Figure 6 Composite curves
Figures 6 and 7 show the composite curves and the grand composite curves
for the heat exchanger network presented in Figure 5. The
temperature-enthalpy diagram is a graphical tool that depicts the heat
transfer between any two hot and cold streams. It is an alternative
technique that gives useful insights into the temperature-driving force
for heat transfer between the streams. It is a plot of temperature on
the y-axis versus enthalpy or heat transferred on the x-axis for the
same heat-exchanger units in the network.