Compressor characteristics, Other Engineering

Assignment Help:

Compressor characteristics:

When a compressor is designed it is essential to establish the points at which it is likely to surge. Tests are carried out to determine the relationship between pressure ratio and mass flow at speeds covering the whole working range of the compressor. The results are recorded on a series of curves known as surge lines. To obtain the curves, the compressor is run at a constant speed, the mass airflow is gradually decreased and during this test the pressure ratio is carefully monitored. As the mass airflow reduces, there is an increase in pressure ratio. Eventually the compressor airflow becomes turbulent and the compressor surges. When this occurs, there is a rapid drop in pressure. The tests are carried out at various speeds until the whole working range of the compressor has been covered. During the test the points at which turbulence occurred at the various speeds are plotted. The points are then connected by drawing a line, this line is the surge line of the particular compressor being tested. During normal operation the engine is never allowed to operate beyond the surge line. A safety margin is established and the fuel and airflow control systems are adjusted so the engine will run within the safe limits. Figure 4.15 refers.

2095_COMPRESSOR CHARACTERISTICS.png


Related Discussions:- Compressor characteristics

electronics and communication, I want to join.Please help me in completing...

I want to join.Please help me in completing the process

Assignment, all about pepsi company symbol PEP 1. What is the name of the ...

all about pepsi company symbol PEP 1. What is the name of the company? What is the industry sector? 2. What are the operating risks of the company? 3. What is the financial risk

Software engineering, analyse modelling for safe home security system

analyse modelling for safe home security system

Grain boundary, Q.  Describe the structure of grain boundary. Ans. O...

Q.  Describe the structure of grain boundary. Ans. One phase of metal contains many grains of various orientation, the individual crystals are called grains. Thus a grain is

Signal conditioning amplifier, Signal conditioning amplifier The primar...

Signal conditioning amplifier The primary function of the signal conditioning amplifier is to match the output signal range of the transducer to the input signal range of the a

Compressibility fluid -aircraft maintenance, Compressibility Fluid: Com...

Compressibility Fluid: Compressible fluid flow refers to the air flow through a gas turbine engine and, because the air is compressible, flow at subsonic speeds causes a change

Cash flows, Your company is considering a machine that will cost $6,287 at ...

Your company is considering a machine that will cost $6,287 at Time 0 and which can be sold after 3 years for $790. To operate the machine, $886 must be invested at Time 0 in inven

Dsp, relationship between z plane and s plane in bilinear transformation me...

relationship between z plane and s plane in bilinear transformation method

Propeller shafts, PROPELLER SHAFTS Most modern engines, both reciprocat...

PROPELLER SHAFTS Most modern engines, both reciprocating and turbine, have flanged propeller shafts. Some of these flanges have integral internally threaded bushings that fit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd