A single-stage, single-acting air compressor running at 1000 rev/min delivers air at 25 bar. For this purpose the induction and free air conditions can be taken as 1.013 bar and 15 °C, and the FAD as 0.25 m³/min. The clearance volume is 3% of the swept volume and the stroke/bore ratio is 1.2/1. Calculate: (i) the bore and stroke; (ii) the volumetric efficiency; (iii) the indicated power;

A single-stage, single-acting air compressor running at 1000 rev/min delivers air at 25 bar. For this purpose the induction and free air conditions can be taken as 1.013 bar and 15 °C, and the FAD as 0.25 m³/min. The clearance volume is 3% of the swept volume and the stroke/bore ratio is 1.2/1. Calculate: (i) the bore and stroke; (ii) the volumetric efficiency; (iii) the indicated power;

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Consider a reciprocating air compressor with two-stage, 6.8 m³/min free air delivery at atmospheric conditions of 125 kPa and 18 °C, respectively. The polytropic compression index is 1.28, while the delivery pressure is 1,706 kPa. The mechanical and motor-drive efficiencies are 85% and 93%, respectively. Accept complete inter-cooling and neglect clearance volumes. What is the intermediate pressure in kPa to 1 decimal place? Ciel Saue and Suhmit to and ub mit Cial Saua A 77 A
Give: Otto cycle Compression ratio = 9 Intake air is at 100kpa and 20°C Maximum cylinder volume = 500 cm^3 Temperature at the end of the adiabatic compression = 800 K CP = 1.01kJ/kgk, Cv = 0.718 kJ/kg, k = 1.4, R = 287.1 J/kgk m= 0.000595 T3 = 1926
5.16. For a centrifugal compressor rotating at 2500 rpm, find the compression ratio for the following specifications. T = 300 K; 79 (volumetric flow rate)=1.25 m³/s and t (the thickness of the flow section at the exit) = 0.15 m. = 0.85; r, = 0.55; ra = 0.015; B, 60°,
Q6/ A single compressor system using 134a has a three evaporators of 5, 15 and 20 tons capacities. All evaporators operating at the same temperature of 0 °C. The condenser pressure is 12 bar and the refrigerant exit of the condenser as a sub cool at 40 °C. The discharge from the evaporator is dry saturated vapour *: and the compression is assumed to be isentropic. The cop is
4. A single-stage cylinder air compressor is rated at 6.5 cubic meter per minute of air .Suction conditions are 1 atm and 27 deg C and discharge pressure of 1034 KPa. The compression process follows PV1.35 = C. What is the engine Kw power needed to drive the unit if the combined engine-compressor efficiency is 84%?
Q3: A single stage, double acting air compressor running at 1000 rev./min delivers air at 25 bar and 170°C For this purpose, the induction air conditions can be taken as 1.013 bar and 15°C, and the air deliver at rate 0.25 m³/min. The clearance volume is 3% of the swept volume and the stroke bore ratio is 1.2/1. Calculate the bore and stroke, the volumetric efficiency, the indicated power, and the isothermal efficiency.
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2 /min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1.Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Based on pictures below 1 which formula number will be used to evaluate the mass flow rate of air? 2 which formula number will be used to evaluate the delivery volume?
Give: Otto cycle Compression ratio = 9 Intake air is at 100kpa and 20°C Maximum cylinder volume = 500 cm^3 Temperature at the end of the adiabatic compression = 800 K CP = 1.01kJ/kgk, Cv = 0.718 kJ/kg, k = 1.4, R = 287.1 J/kgk T4 = 800 K
An air standard gas turbine engine operates on an overall pressure ratio of 4 and between the temperature limits of 70 F and 1600 F. The efficiencies of compressor and turbine are 0.82 and 0.92, respectively. To modify, a regenerator of effectiveness 0.65 is added. (a) Assuming constant specific heats, evaluate the compressor work (b) calculate the thermal efficiency Show complete solution on a paper.
Looking at just the bypass flow of a large turbofan, assume that Min = 0.8, Tin = 225 K, Mdot = 90 kg/s, PRF = 1.6 and hF = 0.90. Let P0 = 25 kPa. Determine: (a) Vexit, (b) Thrust from the bypass flow assuming that it is chocked (MEX = 1).
A single stage single acting reciprocating air compressor has 0.25 m x 1.75 m runs in 750 rpm is to deliver 0.20m³ free air per second from 101.3 kPa to 355 kPa. Calculate (a) the volume displacement (b) the volumetric efficiency (c) the isothermal work done, compression is at pV =c (d) the isothermal compressor efficiency if the the indicated power of compressor is 40kW