DCI (Delhi Chapter of ISHRAE)Indian Society of Heating Refrigerating & Air Conditioning Engineers

Vol : IV Issue : 2 Edition : Oct 2012 Editor : Shami Bhardwaj

Presidential Twitter

ISHRAE Institute of Excellence IIE Delhi organised two workshops in Delhi and Pune

Dear Friends,

Welcome to second edition of Twitter for

this Society year 2012-13 of DCI

(covering the period of July-Sep). Our Half

yearly performance has more or less been

on course with immense support from all

Office bearers, CWC and Extended

Committee members’ whole hearted

support. Some of the stand out activities undertaken during this

period are listed below :

• Student Activities in GB Pant & School of Planning and

Architecture

• K-12 Activity at Happy Model Public School

• DCI-IIE Workshops

o Fundamentals of applied Physchometry

o Duct Design & Air Distribution

o Building Information Modeling

o Integration of DG Set Security Fire Alarm and other

Building Services Ingreated BMS System

• Product Presentations

o Systemair – By Mr. Richard Bietmirza

o Sevcon-LTI – By Mr. Gaurav Vasudev

• Annual General Meeting was held with Audited Accounts of

previous financial year adopted and Nomination Committee

for next Society year was approved by members. ETA and

Schnieder made Corporate presentation of their respective

conglomerates.

• IIE/DCI entered into an agreement with CAD Studio to

undertake 40 hours 7 day course on Revit MEP training

course

This edition of Twitter covers an important topic of Commercial

Kitchen Ventilation. An adequately designed kitchen ventilation

system should achieve the following objectives.

• Remove cooking fumes at the source, i.e. as near to the

cooking equipment as possible.

• Remove excess hot air and introduce incoming cool clean

air so that a comfortable environment is achieved.

Inadequate ventilation can cause stress, contributing to

unsafe systems of work and high staff turnover.

• Ensure that the air movement in the kitchen does not cause

discomfort.

• Provide sufficient air for complete combustion at fired

appliances, and prevent the risk of carbon monoxide

accumulating.

• Be easy to clean, avoiding the build-up of fat residues and

blocked air inlets which lead to loss of efficiency and

increase risk of fire.

• Be quiet and vibration free.

With Season's Greetings and Best

Wishes for a very Happy New Year,

from the Twitter team.

Sunil Kher

President (2012-2013)

Workshop on BIMIt gives us immense pleasure to inform the readers

that under the patronage of Mr. Sunil Kher, a

workshop on BIM (Building Information Modeling)

was successfully conducted on 15th September’

2012 at India International Center, New Delhi.

Building Information Modeling (BIM) or Virtual

Design & Construction (VDC), as the name

suggests, is enabling the developers and other

stakeholders to reap the benefits of the technology subject and details presented by the guest speaker Mr. Parveen Sharma and avoid the project delays caused due to poor from M/s Intec Infocom (www.intecinfocom.com) were very informative design coordination. The BIM technology helps in and appreciated by the participants. Mr. Parveen Sharma is an Architect optimizing the designs and integrating with other with Masters Degrees in Computer Science and Computer Applications applications to extract intelligence for all participants (M. Sc & MCA). of a construction project.

The workshop was attended by Mr. Sunil Kher, Mr. Prabhat Goel, Mr. V K The workshop was attended by the participants Seth, Mr. Dhiraj Rastogi & Mr. Sunil Yadav. Mr Dhiraj Rastogi was the from various organizations (DLF, Fortis, Godrej, driving force behind the success of the workshop . Special thanks to Mr. Blue Cost Group, AECOM, Elumatech, etc.). The Sunil Kher and the DCI secretariat for making the workshop a success.

IIE Delhi has started its 14th batch in advance diploma

course in HVAC&R from 7th August 2012. We have very

bright students in the current batch. Companies looking

for qualified trained HVAC Engineers can register with IIE

for placement. For details Pl contact Mr. V K Seth at the

following address :

www.ierfeducation.org;

mail: ierf05@gmail.com; ierf05@airtelmail.in;

1. IIE Delhi organised a workshop

on Duct Design & Air Distribution

by Dr. A K Ahluwalia at INDIA

INTER NATIONAL CENTRE

ANNEXE on 1st September

2012. It was attended by 36

participants from industry. The

workshop was inaugurated by

the President of Delhi Chapter of

ISHRAE, and it was concluded

by Mr. Tejveer Singh, Chief

Engineer DRDO and President of Hyderabad Chapter.

2. IIE also conducted a workshop on Duct Design & Air Distribution for

Bharti Vidyapeeth Deemed University at Pune on 22nd

September. This was a faculty training programme for various

Engineering Colleges organised by Bharti Vidyapeeth. Bharti

Vidyapeeth has shown interest to be associated with IIE Delhi.

