Question

1. In a Dual cycle the heat transfer during the constant volume process is double that during the constant pressure process. The compression ratio is 14 and the air initial conditions are 1 bar and 27oC. If the maximum pressure in the cycle is 60 bar, calculate:

   1. Maximum temperature

   2. Heat added at constant volume and constant pressure per kg of air

   3. Cycle thermal efficiency

   4. Net work per kg of air

   5. Exergy destroyed associated with the cycle. Assume the source temperature to be the same

      temperature as the maximum cycle temperature, and the sink temperature to be the same as

      minimum cycle temperature.

   6. Sketch the cycle on P-v and T-s diagrams

Answer 1