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The following data refer to an analysis of a dual combustion cycle with a gas having specific heats varying linearly with temperature:
The pressure and temperature of the gas at the end of compression are 31 bar and 227 °C respectively; the maximum pressure achieved during the cycle is 62 bar, while the maximum temperature achieved is 1700C.
The temperature at the end of the expansion stroke is 1240 °C. The increases in entropy during constant volume and constant pressure combustion are 0.882 and 1.450 kJ/kg K respectively. Assuming that the fluid behaves as an ideal gas of molecular weight, mw - 30.5 calculate the equations for the specific heats, and also the expansion ratio if that process is isentropic.
Consider the following investment opportunity: Initial Cost = $126,890; Annual Benefit = $23,000; Useful Life = 30 Years; Salvage Value = $0; What interest rate results in a Benefit Cost Ratio equal to one?
the flux density of a magnetic field is 20000 lines per sq in. what length of conductor should cut the flux to produce
A laminated thick-walled cylinder was fabricated by shrinking a steel (E=200 GPa and nu=0.03) sleeve having an inside diameter of 199.800mm and an outside diameter of 300mm onto a steel tube with an inside diameter of 100mm and an outside diameter of..
a racing boat planes over the water at 80 mph. the water temperature is 75f. the wetted surface of the boat i.e. the
A compressor is to compress saturated R-134a at 14C to 900 kPa, and a power of 4.6 kW is needed when the flow rate is 0.26 kg/s. Please determine the compressor isentropic efficiency. The temperature at compressor exit
A journal bearing is proposed for a steam engine. the load on the journal is 3 kN, diameter 50 mm length 75 mm speed 1600 r.p.m , diametral clearance 0.001 mm ambient temperature 15.5 C oil SAE 10 is used and the film temperature is 60 C. Determine t..
refrigerator operates at steady a coefficient of performance of 5.0 within a kitchen at 238c. the refrigerator rejects
An initially empty cylinder is filled with air from 70 F, 15 psia until it is full. Assuming no heat transfer is the final temperature larger, equal to or smaller than 70 F? Does the final T depend on the size of the cylinder?
If the operating speed of the motor is 1500 rpm, design the girder and the columns such that the fundamental frequency of vibration of the building frame is greater than the operating speed of the motor. Use two beam and two bar elements for the i..
changes made to stainlees steel piping to reduce intergranular stress corrosion cracking describe four modifications
Shop order 7777 is for 600 of part 8900. From the routing file, it is found that operation 20 is done on work center 300. The setup time is 3.5 hours, and run time is 0.233 hours per piece. What is the required capacity on work center 300 for shop..
Air enters a well-insulated turbine operating at steady-state conditions with negligible inlet velocity, 4 MPa, and 100°C. The air expands to an exit pressure of 100 kPa. The exit velocity and temperature are 90 m/s and 100°C, respectively. The diame..
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