Steady flow of 10kg and temperature of 200°C. If the heat dissipation from the alloy is 715.5kJ. what is the final temperature. Use Cp = 477J/kg.k O 450 C 350 C None of the these O 150 C 250 C
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- In a turbine 4500 kg/min of air expands polytropically from 425 kPa & 1360K to 101 kPa. The exponent n is equal to 1.45 for the process. Calculate the heat and work steady flow.In a nozzle, steam enters at T = 673.15 K and P = 800,000 Pa while u = 15m/s. It exits at T = 400,000 Pa and u = 320m/s. What is the ration of the inlet and outlet diameters (D1/D2)?(Use Mollier Chart, note: tolerance of temperature & enthalpy is∓1,pressure is ∓0.1, entropy is ∓0.01) Steam at a pressure of 3.5546 Mpa and temperature of 400 degree celsius.Locate the specificenthalpy and specific entropy.
- A blade pair in an axial flow compressor is being designed. The axial flow component of gas velocity is 174m/s. The engine diameter at the mean blade height is 0.73m and the blade height at the rotor inlet is 0.21m. The rotor's absolute inlet flow angle is 26 degrees. The stagnation conditions at the inlet to the blade pair are 298K and 130kN/m² Using Cp 1.005k/kg/K, R-0.287k/kg/K, and taking the ratio of specific heat capacities as 1.4, calculate the engine mass flow rate to the nearest kg/sThere are compressed 11.33 m3/min of air from 103.42 kPa, 26.7°C to 827.36 kPa. All clearances are 8%. (a) Find the isentropic power and piston displacement required for a single stage compression. (b) Using the same data, find the minimum ideal power for two-stage compression when the intercooler cools the air to the initial temperature . (c) Find the displacement of each cylinder for the conditions of part (b). (d) How much heat is exchanged in the intercooler? (e) For a compressor efficiency of 78%, what driving motor output is required?There are 5kg/s of CO2 (R=188.96kJ/kg-K, k=1.288) gas compressed polytropically with n=1.2 from 103kPa, 60C to 1200kPa. What is the Work (steady flow) done? (kW)
- Pls. Answer..thank you!? A steam engine develops 60 Bhp with dry saturated steam at 1034.25 kpa absolute and exhaust at 124.1 kpa. Steam consumption is 736.36 kg/hr. Calculate the thermal efficiency in percent of equivalent Rankine engine.Water at 180 degrees Celsius (Psat = 1.0 MPa) and 13 MPa enters a boiler. It then leaves the boiler at 500 degrees Celsius. What is the mass flowrate of water?1. 0.085 m3 of air are compressed isentropically from 1937 kPa and -4 oC to 5873 kPa . Find (a) t2 in oC and V2, (b) Wnf, and © H and U. 2. In a turbine 4500 kg/min of air expands polytropically from 425 kPa & 1360K to 101 kPa. The exponent n is equal to 1.45 for the process. Calculate the heat and work steady flow.
- Steam turbine with 1.5kg / s mass flow, 6MPa pressure, 500C temperature and 20 m / s speed is entering. The pressure at the outlet is 0.5MPa, the speed is 75 m / s and the degree of dryness is 0.95. Turbine power If its output is 2500kW, calculate the heat transfer from the turbine per unit time.A combustion chamber consists of combustion pipes with a diameter of 15 cm. Compressed air enters the pipes at 550 K, 480 kPa and 80 m/S (Figure 3). A fuel with a thermal value (ID) of 42000 kJ/kg is injected into the air and burned in such a way that the mass air-fuel ratio (HY) is 40. Considering the combustion event as a heat transfer to the air, at the exit of the combustion chambera) temperature,b) pressure,c) find the speed and Mach Number values. Note : k=1.4, cp=1.005 kJ/kg.K, R=0.287 kJ/kg.KA single row impulse turbine develops 132.4 kW at a blade speed of 175 m/s, using 2 kg of steam per sec. Steam leaves the nozzle at 400 m/s. Velocity coefficient of the blades is 0.9. Steam leaves the turbine blades axially. Determine nozzle angle, blade angles at entry and exit, assuming no shock.