An initial Problem Heat Cascade resulting from the Problem Table Algorithm is presented in the table below. It is known that ATmin= 20C for this process. T* (C) 540 480 400 270 120 80 H (MW) 0 -1.25 -2.00 0.50 1.50 1.00 a) Determine the location of the Pinch (cold and hot Pinch temperatures) and the energy targets. "pinch = 400C [6 marks] b) Sketch/draw the Grand Composite Curve for the process and identify any pockets of heat recovery. [4 marks] c) Consider using steam generation as one of the utilities. What is the maximum amount of HP steam at 390C, 40 bara that can be generated using waste process heat from boiler feed water supplied at 45C? Assume that the enthalpy of vaporisation AH vap = 1715 k kg' Cteam = 1.87 and that of water Cwater = 4.3: are independent of the kJ kg.C kJ kg-C temperature in the range of interest. Sketch the resulting water-steam profile alongside the GCC. 1.05 kls specific heat capacity of steam [12 marks] d) The HP steam generated using waste process heat is used for power generation in a Rankine cycle system. How much power can be generated if the turbine isentropic efficiency is nis = 80%, the condenser pressure is 0.1 bara and the enthalpy of the ter the condenser outlet is 192 kJ/kg. [8 marks] 0.889 MW Use the Steam Tables or the Mollier diagram for steam provided to determine any additional thermodynamic data.