Engineering, 12.02.2020 06:03, AysiaRamosLee
Someone has suggested that the air-standard Otto cycle is more accurate if the two polytropic processes are replaced with isentropic processes. Consider such a cycle when the compression ratio is 8, P1 = 95 kPa, T1 = 15°C, and the maximum cycle temperature is 900°C. Determine the heat transferred to and rejected from this cycle, as well as the cycle’s thermal efficiency. Use constant specific heats at room temperature. The properties of air at room temperature are cp = 1.005 kJ/kg·K, cv = 0.718 kJ/kg·K, R = 0.287 kJ/kg·K, and k = 1.4.
Answers: 3
Engineering, 03.07.2019 15:10, margaret1758
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
Answers: 1
Engineering, 04.07.2019 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
Engineering, 04.07.2019 19:10, pjgolden04
How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?
Answers: 2
Someone has suggested that the air-standard Otto cycle is more accurate if the two polytropic proces...
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