idaho National Laboratory (INL) for the analysis of transients and accidents in water-cooled nuclear power plants and related systems as well as the analysis of advanced reactor designs. Developer (s) Idaho National Laboratory. Initial release. July 6, 1997. Stable release.
Image is rotating to more clearly show the saddle-like shape of the vapor–liquid equilibria. In statistical thermodynamics, the UNIFAC method (UNI QUAC F unctional-group A ctivity C oefficients) [1] is a semi-empirical system for the prediction of non-electrolyte activity in non- ideal mixtures. UNIFAC uses the functional groups present on ...
Levenspiel plot. A Levenspiel plot is a plot used in chemical reaction engineering to determine the required volume of a chemical reactor given experimental data on the chemical reaction taking place in it. It is named after the late chemical engineering professor Octave Levenspiel.