Question

Hw#2 (Protect FILE TOOLS VIEW PROTECTED VIEW Be careful-files from the internet can contain vinuses. Unless you need to edit, it's safer to stay in Prot 1. An air-standard Otto cycle has a compression ratio of 9.0. At the beginning of compression, p1-100 kPa and T1-300 K. The heat addition per unit mass of air is 1400 kJ/kg. Determine (a) the net work, in kJ per kg of air. (b) the thermal efficiency of the cycle. (e) the maximum temperature in the cycle, in K. 2. At the beginning of compression in an air-standard Diesel cycle, p1-96 kPa, V1 = 0.016 ms, and T1-290 K. The compression ratio is 15 and the maximum cycle temperature is 1290 K. Determine (a) the mass of air, in kg. (b) the heat addition and heat rejection per cycle, each in kl. (c) the net work, in kJ, and the thermal efficiency. 3. Air enters the compressor of an ideal air-standard Brayton cycle at 100 kPa, 300 K, with a volumetric flow rate of 10 m3/s. The turbine inlet temperature is 1400 K. For compressor pressure ratios of 2 and 10, find (a) the thermal efficiency of the cycle. 1-2 OF 2 Type here to search

Answer 1

1400 1c3 8 S- L 2 2. 2 2 22 467k