Flooded condensers and flooded reboilers are sometimes used on distillation columns. In the sketch below, a liquid level is held in the condenser, covering some of the tubes. Thus a variable amount of heat transfer area is available to condense the vapor. Column pressure can be controlled by changing the distillate (or reflux) drawoff rate. Write the equations describing the dynamics of the condenser. MATHEMATICAL MODELS OF CHEMICAL ENGINEERING SYSTEMS PC R Column Cooling water on shell Liquid level inside tubes