Air Purification

Comfonomics Design Custom Solutions

We Design Custom Solutions for specific needs of your application for removal of Solid , Gases pollutants , and air borne disease causing living organisms.

Different industries require ail filtration and purification to suit their specific needs and we provide the combination of solid, gases filtration and sterilisation as required.

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Air suspended solid particles are detrimental to both human life and industrial machinery. It also interferes with the quality of the product or process in manufacturing. Thus it is critical to provide air cleaned of all such solid pollutants in air like dust, dirt, smoke, mist, fumes, pollens, etc 

To provide the requisite filtration capacity, study of air changes per hour, source and generation of pollutant is done and diagnosed and combination of Fine, HEPA, ULPA filters are selected based of MERV/ASHRAE or EU (EN1822-1:2009) Classification 

European Standards for HEPA and ULPA

S.No

Classification

Filter type

Percentage Efficiency at MPPS

1

E10

HEPA

≥85

2

E11

HEPA

≥95

3

E12

HEPA

≥99.5

4

H13

HEPA

≥99.95

5

H14

HEPA

≥99.995

6

U15

ULPA

≥99.9995

7

U16

ULPA

≥99.99995

8

U17

ULPA

≥99.999995

MERV Ratings

S.No

MERV Rating

Efficiency for smaller Particles

Efficiency for Larger Particles

Particulates best used for

Filter type

1

1-4

<20%

65-80%

Pollen, Dust, sanding dust, bigger than 10 microns

Residential A/C units, throwaway filters

2

5-8

20-30%

80-95%

mold spores, cement dust

Better Residential filters, commercial building filters, pleated filters for industrial settings

3

9-12

40-75%

90-95%

milled flour, welding fumes

better commercial building filters, hospital laboratories

4

13-16

89-95%

>98%

Bacteria, Smoke

ASHRAE Filters, Hospital inpatient care, smokers laungers, general surgery areas

5

17-19

99.97%

Combustion smoke, pharmaceutical manufacturing, viruses or radioactive material.

HEPA filters

6

20

100.00%

Clean room

ULPA filters

With growing focus on human health, manufacturing process and end product quality, Solid phase filtration now finds use in almost all commercial and industrial activity

Some prevalent Industrial application for solid phase filtration are 

  1. Blasting
  2. Chemical Production
  3. Food Processing
  4. Powder Coating
  5. Mining

Unwanted gases in commercial and industrial facilities act as contaminants which deteriorates human health and sensitive equipments. Gases like sulfur oxides, hydrocarbons, formaldehyde, organic acids, hydrogen sulfide, nitric oxide, VOC’s, etc lead to corrosive environment, bad odour, harmful breathing space.

Major Industries which require Gas Phase filtration 

  1. Data Centres / Server Rooms
  2. Electronic Industries
  3. Food Processing / Cold Storage
  4. Chemical Production
  5. Waste Management Industries

Data centres, Server Rooms, Electronic Industries are at very high risk as the electronic parts are highly susceptible to the presence of corrosive gases in the environment and the same needs to be managed to increase the reliability and durability of Electronic Parts of machineries 

Food Processing and Cold Storage industry generate organic gaseous compounds which can interfere with the food storage or processing leading to bad food quality or early ripening. Hence, removal of such gases from the environment is imperative to prevent the same.

Waste Management and Chemical production generates mixture of gases which are harmful to workers and also corrode the machines and affect their functioning. 

For specific applications study of gases present in the environment is done , their source and generation identified and interaction of various gases simulated. Depending on the findings chemical filter media comprising granular media in thin or deep bed form or honeycomb media in cartridge form taken. Selection of activated alumina , activated carbon , potassium permanganate (KMnO4), phosphoric acid (H3PO4) and potassium hydroxide (KOH) as filtration compound is done as per the presence of corrosive gases in the environment

Gas phase filter media selections are based on ANSI/ISA S71.04 Classification

Class

Severity Level

Cu/Ag Reactivity Rate/Month

Comments

G1

Mild

<300 A°=Cu <200 A°=Ag

An environment sufficiently well-controlled such that corrosion is not a factor in determining equipment reliability.

G2

Moderate

<1000 A. °

An environment in which the effects of corrosion are measurable and corrosion may be a factor in determining equipment reliability

G3

Harsh

<2000 A. °

An environment in which only specially designed and packaged equipment would be expected to survive. Specifications for equipment in this class are a matter of negotiation between user and supplier.

GX

Severe

>2000 A. °

An environment in which there is a high probability that corrosive attack will occur. These harsh levels should prompt further evaluation resulting in environmental controls or specially designed and packaged equipment.

a series of guidelines and standards issued by IUVA to foster the development of effective and reliable air treatment systems intended to control or improve the aerobiological quality of indoor environments via the reduction of airborne microbial contamination. 

Air disinfection systems are any filtering and disinfection systems used to treat indoor air and reduce or aid in reducing indoor airborne levels of microbes, especially viruses, bacteria, fungi, spores

AIR STERILISATION – AIR FREE FROM BACTERIA / FUNGI / OTHER DISEASE CAUSING ORGANISMS

Airborne microbial contamination affects the aerobiological quality of  the indoor environment. This has direct implication on human health and production of food and pharmaceuticals.

Different bacteria , viruses, fungi present in air can contaminate the entire batch of food and pharmaceutical production and pose various types of hazards for humans 

It is imperative to disinfect the air of such air borne microbes to provide a sterilised environment. Air Disinfection is widely used in 

  1. Food Processing 
  2. Pharmaceuticals Production
  3. Hospitals
  4. Cold Storage 
  5. Commercial buildings

UVGI (Ultra Violet Germicidal Irradiation) Systems are designed considering the air volume to be sterilised, the required disinfection rates of airborne microbes, and other environmental and site conditions. 

The UVGI system is designed to confirm to the IUVA (International Ultraviolet Association) Guidelines – IUVA-G01A-2005 and the UV lamps are selected as per IESNA (Illuminating Engineering Society of North America) Rating. Depending on the Dose of inactivation required URV Rating of 1-20 is selected. 

UVGI Rating values and Typical Inactivation rates (IR)

URV

UV dose J/m²

Anthrax IR, %

Influenza IR, %

Smallpox IR, %

TB             IR, %

1

0.01

0

0

0

0

2

0.1

0

1

2

2

3

0.2

0

2

3

4

4

0.3

0

3

4

6

5

0.5

1

6

7

10

6

0.75

1

9

11

15

7

1

2

11

14

19

8

1.5

2

16

20

27

9

2.5

4

26

32

41

10

5

8

45

53

66

11

10

15

69

78

88

12

15

22

83

90

96

13

20

28

91

95

99

14

30

39

97

99

100

15

40

49

99

100

100

16

50

57

100

100

100

17

60

63

100

100

100

18

80

74

100

100

100

19

100

81

100

100

100

20

200

96

100

100

100

UV Rate Constant

 k, m²/J

0.0167

0.1187

0.1528

0.2132

Air Purification Works

Hydro Plant - Kolkata
Hydro Plant - Kolkata
Hydro Plant - Kolkata
Hydro Plant - Kolkata
Hydro Plant - Kolkata
Hydro Plant - Kolkata