Determine Efficiency outbut former = 333J Input pouun = 667 J
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- A fan require at least 4.5 hp to deliver 18,000 CFM of air running at 320 rpm. For a service factor of 1.15, find the designed horsepower of the sprocket.e in a marine engine is taken up by a 300 mm in diameter: The thrust on the shaft is 20( equal t0 0.05 and assuming intensiry of press diameter of the collars and th, 16 kW, e number ofThe piston displacement of a double acting compressor is 0.358 m3/sec, delivers gas from 101. 325 Kpa and300°K to 675 Kpa at the rate of 0.166 m3/sec at 150 rpm. Value of n for compression and expansion is 1.33. Find the compressor percent clearance.
- Assume a blower operating at 4000 rpm compressing air from 68oF and 14.7psia to 8.5psig, handling 16000cfm at the design point with an efficiency of 70%. It is desired to find the operating conditions (BHP, H and Q) at 3600 rpm.From a test of an air compressor driven directly by a steam engine , the following data and results were obtained: capacity, 800 cfm; suction at 14.7 psia; discharge at 110 psia; indicated work of the compressor, 155 hp; indicated work of steam engine, 172 hp. Calculate (a) the compression efficiency and (b) the overall efficiency. Ans. (a) 90.06%; (b) 81.16% with step by step please! thanksA one-stage compressor with an ideal intercooler receives 0.5m3/s of Helium at 150kpa and 300K and discharges it at 8600kpa. Find the heat rejected(kw) at the intercooler. Ans: 0 The initial condition of air in an air compressor is 98kpa and 27C and discharges at 500kpa. The bore and stroke are 360mm and 390mm, respectively with percent clearance of 7% running at 350rpm. Find the mass flow of air in kg/s at suction. Ans: 0.22 A single suction centrifugal pumps delivers 25ft3/s of water at a head of 12m and running at 650rpm. What is the specific speed of the pump in rpm? Ans. 4380.75
- please include a fbd the answers i got are, vC=(-6.500uR+5.520u theta+5.300uz)ft/s aC=(-0.6624uR-1.560u theta)ft/s2a. Assume a blower operating at 4000 rpm compressing air from 68 degree Fahrenheit and 14.7psia to 8.5psig, handling 16000 cfm at the design point with an efficiency of 70%. It is desired to find the operating conditions (BHP, H and Q) at 3600 rpm.b. Same as problem (a) except assume that the speed and inlet temperature remains the same, but the inlet pressure at the point considered, drops to 10psia.c. Same as problem (a) except assume that the speed and inlet pressure remains the same, but the inlet temperature rises to 100 degree Fahrenheit.A steam turbine is operated under the conditions shown in the figure.Define:a. steam flow rate (kg/min) to produce 1000 kW powerb. actual steam rate (kg/kWh)!c. turbine efficiencyd. What type of steam turbine belongs to this?
- Solve the ff. The discharge pressure of an air compressor is 5 times the suction pressure. If the volume flow at suction is 0.7m3/s and discharge volume flow of 0.2217m3/s, what is the compressor power(hp) if suction pressure is 100kpa. Ans. 191.72 A double acting air compressor has a cylinder dimension of 50cm x 60cm, 750rpm will have a volume displacement (m3/s) of: Ans. 2.945 A pump has a specific speed of 45 and 600rpm when it delivers 0.01m3/s. Find the head developed by the pump in ft. Ans. 926.07In the above solution the run of AC is taken to be 3in. I think this is incorrect since B and D are not inline.A single stage double acting air compressor delivers 15 m3 of free air per minute from 1 bar to 9 bar. The speed of compressor is 300 rpm. If pv1.3= constant, and clearance is 1/16th of the swept volume, find the diameter and stroke of compressor. Take L/D ratio =1.5.