Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

1) A low pressure air compressor develops a pressure of 0.147 bars. If the initial and final states of air are p1 = 1.02 bar, T1 = 300 k and T2 = 315 K. Compute the compressor and the infinitesimal stage efficiency. Another compressor changes the state of air from p1 = 1.02 bar, T1 = 300 K to p2 = 2.5 bars with an efficiency of 75%. Find the infinitesimal efficiency of this compressor.

2) With velocity triangles for R<1, deduce an equation for axial fan stage with downstream guide vanes.

3) A centrifugal blower with a radial impeller generates a pressure equivalent to 100 cm column of water. The temperature and pressure at its entry are 0.98 bars and 310 K. The electric motor driving the blower runs at 3000 rpm. The efficiencies of the fan and drive are 82% and 88% respectively. The radial velocity remains constant and has a value of 0.2u2. The velocity at the inlet eye is 0.4u2. If the blower handles 200 m3 entry Conditions, compute

a) Power needed by the electric motor.

b) Impeller diameter.

c) Inner diameter of blade ring.

d) Air angle at entry.

e) Impeller widths and at entry and exit.

4) The initial pressure and temperature of steam entering a multistage turbine are 10 Mpa and 773K respectively. The steam flow rate is 100 kg/s and exit angle of the first stage nozzle blade is 70°, diameter 0.1m and speed 3000 rpm. Assuming maximum/min of air at the utilization factor, determine the rotor blade angles, blade heights, power developed and the final state of steam after expansion for the two stage Curtis wheel ηst=0.65.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M913500

Have any Question? 


Related Questions in Mechanical Engineering

1 a slender vertical bar ab with pinned ends and length l

1. A slender vertical bar AB with pinned ends and length L is held between immovable supports. What increase ?T in the temperature of the bar will produce buckling? 2. A W2 × 87 structural steel column has a length of 12 ...

It is desired to use a 075-m diameter beach ball to stop a

It is desired to use a 0.75-m diameter beach ball to stop a drain in a swimming pool. Obtain an expression that relates the drain diameter D and the minimum water depth h for which the ball will remain in place.

The vibrational constant for the non-degenerate inversion

The vibrational constant for the (non-degenerate) inversion or "umbrella" motion of NH3 is 950cm-1 . Calculate the percentage of NH3 molecules in a sample at 373 K that will be in the v = 1 state of the inversion mode.

I need a proposal project for surface metrology asap i need

I need a proposal project for Surface Metrology ASAP. I need two documents: 1. Project outlines Proposal outlines (the instruction & template is in the attached Proposal for the project) should be 1 page 2. Final project ...

Sketch a joint diagram for a joint in the preloaded

Sketch a joint diagram for a joint in the preloaded condition, before an external load is applied to the joint. Assume that KJ = 5 KB ? We apply 43 ft-lbs of torque to a 3=8-28 2 J429, GR 8 bolt. We believe that the nut ...

1 the following data define the sea-level concentration of

1) The following data define the sea-level concentration of dissolved oxygen for fresh water as a function of temperature: T 0 8 16 24 32 40 01F 14.64 11.85 9.87 8.41 7.30 6.43 Use MATLAB to fit the data with (a) piecess ...

Problem -a consider a one-component system consisting of

Problem - a. Consider a one-component system consisting of spherical bubbles of vapor inside a liquid, which is commonly observed as a liquid begins to boil. This is similar to the case considered in class in which liqui ...

-cited references at least 2-typed report min 2 pages-what

-cited references at least 2 -typed report min 2 pages -what has to happend to get into closed loop mode -what sensors are needed for closed loop mode -explain both theories fully

Projectdesign a tube bank that will increase the

Project Design a tube bank that will increase the temperature of a 1200 CFM flow of air from 35°F to 100°F. Assume a constant pressure of 1atm. Each tube will have a diameter of 0.5in and a length of 24in. The tube confi ...

In order to maneuver a large ship while docking pumps are

In order to maneuver a large ship while docking, pumps are used to issue a jet of water perpendicular to the bow of the ship as shown in the figure. The pump inlet is located far enough away from the outlet that the inle ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen