QUESTION $4$

As a control engineer it is essential to have an excellent mathematical understanding of how the manipulated variables could influence the process variable in order for the control system to be fairly effective. Figure $1$ below shows a fluid tank which is used to heat incoming stream Fin. The system is intended to control the temperature of the process fluid in a tank by either opening or closing the valve of a hot steam line.

Figure $1.$ Fluid tank

$4\mathrm{.}1$ Construct a feedforward control loop configuration for the process above.

$(6)$

$4\mathrm{.}2$ Construct a feedback control loop configuration.

$(6)$

$[12$ Marks$]$