4. An air standard dual (limited pressure) cycle has a CR of 15 and compression begins at 0.1 MPa, 40 °C. The maximum pressure is 6 MPa and heat added is 1.675 MJ/kg. Compute 235 kJkg 1440 kJ/k (a) The heat supplied at v = C per kg of air (b) the heat supplied at p = C per kg of air 1 of 3 1014 k/kg] 0.5% (c) the work done per kg of air, (d) the cycle efficiency (e) the temperature at the end of the v = C heating process, (f) the cut-off ratio, and L21 MP (g) the m.e.p. of the cycle.

Question
4. An air standard dual (limited pressure) cycle has a CR of 15 and compression begins at 0.1 MPa,
40 °C. The maximum pressure is 6 MPa and heat added is 1.675 MJ/kg. Compute
235 kJkg
1440 kJ/k
(a) The heat supplied at v = C per kg of air
(b) the heat supplied at p = C per kg of air
1 of 3
1014 k/kg]
0.5%
(c) the work done per kg of air,
(d) the cycle efficiency
(e) the temperature at the end of the v = C heating process,
(f) the cut-off ratio, and
L21 MP
(g) the m.e.p. of the cycle.

Image Transcription

4. An air standard dual (limited pressure) cycle has a CR of 15 and compression begins at 0.1 MPa, 40 °C. The maximum pressure is 6 MPa and heat added is 1.675 MJ/kg. Compute 235 kJkg 1440 kJ/k (a) The heat supplied at v = C per kg of air (b) the heat supplied at p = C per kg of air 1 of 3 1014 k/kg] 0.5% (c) the work done per kg of air, (d) the cycle efficiency (e) the temperature at the end of the v = C heating process, (f) the cut-off ratio, and L21 MP (g) the m.e.p. of the cycle.

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