Assuming the clearance is negligible for a single stage compressor with the following data. Atmospheric pressure: 90 kPa Atmospheric temperature: 17 ˚C Delivery pressure: 7 bar Free air delivery flow rate: 0.2 m3/min Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Calculatate the following 1 )Evaluate the mass flow rate of air inside the compressor operating isentropically in kg/min to 3 decimal places. 2 ) What is the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal? 3 ) What is the power input to the compressor in kW to 2 decimal places if

Assuming the clearance is negligible for a single stage compressor with the following data. Atmospheric pressure: 90 kPa Atmospheric temperature: 17 ˚C Delivery pressure: 7 bar Free air delivery flow rate: 0.2 m3/min Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Calculatate the following 1 )Evaluate the mass flow rate of air inside the compressor operating isentropically in kg/min to 3 decimal places. 2 ) What is the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal? 3 ) What is the power input to the compressor in kW to 2 decimal places if

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.19P

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Assuming the clearance is negligible for a single stage compressor with the following data.Atmospheric pressure: 90 kPaAtmospheric temperature: 17 ˚CDelivery pressure: 7 barFree air delivery flow rate: 0.2 m3/min Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the power input to the compressor if compression is isentropic in kW to 3 decimal places?
Assuming the clearance is negligible for a single stage compressor with the following data.Atmospheric pressure: 90 kPaAtmospheric temperature: 17 ˚CDelivery pressure: 7 barFree air delivery flow rate: 0.2 m3/minTake “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the power input to the compressor in kW to 2 decimal places if the compression is polytropic compression process with n=1.25?
Assuming the clearance is negligible for a single stage compressor with the following data.Atmospheric pressure: 90 kPaAtmospheric temperature: 17 ˚CDelivery pressure: 7 barFree air delivery flow rate: 0.2 m3/minTake “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal?
Assuming the clearance is negligible for a single stage compressor with the followingdata.Atmospheric pressure: 90 kPaAtmospheric temperature: 17 ˚CDelivery pressure: 7 barFree air delivery flow rate: 0.2 m3/minTake “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1. What is the power input to the compressor in kW to 2 decimal places if the compression is polytropic compression process with n=1.25? 2. What is the delivery temperature of air for an isentropic compression process in Kelvin to 1 decimal place? 3. What is the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal?
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?
Consider a reciprocating air compressor with 3-stage, 7.2 m3/min free air delivery at atmospheric conditions of 144 kPa and 26 0C, respectively. The polytropic compression index is 1.34, while the delivery pressure is 1,665 kPa. The mechanical and motor-drive efficiencies are 85% and 93%, respectively. Accept complete inter-cooling and neglect clearance volumes. If the specific heat capacity of air at constant pressure and volume are 1.006 kJ/kg K and 0.716 kJ/kg K, respectively. Calculate the rate of heat rejected in the intercooler in kilowatt to 1 decimal place.
Consider a reciprocating air compressor with two-stage, 6.8 m3/min free air delivery at atmospheric conditions of 107 kPa and 19 0C, respectively. The polytropic compression index is 1.21, while the delivery pressure is 2,294 kPa. The mechanical and motor-drive efficiencies are 85% and 93%, respectively. Accept complete inter-cooling and neglect clearance volumes. What is the delivery air temperature in C to no decimal
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 0.94 cubic meters per min and the air must be delivered at a pressure of 660 kPa. The free air conditions are 101.3 kPa and 15°C. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. 1. Calculate the delivery air temperature (in °C) 2. The volume of air induced into the compressor is ____ m3
The following data were obtained from a performance test of a 10 x 9-cm single acting, water jacketed two-stage air compressor: Pressures: Atmospheric, 102 kPaa; leaving first-stage, 634 kPaa; leaving second-stage, 4.20 MPa. Temperatures: Atmospheric, 240C; leaving first-stage, 1080C; entering 2nd stage, 250C; leaving 2nd stage, 1270C Compressor speed, 648 rpm Power input to motor, 5.65 kW Motor and belt efficiency, 81.5% The following are calculated from test data: Air flow rate, 0.387 ??⁄??? Compression exponents: 1st stage 1.15; 2nd Stage, 1.2 Calculate: a) Approximate indicated power b) Power for isothermal compression c) Shaft power d) 1st stage piston displacement e) Actual volumetric efficiency f) Isothermal compression efficiency g) Mechanical efficiency based on the approximate indicated power h) Over-all efficiency of the compressor
Assuming the clearance is negligible for a single stage compressor with the following data : Atmospheric pressure = 90 kPa, Atmospheric temperature = 17 degrees, Delivery pressure = 7 bar, Free air delivery flow rate = 0,2 m³/min. Take n= 1,3, Cp=1,005 KJ/Kg K, Cv=0,718 KJ/Kg K Determine the following : A) Which formula is used to evaluate the delivery temperature for an isentropic? B) the delivery temperature of air for a polytropic compression process with n=1,25 in Kelvin to 1 decimal place? C) the mass flow rate of air inside the compressor operating isentropically in kg/min to 3 decimal places? D) the power input to the compressor in kW to 2 decimal places if the compression is polytropic compression process with n=1,25? E) the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal? F) the power input to the compressor if the compression is isentropic in kW to 3 decimal places? G) the delivery temperature of air for an isentropic…
A single-stage, single-acting air compressor running at 1000 rev/min delivers air at 2.5 MPa bar. For this purpose the induction and free air conditions can be taken as 1 atm 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. Determine; (i) the bore and stroke; the swept volume, Vs; the delivery temperature, T2; the volumetric efficiency; the indicated power; and the isothermal efficiency.
Differentiate the operation, structure and usage of (1) reciprocating air compressors and (2) rotaryscrew type air compressor.