Q1. A salt solution at 25C is added to a wellmixed tank at a flow rate of 80kg/hour. At the bottom of the tank, there is a heating spiral with a heat transfer area of 2m2 and in which water vapor condenses at 170C. The heated solution leaves the tank at a flow rate of 50kg/h and at the temperature of the liquid inside. Initially, there is 250kg of water at 15C in the tank. The overall heat transfer coefficient is 180Kcal/hr.m2C and heat capacity is 1Kcal/kgC; a) Define the currents by drawing a suitable figure b) Write the equations describing the system dynamics by making the necessary assumptions. c) Find the time it takes for the solution temperature in the tank to increase 5 times. d) What would you say about the result you will find with a heating spiral with a surface area of 2 times greater at the bottom of the Tank