3. IIE is planning to conduct a Design Structure Course for industry

Professionals during the winter.

Student Activities

DCI’s student activities team was

ins t rumenta l in spread ing

awareness about the ISHRAE

student chapter and its associated

benefits in ITM College, Gurgaon

and in GB Pant Polytechnic, Delhi.

The student activity chair Mr.

Dhiraj Rastogi & Co-chair Mr.

Sunil Yadav conducted the

ISHRAE presentation at ITM

College, Gurgaon on 30th August,

which was attended by over 60 students. The college faculty advisor

Mr. Joydeep Chakraborty made all efforts to ensure maximum student

participation and making the event successful.

Product presentation on Victaulic Coupling was arranged for the

benefit of students at GB Pant Polytechnic on 3rd September’2012.

The presentation was attended by over 35 students and college

faculty members. The National President Mr. Sushil K Choudhury

graced the event and addressed the gathering. Efforts made by the

faculty advisor Mr. Rajinder Singh, Victaulic RM Mr. Nitin & DCI

Secretary Mr. Vikram ensured the success of the event.

K-12 ActivityDelhi Chapter of ISHRAE organized a K-12 Activity at Happy Model

School, Janak Puri on 23rd August. The activity included a Painting

Competition for students of grade 2nd to 5th. 250 enthusiastic students

participated in the event. Staff & volunteers at the school were very

grateful & apprecitative of ISHRAE’S initiative.Mr Paryushan Jain and

Mr Arvind Kumar from DCI oversaw the event with the kind assistance of

the School principal Mrs Astha. Refreshments were given to all children

at the end of the program alongwith a certificate of participation.

DCI conducted a

p r e s e n t a t i o n o n

T h e r m a l E n e r g y

Storage System& its

bene f i t s on 28 th

September at the

School of Planning &

Archi tecture, New

Delhi.

The presentation was

carried out by Mr. Sunil

Kher and Mr. Ekansh Kshetrapal from M/s SEVCON. The

program was addressed by the National President Mr.

Sushil Choudhury and the DCI President Mr. Sunil Kher.

Also, present were the Student Activity Chair Mr. Dhiraj

Rastogi, DCI Secretariat Mr. Vikram & Mr. Arvind. Efforts

made by the faculty advisor Prof. V K Paul and DCI

secretariat ensured the success of the event.The

presentation was attended by about 50 students and

senior faculty members of the college. The presentation

was very informative and was appreciated by the

participants.

G.B. Pant School of Planning and Architecture

Its our pleasure to inform you that ISHRAE's Delhi

Chapter is now active and kicking on Facebook.

Photographs of past events are uploaded on the website.

We would request you to please like the facebook page:

http://www.facebook.com/IshraeDelhiChapter and tag

yourself and your friends’ photographs.

Presidential Twitter

ISHRAE Institute of Excellence IIE Delhi organised two workshops in Delhi and Pune

Dear Friends,

Welcome to second edition of Twitter for

this Society year 2012-13 of DCI

(covering the period of July-Sep). Our Half

yearly performance has more or less been

on course with immense support from all

Office bearers, CWC and Extended

Committee members’ whole hearted

support. Some of the stand out activities undertaken during this

period are listed below :

• Student Activities in GB Pant & School of Planning and

Architecture

• K-12 Activity at Happy Model Public School

• DCI-IIE Workshops

o Fundamentals of applied Physchometry

o Duct Design & Air Distribution

o Building Information Modeling

o Integration of DG Set Security Fire Alarm and other

Building Services Ingreated BMS System

• Product Presentations

o Systemair – By Mr. Richard Bietmirza

o Sevcon-LTI – By Mr. Gaurav Vasudev

• Annual General Meeting was held with Audited Accounts of

previous financial year adopted and Nomination Committee

for next Society year was approved by members. ETA and

Schnieder made Corporate presentation of their respective

conglomerates.

• IIE/DCI entered into an agreement with CAD Studio to

undertake 40 hours 7 day course on Revit MEP training

course

This edition of Twitter covers an important topic of Commercial

Kitchen Ventilation. An adequately designed kitchen ventilation

system should achieve the following objectives.

• Remove cooking fumes at the source, i.e. as near to the

cooking equipment as possible.

• Remove excess hot air and introduce incoming cool clean

air so that a comfortable environment is achieved.

Inadequate ventilation can cause stress, contributing to

unsafe systems of work and high staff turnover.

• Ensure that the air movement in the kitchen does not cause

discomfort.

• Provide sufficient air for complete combustion at fired

appliances, and prevent the risk of carbon monoxide

accumulating.

• Be easy to clean, avoiding the build-up of fat residues and

blocked air inlets which lead to loss of efficiency and

increase risk of fire.

