Equilibrium curve and operating line for Example

Hence we can locate the other endpoint of the operating line, point D (118°F, 65.1 Btu/lb-air). 

The area bound between the saturation line and the operating line is proportional to the potential for heat transfer. We now have two choices on how to obtain the final solution (Ntu ) a graphical or numerical solution. Each is outlined below  

By numerical integration we can use Simpson s rule to evaluate the data in columns 1 and 5 of Table 5.5. 

From the two solutions, we require a tower capable of performing approximately 1.7 transfer units. 

Additional problems are given at the end of the chapter. The reader should attempt them before studying the solutions given in Appendix C. 

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Figure 5.14 Equilibrium curve and operating line for Example 3.

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