Question: A CSTR temperature control system is graphically illustrated in the figure below. The chemical reaction should be stopped during any emergency. The heat required by

A CSTR temperature control system is graphically illustrated in the figure

A CSTR temperature control system is graphically illustrated in the figure below. The chemical reaction should be stopped during any emergency. The heat required by the reaction is supplied by steam. The steam flowrate is manipulated by a pneumatic control valve shown in the figure below, What type of valve (Air-to-Open or Air-to-Close) should be used and why? Figure 4: Schematic of a CSTR temperature control system

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