air compresser of elements of mechanical engineering

1. PRESENTED BY:
AKHILESH KUSHWAHA(16CMP021)
TINKAL PATEL(16COMP022)
JAY RAMI(16COMP023)
AIR
COMPRESSOR

2. *RECIPROCATING COMPRESSOR
*ROTATORY COMPRESSOR
*DYNAMIC
1.CENTRIFUGAL COMPRESSOR
2.AXIAL FLOW COMPRESSOR
*POSITIVE DISPLACEMENT
1.ROOTS BLOWER
2.VANE TYPE BLOWER
3.SCREW BLOWER OR COMPRESSOR

3. THIS TYPE OF COMPRESSOR USES PISTON-CYLINDER
ARRANGEMENT TO COMPRESS THE AIR.WHENEVER
SOMETHING MOVES BACK AND FORTH IT IS CONSIDERED
AS MOVING IN RECIPROCATING MOTION.
SIMILARLY IN THIS TYPE PISTON MOVE BACK AND FORTH
INSIDE THE CYLINDER AND COMPRESS THE AIR.THERE
ARE TWO SETS OF VALVES THAT TAKE CARE OF AIR
INTAKE AND EXHAUST AS SHOWN IN FIG

4. ROTATORY COMPRESSOR

5. CENTRIFUGAL COMPRESSORS, SOMETIMES
TERMED RADIAL COMPRESSORS, ARE A SUB-
CLASS OF DYNAMIC AXISYMMETRIC WORK-
ABSORBING TURBOMACHINERY. THE IDEALIZED
COMPRESSIVE DYNAMIC TURBO-MACHINE
ACHIEVES A PRESSURE RISE BY ADDING KINETIC
ENERGY/VELOCITY TO A CONTINUOUS FLOW OF
FLUID THROUGH THE ROTOR OR IMPELLER.

7. THE ROOTS TYPE BLOWER IS A POSITIVE DISPLACEMENT
LOBE PUMP WHICH OPERATES BY PUMPING AFLUID WITH A PAIR OF
MESHING LOBES NOT UNLIKE A SET OF STRETCHED GEARS. FLUID
IS TRAPPED IN POCKETS SURROUNDING THE LOBES AND CARRIED
FROM THE INTAKE SIDE TO THE EXHAUST. THE MOST COMMON
APPLICATION OF THE ROOTS TYPE BLOWER HAS BEEN AS THE
INDUCTION DEVICE ON TWO-STROKE DIESEL ENGINES, SUCH AS
THOSE PRODUCED BY DETROIT DIESEL AND
ELECTRO-MOTIVE DIESEL.

8. A ROTARY VANE PUMP IS A POSITIVE-DISPLACEMENT PUMP THAT
CONSISTS OF VANES MOUNTED TO A ROTOR THAT ROTATES INSIDE
OF A CAVITY. IN SOME CASES THESE VANES CAN HAVE VARIABLE
LENGTH AND/OR BE TENSIONED TO MAINTAIN CONTACT WITH THE
WALLS AS THE PUMP ROTATES. IT WAS INVENTED BY CHARLES C.
BARNES OF SACKVILLE, NEW BRUNSWICK, WHO PATENTED IT ON
JUNE 16, 1874.[1][2]
THERE HAVE BEEN VARIOUS IMPROVEMENTS,
INCLUDING A VARIABLE VANE PUMP FOR GASES

9. A ROTARY-SCREW COMPRESSOR IS A TYPE OF
GAS COMPRESSOR THAT USES A ROTARY-TYPE POSITIVE-
DISPLACEMENT MECHANISM. THEY ARE COMMONLY USED
TO REPLACE PISTON COMPRESSORS WHERE LARGE
VOLUMES OF HIGH-PRESSURE AIR ARE NEEDED, EITHER
FOR LARGE INDUSTRIAL APPLICATIONS OR TO OPERATE
HIGH-POWER AIR TOOLS SUCH AS JACKHAMMERS.

10. 1.http
://aermech.com/reciprocating-compressors-and-typesworking-princi
/
2.https://
upload.wikimedia.org/wikipedia/commons/e/ec/Gas-compressors-ty
3. https://en.wikipedia.org/wiki/Centrifugal_compressor
4. http://images.slideplayer.com/26/8403558/slides/slide_13.jpg
5. https://en.wikipedia.org/wiki/Roots-type_supercharger
6. https://en.wikipedia.org/wiki/Rotary_vane_pump
7. https://en.wikipedia.org/wiki/Rotary-screw_compressor