• Be quiet and vibration free.

With Season's Greetings and Best

Wishes for a very Happy New Year,

from the Twitter team.

Sunil Kher

President (2012-2013)

Workshop on BIMIt gives us immense pleasure to inform the readers

that under the patronage of Mr. Sunil Kher, a

workshop on BIM (Building Information Modeling)

was successfully conducted on 15th September’

2012 at India International Center, New Delhi.

Building Information Modeling (BIM) or Virtual

Design & Construction (VDC), as the name

suggests, is enabling the developers and other

stakeholders to reap the benefits of the technology subject and details presented by the guest speaker Mr. Parveen Sharma and avoid the project delays caused due to poor from M/s Intec Infocom (www.intecinfocom.com) were very informative design coordination. The BIM technology helps in and appreciated by the participants. Mr. Parveen Sharma is an Architect optimizing the designs and integrating with other with Masters Degrees in Computer Science and Computer Applications applications to extract intelligence for all participants (M. Sc & MCA). of a construction project.

The workshop was attended by Mr. Sunil Kher, Mr. Prabhat Goel, Mr. V K The workshop was attended by the participants Seth, Mr. Dhiraj Rastogi & Mr. Sunil Yadav. Mr Dhiraj Rastogi was the from various organizations (DLF, Fortis, Godrej, driving force behind the success of the workshop . Special thanks to Mr. Blue Cost Group, AECOM, Elumatech, etc.). The Sunil Kher and the DCI secretariat for making the workshop a success.

IIE Delhi has started its 14th batch in advance diploma

course in HVAC&R from 7th August 2012. We have very

bright students in the current batch. Companies looking

for qualified trained HVAC Engineers can register with IIE

for placement. For details Pl contact Mr. V K Seth at the

following address :

www.ierfeducation.org;

mail: ierf05@gmail.com; ierf05@airtelmail.in;

1. IIE Delhi organised a workshop

on Duct Design & Air Distribution

by Dr. A K Ahluwalia at INDIA

INTER NATIONAL CENTRE

ANNEXE on 1st September

2012. It was attended by 36

participants from industry. The

workshop was inaugurated by

the President of Delhi Chapter of

ISHRAE, and it was concluded

by Mr. Tejveer Singh, Chief

Engineer DRDO and President of Hyderabad Chapter.

2. IIE also conducted a workshop on Duct Design & Air Distribution for

Bharti Vidyapeeth Deemed University at Pune on 22nd

September. This was a faculty training programme for various

Engineering Colleges organised by Bharti Vidyapeeth. Bharti

Vidyapeeth has shown interest to be associated with IIE Delhi.

3. IIE is planning to conduct a Design Structure Course for industry

Professionals during the winter.

Student Activities

DCI’s student activities team was

ins t rumenta l in spread ing

awareness about the ISHRAE

student chapter and its associated

benefits in ITM College, Gurgaon

and in GB Pant Polytechnic, Delhi.

The student activity chair Mr.

Dhiraj Rastogi & Co-chair Mr.

Sunil Yadav conducted the

ISHRAE presentation at ITM

College, Gurgaon on 30th August,

which was attended by over 60 students. The college faculty advisor

Mr. Joydeep Chakraborty made all efforts to ensure maximum student

participation and making the event successful.

Product presentation on Victaulic Coupling was arranged for the

benefit of students at GB Pant Polytechnic on 3rd September’2012.

The presentation was attended by over 35 students and college

faculty members. The National President Mr. Sushil K Choudhury

graced the event and addressed the gathering. Efforts made by the

faculty advisor Mr. Rajinder Singh, Victaulic RM Mr. Nitin & DCI

Secretary Mr. Vikram ensured the success of the event.

K-12 ActivityDelhi Chapter of ISHRAE organized a K-12 Activity at Happy Model

School, Janak Puri on 23rd August. The activity included a Painting

Competition for students of grade 2nd to 5th. 250 enthusiastic students

participated in the event. Staff & volunteers at the school were very

grateful & apprecitative of ISHRAE’S initiative.Mr Paryushan Jain and

Mr Arvind Kumar from DCI oversaw the event with the kind assistance of

the School principal Mrs Astha. Refreshments were given to all children

at the end of the program alongwith a certificate of participation.

DCI conducted a

p r e s e n t a t i o n o n

T h e r m a l E n e r g y

Storage System& its

bene f i t s on 28 th

September at the

School of Planning &

Archi tecture, New

Delhi.

The presentation was

carried out by Mr. Sunil

Kher and Mr. Ekansh Kshetrapal from M/s SEVCON. The

program was addressed by the National President Mr.

Sushil Choudhury and the DCI President Mr. Sunil Kher.

