1. The Emergency Plant of a Shopping Center consists of a gas turbine that burns propane and has a compression ratio equal to 10. If the plant has the characteristics shown in the figure:

(a) What is the Power and the thermal efficiency of it?

(b) If the efficiency of the combustion chamber is 80% How long can the emergency plant last? Suppose there are 80 L of liquid propane available (ρ propane = 0.5 kg / L).

(c) With what excess of air is the combustion chamber working?

(d) How much energy will the turbine have produced in kW.h when the propane is finished? Assume that the turbine and the compressor are ideal.

The calorific value of Propane is: LHV = 46340 kJ / kg.

2. To improve the time that this emergency plant can be on, an engineer suggests placing a regenerator of 90% effectiveness.

(a) How long would the emergency plant last now?

(b) How much energy will be produced now when the propane is finished?

(c) Should the regenerator be used?

Transcribed Image Text:

bomba de combustible 80 Lde Propano aire Combastión T, = 1400 C rc = 10 Comp. B: Turbine A fo P= 75 kPa P = 75 kPa T= 20 C fv,= 100 m min bomba de combustible 80 Lde Propano aire Combastión T, = 1400 C rc = 10 Comp. B: Turbine A fo P= 75 kPa P = 75 kPa T= 20 C fv,= 100 m min

Answer rating: 100% (QA)

Given that a for a gas Turbine LHy ... View the full answer