This engine is operating a Rankine cycle on a biphasic fluid (Fig. 7.27). The cycle consists of five processes:

Figure 7.27

• 1→ 2: The fluid coming out of the turbine is completely condensed (1). The liquid goes then through an isentropic compression from an initial pressure p₁ to a final pressure p₂.

• 2→ 3: The liquid is heated up at constant pressure p₂ by the boiler. It undergoes an isobaric heating until it reaches the vaporisation temperature (3).

• 3→ 4: The liquid is vaporised at constant pressure p₂. It goes through a phase transition until saturation is reached (4).

• 4→ 5: The fluid undergoes an isentropic expansion from an initial pressure p₂ to a final pressure p₁.

• 5→ 1: The fluid is condensed at constant pressure p₁. It goes through a phase transition until full condensation is reached (1). 

Analyse this cycle by using the following instructions:

Transcribed Image Text:

T 2 P₂ S₁ S₂ P₁ P₂ 5 S