Dear prash1820

0.504 kg/sec equals 0.504 * 1.2 = 0.6048 m3/sec

is 605 lts/sec

is 36.29 m3/min

is 2177 m3/hr

Intake pressure 1.025 bar(absolute)

Outlet pressure = 10.2 bar(absolute)

Pressure rise = 9.15 bar

From the link :

http://productpagesct.atlascopco.com...=ZZ&Category=1

you can select an Atlas Copco compressor:

GA 315-VSD-10

710 ltrs/sec

10 bar

290 kW

For the outlet temperature, you can select an air cool dryer.

Easy as that

It is an oil screw compressor with after cooling and of course an oil separator.

For an oil free compressor you will need a multi stage setup. (also possible)

success ■

Dear prash1820,

The thermo dynamic calculation should be with a compression exponent close to isothermic (internal cooling by the oil) plus auxiliary power requirements.

As this is common practice for compressor manufacturers, it is best and the easiest way to leave those precise calculations to them.

Keep in mind that there are more suppliers, but they all have to obey the same rules of physics.

take care

teus ■

Hello,

as usual Teus has made great suggestions. Please find attached a line up of standard oil free compressors that may be of help in your design phase. The options of so called "plant air" type 7-10BarG compressors is overwhelming, e.g. Boge and many, many more. Pick one you trust and that can supply this level of technical know how and ask them for the engineering details.

Attachments

v1-016-01-en delta twin (PDF)

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Dear Sir,

would that be 450C or F? Either way, if you chose an oil free compressor you could eliminate the after cooler which would render an outlet temp of 200-250C and you would reduce the amount of heat you would have to introduce to your air stream. ■

Originally Posted by Teus Tuinenburg

Dear prash1820,

The thermo dynamic calculation should be with a compression exponent close to isothermic (internal cooling by the oil) plus auxiliary power requirements.

As this is common practice for compressor manufacturers, it is best and the easiest way to leave those precise calculations to them.

Keep in mind that there are more suppliers, but they all have to obey the same rules of physics.

take care

teus

SIR

i want to know the relation between built in volume ratio and specific power for a screw compressor.

im doing a project on 5/6 dry crew compressor ad is planning to optimise the built in volume ratio

Photo added by Administrator as an example only:

KAESER screw blower ■

A screw compressor is operating at the highest possible energetic efficiency when the outlet pressure matches the internal compression ratio.

(actual compression ratio = internal compression ratio)

The screw compressor compresses then adiabatically.

When the screw compressor is operating at a higher or lower actual compression ratio, the compression diagram is then completed with a isochoric compression or expansion section, causing a lower energetic compression efficiency.

The internal compression ratio can (only) be lowered by enlarging the outlet opening, which is a job for the manufacturer.

The operating process conditions (mainly the average pressure) have a great influence on the overall energy consumption.

Have a nice day ■