Effects of Pressure Drops on the Performance Characteristics of Air Standard Otto Cycle

Figure 2

Efficiency versus compression ratio is plotted for different values of loss coefficients (pressure drop at point 1—𝜀₁, pressure drop at point 3—𝜀₃, compression isentropic efficiency—𝜂_𝑐, expansion isentropic efficiency 𝜂_𝑒, and heat leak coefficient—𝑘_leak). The loss coefficients' values are (in the same order that appeared above) (a) 1, 1, 1, 1, 0; (b) 0.8, 0.8, 1, 1, 0; (c) 0.6, 0.6, 1, 1, 0; (d) 0.6, 0.6, 0.97, 0.97, 0; (e) 0.6, 0.6, 0.97, 0.97, 0.05; (f) 0.6, 0.6, 0.97, 0.97, 0.1; (g) 0.6, 0.6, 0.97, 0.97, 0.5.