c)A three stage, single acting, reciprocating air compressor has similar operating parameters tothat in part a). The low pressure cylinder has a 450mm bore and 300mm stroke. The clearancevolume of the low pressure cylinder is 5% of the swept volume. Intake pressure andtemperature are 1 bar and 18°C, respectively. The final delivery pressure is 15bar. Intermediatepressures are ideal and inter-cooling is perfect. The compression and expansion index can betaken as 1.3 throughout. Determine,i)The intermediate pressures;ii)The effective swept volume of the low pressure cylinder;The temperature and volume of air delivered at 15bar;The work done/kg of airiv)[R=0.29 kJ/kg]d)What improvements are observed from the use of the 3-stage compressor in part c) compared to thesingle stage compressor in part a). Are there any drawbacks to using the 3-stage compressor.part A)A single stage, single acting, reciprocating air compressor has a cylinder of 450mm bore and300mm stroke. The clearance volume of the cylinder is 5% of the swept volume. Intake pressureand temperature are 1 bar and 18°C, respectively. The final delivery pressure is 15bar. Thecompression and expansion index can be taken as 1.3 throughout.Determine:i) The temperature and volume of air delivered,ii) The work done/kg of air.[R=0.29 kJ/kg]

A three stage, single acting, reciprocating air compressor has similar operating parameters to that in part a). The low pressure cylinder has a 450mm bore and 300mm stroke. The clearance volume of the low pressure cylinder is 5% of the swept volume. Intake pressure and temperature are 1 bar and 18°C, respectively. The final delivery pressure is 15bar. Intermediate pressures are ideal and inter-cooling is perfect. The compression and expansion index can be taken as 1.3 throughout. Determine, i) The intermediate pressures; ii) The effective swept volume of the low pressure cylinder; The temperature and volume of air delivered at 15bar; iii)

A three stage, single acting, reciprocating air compressor has similar operating parameters to that in part a). The low pressure cylinder has a 450mm bore and 300mm stroke. The clearance volume of the low pressure cylinder is 5% of the swept volume. Intake pressure and temperature are 1 bar and 18°C, respectively. The final delivery pressure is 15bar. Intermediate pressures are ideal and inter-cooling is perfect. The compression and expansion index can be taken as 1.3 throughout. Determine, i) The intermediate pressures; ii) The effective swept volume of the low pressure cylinder; The temperature and volume of air delivered at 15bar; iii)

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

NEED ASAP. Please solve correctly and show your solutions completely. Thank you!
2. A compression ignition engine draws in air at a pressure of 1.75 bar (abs) and compresses it adiabatically into the clearance volume before the fuel is injected. The stroke volume is 4.04 m³ and the clearance volume is 2.004 m³. Calculate: a. The pressure at the end of compression b. the final temperature, given an initial temperature of 30°C c. the compression ratio of the engine. Bonus: Based on the numbers given above is this a logical problem in an automobiles engine or is this a purely hypothetical question?
A single cylinder petrol engine works on the Otto cycle and draws in air at 1.01 bar and 22°C. The bore and stroke of the engine are 105 mm and 130mm respectively and the clearance volume is 13% of the swept volume. If the maximum temperature in the cycle is 1400°C find; a. The Volume at the remaining points of the Cycle b. The Heat Supplied, Heat Rejected, & Efficiency of the Cycle c. The mean effective pressure
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
3. A single acting reciprocating compressor is needed to compress 100 kg of air per hour from 100 kPa and 25 deg Cintake condition to 900 kPa delivering pressure. The compression is expected to follow PV to the power 1.25 = C. If the compressor has a clearance factor of 4% and it is expected to operate at 300 rpm, what is the required piston displacement?
a. Assume a blower operating at 4000 rpm compressing air from 68°F 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. 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°F.
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.
9.2 The inlet stagnation temperature of a centrifugal compressor rotating at 10,000 rpm is 20°C. The inlet flow is axial and the blades are radially tipped at the exit. It is required to produce a stagnation pressure ratio of 2.8 when the total to total effi- ciency is 0.85. It has 19 blades and a mass flow rate of 3.0 kg/s. Through measure- ments, the density of air at the exit of the impeller is found to be 1.5 kg/m³. The width of the blades at the exit is 1 cm. Calculate the following: (a) power required to drive the compressor, (b) diameter of the impeller, and (c) absolute Mach num- ber at the exit. Use Stanitz's equation for the slip coefficient. Ans: 355 kW; 0.694 m; 0.897
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 KW 1.What is the isothermal power of the compressor in kW to 2 decimal places in kW? 2. which formula will be used to evaluate the isothermal efficiency? 3. which formula will be used to evaluate the delivery volume? 4. What is the induced volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places?
!
Complete the Carnot cycle performed by air if the parameters in points 1 and 3 are the following: Point 1: P_1=2MPa, T_1=600kPoint 3: P_2=120 KPa, T_2= 300K R=287 J/(Kg K)-air only. Please type answer no write by hend.
QUESTION 20 A single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 7.2 cubic meters per min and the air must be delivered at a pressure of 674 kPa. The free air conditions are 101.3 kPa and 15 degrees Celsius. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the delivery air. Hint answer usaully in C and no need for °C.