Читать книгу Introduction to Desalination - Fuad Nesf Alasfour - Страница 19

1 Flashing process, where sudden drop in pressure causes water to evaporate via flashing, it is always associated with lightning and heat release.

2 Hence

3 P2 = 3.17 kPa

4 Entropy generation

Exergy destruction

Extra activity:

Student can perform the following:

1 Describe the flashing process in MSF system.

2 Sketch T–v, P–v, and T–s diagrams showing flashing process.

3 Perform a parametric study to investigate the effect of initial water temperature on final phase. Sketch and explain.

4 Perform a parametric study to investigate the effect of VB on final phase. Sketch and explain.

5 Calculate the amount of heat release from flashing process, and explain physically what is the source and cause of such heat.

6 Perform a parametric study to investigate the effect of ratio on irreversibility.