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Types on working pressure.
COMPRESSED AIR
COMPRESSOR TYPES.
1. According to the working principle… a) Reciprocating and b) Rotary-screw
2. According to the cooling system….. a) Water cooled and b) Air Cooled
3. According to the oil with delivery air……
a) Oil free lubrication b) Oil Lubrication
4. According to the Cylinder position ……
a) Horizontal in line b) PET-Star c) L-Shaped
1. IR ( LP & HP Air) 2. ELGI ( LP)3. ABC ( HP)4. AF ( HP)
COMPRESSOR BRAND
LP AIR PRODUCTION
New two elgi = 10.5 x 2 = 21 M3/min ( 25.04.15)
HP AIR PRODUCTION
SL #
Compressor Model CFM M3/Min Motor, KW
Section
1 IR PS3-1510C 882 25 270 RJM-10
2 IR Pet PET Star* 310 168.80 4.78 55 2 Ltr Bottle
3 ABC 4HA-6-TER -LT 882 25 280 SBO-14 HR
4 AF -1(HF) 5 LA 882 25 250/300 SBO-14
5 AF-2(PCL) CE46XS 442 12.5 132 Jar Blowing
TOTAL 3256.8 92.28 987/1037
AIR REQUIREMENT CALCULATION
FUTURE LP AIR DEMAND
PRODUCTION VS DEMAND
POWER FOR AIR
SL# AIR PRODUCTION TYPE POWER,KW TOTAL, KW
1 LP AIR 315
1482 2 MP AIR 185
3 HP AIR 982
Air Quality
Air should be free from fine particles, water vapor and oil. Usually oil free air is best air quality.
Air quality depends on non-lubricated compressor , filtered air intake and compressor design.
Air Quality Standard
ISO 8573-1 : 1991 Oil free air by high efficiency filters. Defined class 1 to 6.
ISO 8573-1 : 2010 Oil free air by high efficiency filters. Defined class 0 to X .
Filters1.Intake filter 5 microns2.Two high efficiency filters’…. a) Pre-filter b) Post filter/Fine filter
Compressed Air Quality & Production Selection.The international standard for compressed air quality provides a simple system of classification for the three main contaminants present in any compressed air system – DIRT, WATER and OIL. To specify the quality class required for particular application, simply list the class for each contaminant in turn
Compressed Air Quality ISO 8573-1: 1991
ClassSolid Particle
Maximum number of particles per m3
Water Pressure Dew
point° C
Oil(incl. vapor)
Mg/m3
0.1-0.5micron 0.5-1.0micron 1.0-5.0micron
1 100 1 0 -70 0.01
2 10,000 1,000 10 -40 0.1
3 - 10,000 500 -20 1
4 - - 1,000 3 5
5 - - 20,000 7 -
6 - - - 10 -
Classes ISO
8573- 1:2010
Particles Water Oil
Number of particles per m3 Concentration
mg/m3
PDP °C
Liquid g/m3
Aerosol mg/m3
0.1- 0.5gm 0.5- 01 gm 1- 5gm
0 Stronger than class “1”, according specification of manufacturer / user
12345
≤ 20000≤400000
≤ 400≤ 6000
≤ 90000
≤ 10≤ 100
≤ 1000≤ 10000
≤ 100000
≤ -70≤ -40
≤ - 20≤ + 3≤ + 7
0,010,1
15
6789X
≤ 55-10
> 10
≤ +10 ≤ 0,50,5-55-10> 10 > 10
Technically oil free air solution.
ISO 8573-1: 2010 Table
OTHERS STANDARDS
BRC Global Standard for FoodSafety,Codex
Alimentarius-CAC/RCP1,EHEDGDoc.23(2nd
Edition)Part1,ISO85731-- 5and7,‐ISO22000 Foodsafetymanagementsystems
and
ISO-TS-22002-- 1.‐
British Compressed Air Society
BCAS Food and Beverage Grade Compressed Air Best Practice Guideline 102
ISO 8573-1: 2010 Purity Class
Particles Water OIl
By particle Size (maximum no of particle per m3)
Vapor Pressure Dew Point
Aerosol & Vapor
0.1-0.5 micron
0.5-1.0 micron
1.0-5.0 micron
Deg C Deg F mg/m3
Direct Contact2:2:1
400,000 6000 100 ≤-40 ≤ -40 ≤ 0.01
Indirect Contact2:4:2
400,000 6000 100 ≤ +3 ≤ + 37 ≤ 0.1
Microbial Contaminants
Hazard analysis shall establish the risk of contamination by microbiological contaminants from compressed air. Refer to ISO 8573-7
TO Meet ISO 8573-1 What should we do?
Filter selection
Brand Precede Post
Filter grade Size Filter Grade Size
IR Grade GP < 0.5 ppm Grade HE < 0.01 ppm
Grade HE < 0.01 ppm Grade AC < 0.003 ppm
Grade DP Intake air filter, 1 micron.
ELGI FT (P)120 < 0.5 ppm FT (S)120 < 0.01 ppm
Filter
Air Drying System
Moisture separator – Auto Drain Valves – Pre-filter--- Air Dryer ---- Fine Filter.
Air Filter selection: Flow rate, inlet size and pressure have to match properly. Minimum pressure drop.
Quickest , simplest maintenance design. 4. Built in safety protection. 5.Lowest pressure drop 6.Corrosion resistant alocrom treatment.
40 BAR VALVE OPERATION
Compressor Oil
Lubricant Chart
