A reciprocating compressor cómpresses 1 m³/min of gas from 1 bar to 5 bar. The clearance is 8% and the isentropic compression index is 1.4. Determine the percentage increase in compression work if the re-expansion index is 1.1 instead of 1.4. [Ans. 7.3 % 1

A reciprocating compressor cómpresses 1 m³/min of gas from 1 bar to 5 bar. The clearance is 8% and the isentropic compression index is 1.4. Determine the percentage increase in compression work if the re-expansion index is 1.1 instead of 1.4. [Ans. 7.3 % 1

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

Related questions

Q: A constant force of 512 N was done on an object. If it is known that 1024 Joules of energy was…

A: Given Force, F = 512 N Work done, W = 1024 J Find Distance, d

Q: 3- The following rod rotates about AB axis. If the angular velocity and acceleration are…

Q: 100 mm 50 mm 150 mm An orifice with a 50 mm in diameter opening is used to measure the mass flow…

Q: The internal and external diameter of the impeller of a centrifugal pump are 200 mm and 400 mm…

A: The beginning and exterior diameters of a centrifugal pump's impeller are 200 mm and 400 mm,…

Q: The external and internal diameter of a single plate clutch are 125 mm and 100 mm, respectively. It…

Q: 1 kg of air expands from a pressure of 700 kPa and a temperature of 650 K to a pressure of 200 kPa…

Q: Water with a specific heat of 1 BTU/lbm F is pumped using a 1-hp jet pump from a well that is 20 ft…

A: Given Specific heat, C = 1 BTU / lbm Flow rate, m = 5 gal/min…

Q: Hand written plzz A B Draw the shear and bending-moment diagrams for the beam and loading shown. Wo

Q: The rigid bar DEF is welded at point D to the steel beam AB. For the loading shown, determine (a)…

Q: 2/72 With what minimum horizontal velocity u can a boy throw a rock at A and have it just clear the…

A: When an object is launched obliquely near the earth's surface, it follows a curving path with…

Q: 3- The following rod rotates about AB axis. If the angular velocity and acceleration are…

A: Given Data The angular velocity is:ω=6 rad/s The angular acceleration is:α=-25 rad/s2 To find: The…

Q: The first answer for this problem was incomplete and the answer was cut off so if anybody can…

A: In this problem, it is saying that first answer is incomplete. It means the total acceleration at…

Q: When &-0, the spring on the firing mechanism is unstretched. The arm is pulled back such that 100 mm…

Q: v=0 C4 +24V 2 E- OV 3 # 2-1 K1 2 1Y TIT 1 3 can you please explain how this circuit works 5 $2$

Q: An ideal gas whose R = 25.8 ft-lbf/lbm-R and k = 1.09 was cooled from 636 R to 565 R at constant…

A: T1 = 636 R T2 = 565 R R = 25.8 ft-lbf/lbm-R k = 1.09

Q: (b) What is the average angular velocity of each pulley if the rope accelerates from 5 m/s to 10 m/s…

Q: Q2/ The six cylinder of a single- acting, two-stroke cycle Diesel engine are pitched 1 m apart and…

Q: This instrument uses an onboard radio interrogator that communicates with a ground radar…

Q: Po Q3.A frictionless piston/cylinder contains saturated water at 35°C. The piston cross-sectional…

Q: 2) If the bearing pads at A and B support only vertical forces, determine the greatest magnitude of…

Q: Two components of a steam engine are shown in the figure below. The turbine is adiabatic. a.…

Q: A single block brake, as shown, has a tangential braking force of 500 N and normal force 1200 N…

Q: A strong magnet repulses one another with a variable force that can be approximated by the equation…

A: Given data The variable force applied = F = - ln(y/10) kN, where y is in millimeters. We have to…

Q: Draw shear force and bending moment diagrams for the beam and loading in the figure.

Q: ust give a short answer (type written) 1. How is a tool bit blank prepared for use? 2. What is a…

Q: This instrument normally used almost during every phase of flight, makes use of an antenna mounted…

A: following is the correct answer to the above problem-

Q: Specific gravity of an oil is 0.8. Find its weight density.

