14. A piping system contains a device that results in the fluid's changing its density and temper-

ature. For the system shown in Fig. RQ1-14, the pressure drop through the device is 12.5 psi.

Other characteristics are as follows:

| Line | Head loss (friction) | Density |

|---|---|---|

| 1 | 25 ft-lbf/lbm | 50 lbm/ft³ |

| 2 | 47 ft-lbf/lbm | 33 lbm/ft³ |

If the pressure at a is 100 psia, what is the pressure at b?

a line 1 10'

D 10'

b line 2 FIGURE RQ1-14