Constraint example

Global Test The measurements do not close the constraints of the process. In the linear, material balance constraint example used above,... 

As mentioned in Chapter 1, the occurrence of linear inequality constraints in industrial processes is quite common. Inequality constraints do not affect the count of the degrees of freedom unless they become active constraints. Examples of such constraints follow ... 

Compared to the problem in the absence of the selectivity constraints (Example 7.1), the final product concentration has reduced a bit due to the imposed selectivity constraints. 

Personnel assignment where work rules and regulations impose difficult constraints Examples include (1) production of rosters for nurses in hospitals, (2) crew assignments to flights, (3) staff assignments in railways. 

Propositional constraints. Propositional constraints are used to combine constraints into phrases, thus making it possible to define conditional constraints. Examples are negating a constraint or defining an either constraint 1 or constraint 2 constraint (Table VIII). 

In contrast to sulfur oxidation to SO2, the oxidation to SO3 is limited by thermodynamic constraints (Example 4.2.3), and is the crucial reaction step in H2SO4 production. According to Eqs. (4.2.19) and (4.2.20), the equilibrium constant Ky based on the molar fractions of SO2, O2, and SO3 (with p as total pressure) is given by ... 

The constraints of current company practice should be highlighted and discussed. Is the company constrained by its previous products. If so, it is as well to know about it at the initial design stage. Possible manufacturing facihty constraints (example use is to be a certain plastic and/or process), financial and investment constraints, and attitudes are very... 

In screening the options, the assessment team should address questions that relate to the waste minimization goals and constraints. Examples of questions that should be addressed include the following ... 

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