A: Specific gravity = 0.8

Q: A phase change, or transition, occurs when a substance undergoes a change in state on a molecular…

Q: . The cantilever beam is subjected to loading as shown. a) Make section between A and B (0≤x≤1) and…

A: Let moment, M= 20 kNm Let uniform distributed load, w= 8 kN/m Let force, P= 5 kN Length, AB= 1 m…

Q: Determine the moment of inertia for shaded area about x and y axis. 60 mm 30 mm MATHalino.com 45 mm…

Q: 60° looks 50 g C 80° 6 G 30 VO 38 66 f 7 ft 78 ) ។ Yo >15 3ft 4ft 2ft Find force for all member? E

Q: An engineer designing a light aircraft is trying to make an estimate of the diameter of the…

Q: bet The compression ratio is the ratio of the initial volume to the volume after isentropic…

Q: An engineer designing a light aircraft is trying to make an estimate of the diameter of the…

Q: A glass tube of internal diameter 3 mm is immersed in mercury. The angle of contact of mercury with…

A: A glass tube with an internal diameter of 3 mm is immersed in mercury, with a contact angle of 130…

Q: Determine the length of side C of the triangle shown in Figure 2. 30 m 65⁰ 45 m

Q: A Borda's mouthpiece 150 mm in diameter discharges water under a head of 3 m. Determine the…

Q: The simply supported beam is used to supports loads and moment as shown below. Draw shear and moment…

Q: The following creep data were taken on an aluminum alloy at 480 C (900 F) and a constant stress of…

A: Given: Time (min) Strain 0 0 2 0.22 4 0.34 6 0.41 8 0.48 10 0.55 12 0.62 14 0.68…

Q: A strong magnet repulses one another with a variable force that can be approximated by the equation…

A: GivenF=-lny10 kNy1=5mm to y2=1mm

Q: A wooden plank x meters long has one end leaning on top of a vertical wall 1.5 m long and the other…

A: Given Data The lenght of the vertical wall is:L=1.5m The force is:F=100 N The weight of block…

Q: A wooden plank x meters long has one end leaning on top of a vertical wall 1.5 m long and the other…

A: Given data Length of wooden plank = x m The height of vertical wall = 1.5 m 100 N is required to…

Q: a. Total heat added b. Total turbine work C. Heat rejected in the condenser d. Total pump work e.…

A: IN THIS PROBLEM USE STEAM POWER CYCLE WITH THE BOILER PRESSURE OF 10MPA . AND THE TEMPRETURE OF THE…

Q: a 20 mm diameter steel pipe is used to drain and oil tank (SG-0.88) as shown. The total head loss is…

Q: Suppose a point satisfies sufficiency conditions for a local minimum. How do you establish that it…

A: Given: That a point on a curve has the local minima. Suppose the curve is →y=fx And here assume that…

Q: Draw and explain four strokes of Otto cycle based internal combustion engine. Also label various…

Q: 6 The Geneva wheel is a mechanism for producing in- termittent rotation. Pin P in the integral unit…

Q: Using appropriate sketches, draw a two-stage refrigeration system with a flash chamber. Explain…

A: Two stage refrigeration system means two stage compression refrigeration system.

Q: A turbine of 9000 B.H.P. is working under a head of 25 m and runs at 100 R.P.M.- What will be the…

Q: 9.5 m 9.5 m 9.5 m The two configurations above both have a wall thickness of 550 mm, and a length of…

A: Given, The side of square cross-section or diameter of circular cross-section, d = x = 9.5 m The…

Question

Answer q1

Homework 3
01
A reciprocating compressor cómpresses 1 m³/min of gas from 1 bar to 5 bar. The clearance is 8% and
the isentropic compression index is 1.4. Determine the percentage increase in compression work if the
re-expansion index is 1.1 instead of 1.4.
[Ans. 7.3 % 1
Q2

