Name:
ChE342- Modeling and Simulation in Chemical Engineering-HW1-2nd Semester 2020/2021
Due Date: 07/04/2021
Answer the Following Question
For the mixing and heating process in in the figure below;
(1) Identify the system variables and parameters.
(2) Write the mass balance and energy balance equations.
(3) Calculate the degree of freedom.
Data:
I.D. No.
Assumptions:
Perfect mixing; thus, the exit temperature Tis
also the temperature of the tank contents. The
liquid holdup volume is constant. The
densities and the specific heat capacities of the
mixed liquids are assumed to be constant.
The densities and specific heat capacities of the mixed liquids 1 and
2 are the same and equal p & C, respectively. The height of the
liquid inside the tank is L. Heat is added to the mixed materials at a
rate of Q. The volumetric flow rates of the inlet liquids are F, 2F,
and F, with temperatures T, T? and 1.5T,, respectively. The
volumetric flow rate and temperature of the outlet liquid are F and thus, their temperature dependence is
T, respectively. The mixing and heating tank is a cylindrical vessel neglected. Heat losses are negligible. The net
having a diameter 0.75 L. It is given that the outlet flow rate is work done on the system by the surrounding is
related to the liquid level by the equation T=B\cdot Q (Bis a constant),
negligible.
and that they are two forced variables in the system.
$T_1 F_1$
$T_2 2F_1$
1.5$T_1 F_3$
L
000000
$T F$
Heater
