Pneumatics I

Question 1

is the most widely used
compressor. It can be used both pressure requirement from low
to high pressure.

Answer 1

Reciprocating Piston Compressor

Question 2

is a compressor with rotating pistons
and at the same time, chambers are compacted and compressed.

Answer 2

Rotary Piston Compressor

Question 3

these compressor works in air flow principle
and are especially suitable for large delivery volume.
Examples: Axial
flow and radial flow

Answer 3

3. Flow Compressor

Question 4

Delivery Volume: 150
2,000 cubic meter/hr
Pressure Range: 0.15
8 Bars

Answer 4

Rotary Compressor

Question 5

Delivery Volume: 800
50,000 cubic meter/hr
Pressure Range: 0.8
25 Bars

Answer 5

Screw Compressor

Question 6

Delivery Volume: 80
25,000 cubic meter/hr
Pressure Range: 1
1000 Bars

Answer 6

3. Piston Compressor

Question 7

Delivery Volume: 300
200,000 cubic meter/hr
Pressure Range: 5
300 Bars

Answer 7

Turbo Compressor

Question 8

the compressed air is forced through a drying agent such s
dehydrated chalk or magnesium chloride which remains in solid form, lithium chloride or calcium chloride which reacts with the moisture to forma solution which is drained from the bottom of the vessel. The drying agent must be replenished at regular intervals as the dew point increases.

Answer 8

Absorption (deliquescent) Drying

Question 9

a chemical such as selica gel or activated alumina in granular
form is contained in a vertical chamber to physically absorb
moisture from the compressed air passing through it. When the drying agent becomes saturated, it is regenerated by drying, heating or by flow of previously dried air.

Answer 9

Adsorption (dessicant) Drying

Question 10

is a mechanical unit incorporating a refrigeration circuit, and two heat exchangers. Humid high temperature air is pre cooled in the first heat exchanger by transferring part of its heat to the cooled output air.

Answer 10

Refrigerant (Low
temperature) Drying

Question 11

Two Types of Pipeline Installation (Main)

Answer 11

Dead end Line and 2. Ring Main Line

Question 12

it can be a black or galvanized form which is
less liable to corrode.

Answer 12

Standard Gas Pipe

Question 13

primarily used when very large diameters in
long straight main lines are required.

Answer 13

Stainless Steel Pipe

Question 14

this is used where corrosion, heat resistance and
high rigidity are required.

Answer 14

Copper Tube

Question 15

rubber hose or re enforced plastic. It is most
suitable for air actuated hard tools as it offers flexibility for
freedom of movement for the operator.

Answer 15

Rubber Tube

Question 16

it is commonly used for the interconnection of pneumatic components. Within its working temperature limitations it has obvious advantages for installation, allowing easy cutting to length and rapid connection by either compression or quick fit fittings.

Answer 16

5. PVC or Nylon Plastic Tubing

Question 17

provide a reliable retaining force inside and outside of
the tube. The tube is pressed by the sleeve when screwing in the cap nut. The tube entering into the tube and thus represents a considerable extra flow resistance.

Answer 17

Insert

Question 18

has a large retaining force and the use of a special
profile seal ensures positive sealing for pressure and vacuum.

Answer 18

Push in

Question 19

it has a built in mechanism so that air does not
exhaust after removal of the tube and is also applicable for
copper free applications.

Answer 19

3. Self
   sealing