Otto, Diesel, and Dual Cycles
An air-standard dual cycle has a compression ratio of 16. At the beginning of compression, p1 = 14.5 lbf/in.2, V1 = 0.5 ft3, and T1 = 50°F. The pressure doubles during the constant-volume heat addition process. For a maximum cycle temperature of 3000°R, determine
(a) the heat addition to the cycle, in Btu.
(b) the net work of the cycle, in Btu.
(c) the thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
(e) To investigate the effects of varying maximum cycle temperature, plot each of the quantities calculated in parts (a) through (d) for maximum cycle temperatures ranging from 3000 to 4000°R.
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