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

10 m3 /min of free air is to be compressed to 8 bar gauge in two stages. Assuming an intercooler pressure of 2 bar gauge and polytropic index of 1.3, what is the power consumption of the first stage compressor ? pls choose one a.20.44 KW b.48.8 HP c.22.4 litre/mole d.42.2 bar-m3/min e.25.12 KW
With a flow rate of 50 kmol/hour, air is compressed from P 1 = 1.2 bar pressure to P 2 = 6 bar pressure. The power required for this process is 98.8 kW. Temperature and speed data are given below. T1 = 300 K ,T 2 = 520 K ,v1 = 10 m/s, v2 = 3.5 m/s What is the heat rate transferred to the compressor (kJ/s)? Assume that air has Cp = (7/2)R and enthalpy is independent of pressure. (Gpt/Ai wrong ans not allowed)
Air as an ideal gas with y= 1.4 undergoes a normal shock. The upstream conditions are p = 0.5 bar, T 280 K and M = 1.8 the pressure py' will be - a) 1.6 bar b ) 1.7 bar c) 1.8 bar d 1.9 bar
8.. Nitrogen gas is compressed . Pressure rises from 100 kPa to 1500 kPa. Initial temperature of 25 deg C. The required mass flow is 1000 kg/hr. Would you recommend single stage or multi-stage compression? Justify your recommendation with appropriate calculations. For Nitrogen, R = 0.297 kJ/ kg K, g = 1.4, r = 1.25kg/m3, µ = 17.4 µPa s, cp = 1.039 kJ/kg K
8Air enters the diffuser of a ramjet engine (schematic shown below) at 6 lbf/in.2, 420°R, with a velocity of 1800 ft/s, and decelerates essentially to zero velocity. After combustion, the gases reach a temperature of 2000°R before being discharged through the nozzle at 6 lbf/in.2 On the basis of an air-standard analysis, determine:(a) the pressure at the diffuser exit, in lbf/in.2(b) the velocity at the nozzle exit, in ft/s.Neglect kinetic energy except at the diffuser inlet and the nozzle exit. Assume combustion occurs at constant pressure and flow through the diffuser and nozzle is isentropic.
In an axial flow compressor of Boeing 777 Turbofan engine, air enters ambient conditions 17 C and 1 bar. The axial velocity of air is 180 m/s (constant throughout the stage), the rotor speed of 200 m/s, the absolute velocity at the inlet is 185 m/s, the work done factor is 0.95, and the degree of reaction is 50%. If the stage efficiency is 0.86, calculate the air angles at the rotor inlet and outlet, the static temperature at the inlet of the first stage, and stage pressure ratio. *
55 kmol per hour of air is compressed from P1 = 1 bar to P2 = 6.1 bar in a steady flow compressor. Delivered mechanical power is 98.9 kW. Temperatures and velocities are: T1 = 301K T2 = 520 K, u1 = 10.8 m/s and u2 = 3.8 m/s. Estimate the rate of heat transfer from the compressor in kW, 3 decimal values. Assume that Cp = 7/2R and that enthalpy is independent of pressure.
Air passes through a narrow section during horizontal flow. The initial air temperature is 21 [℃], flow rate 91.5 [m / s], pressure 10.56 [Kg / cm2 abs], later flow rate 152 [m/s], pressure 7.05 [Kg/cm2. abs], what is the temperature of the air at the outlet if there is no outside or heat coming in? The average specific heat of air is 7 [kcal / kg mol. ℃] and calculate as an ideal gas.
A four-stage compressor works between limits of 1 bar and 120 bar. The indexof compression in each stage is 1.25, the temperature at the start ofcompression in each stage is 30 ˚C, and the intermediate pressure areselected such that work is divided equally among the stages. If the clearanceis negligible: Calculate: 1. the volume of free air delivered per kilowatt-hour at 1.013 bar and 20 ˚C2. isothermal work input 3. isothermal efficiency.
Ht.7. An ideal gas , Cp=(5/2)R and Cv=(3/2)R, is changed from (P1=1 bar and V1t= 10m3) to (P2=10bar and V2t=1m3) by the following mechanically reversible processes: a. Isothermal compression
Air gas expands isentropically through a converging nozzle from a large tank at 150 lbf/in2, 600°R, and discharges into a region at 50 lbf/in2. The exit flow area is 1 in2. For air, use Cp = 0.24 Btu/lb.R. Determine the pressure at the exit, in lbf/in2.
A steady flow adiabatic turbine accepts gas at conditions T1 = 496K, P1 = 6 bar, T2 = 394 K and P2 = 1.4 bar, Cp = 7/2 R. Assuming ideal gases, determine per mole of gas SG in kJ/K. Assume temperature of the surroundings = 300K