Also, present were the Student Activity Chair Mr. Dhiraj

Rastogi, DCI Secretariat Mr. Vikram & Mr. Arvind. Efforts

made by the faculty advisor Prof. V K Paul and DCI

secretariat ensured the success of the event.The

presentation was attended by about 50 students and

senior faculty members of the college. The presentation

was very informative and was appreciated by the

participants.

G.B. Pant School of Planning and Architecture

Its our pleasure to inform you that ISHRAE's Delhi

Chapter is now active and kicking on Facebook.

Photographs of past events are uploaded on the website.

We would request you to please like the facebook page:

http://www.facebook.com/IshraeDelhiChapter and tag

yourself and your friends’ photographs.

Commercial Kitchen Exhaust air Treatment

Present Situation of Commercial Kitchen Water based Scrubber

In last few years there has been rapid development of catering When we talk about the water based scrubbers they are cheap

industry, which exhausted untreated air consists of Grease, and can handle oil contents from the exhaust, some pros &

Smoke, and Odor generated from Grilling, Broiling & Frying cons are

Operations. ØLow initial cost

ØRemoves Grease and oil with low efficiency In the U.S, Environmental Protection Agency (EPA) and ØNot effective on small, sub-micron particlesOccupational Safety and Health Administration (OSHA) made ØHigh water consumption and operating costsit compulsory for commercial kitchens and restaurants to treat ØHigh disposal cost the air before discharging it to atmosphere in order to protect ØRequires large space to accommodatethe environment and the neighborhoods. ØHigh and cumbersome maintenance

In our country, off late, I have seen this change happening now,

people are more vigilant towards the environment and UV-C Lightsometimes out of compulsion as neighborhood does not want UV-C Light normally installed in hoods to keep the hoods and Smoke, Grease, Oil fumes and food odor are discharged ducts cleantowards their home or work place directly.

Pros As per local laws all the commercial kitchen air exhaust ØUVC light breaks down grease collected in hoodshould be discharged in the atmosphere, 2 meters above the ØHelps with odor controlheight of the building and the duct carrying this exhaust air ØNo water is required for cleaning the hoods should be fire rated. ØMinimal cost of maintenance As a responsible citizen of this universe and to protect our Cons mother Earth following buildings & applications must treat ØIneffective on airborne grease and oil particles are the Kitchen Exhaust air before discharging into the

discharged to the atmosphereatmosphereØBulb must be protected

• Restaurants Grilling and Frying foods • Hotels • Industrial ØLife of bulb is for limited hours

Kitchens • Cafes • Hospitals • Sport arenas • Schools • Theatres ØWorkforce should be protect against prolonged

& Multiplexes • Office Buildings • Food Courtsexposure

Kitchen Exhaust air contains small sub microns particles of

smoke & oil and when mixed with water vapors forms grease Dry Scrubber- Electrostatic Precipitatorand odour.

Till few years back in India, we all have been using the water

based air scrubbers to remove oil, smoke and grease from the

exhaust air and with introduction of Electrostatic precipitation

technology for air treatment there has been a revolutionary

change although this technology has been in use worldwide for

last 50 years.

What is electrostatic precipitation and how it works effectively

on air borne particles:

Electrostatic Precipitators work by charging the smoke and

grease particles, as they pass through an ionization

fieldparticles are charges to positive and then charged

particles go into a collection cell made up of oppositely

charged metal plates that push and/or pull the charged

particles onto the plates and out of the air stream, in this

Essentially, all the particles in Kitchen Exhaust air to be

removed effectively and efficiently

There are multiple choices available today as a restaurant/

kitchen owner when it comes to filtering kitchen hood exhaust

air

1. Water based air scrubber

2. UV-C Light

3. Dry Scrubber - Electrostatic Precipitation

By: Pankaj Saxena

Air contaminant size

Fiture 1. Common air contaminants and their relative sizes [Hinds 1982].

Pre Filter Ionizer Collector Post Filter/ Odor ControlPlates

Contd. on next page

Commercial Kitchen Exhaust air Treatment

Present Situation of Commercial Kitchen Water based Scrubber

In last few years there has been rapid development of catering When we talk about the water based scrubbers they are cheap

industry, which exhausted untreated air consists of Grease, and can handle oil contents from the exhaust, some pros &

Smoke, and Odor generated from Grilling, Broiling & Frying cons are

Operations. ØLow initial cost

ØRemoves Grease and oil with low efficiency In the U.S, Environmental Protection Agency (EPA) and ØNot effective on small, sub-micron particlesOccupational Safety and Health Administration (OSHA) made ØHigh water consumption and operating costsit compulsory for commercial kitchens and restaurants to treat ØHigh disposal cost the air before discharging it to atmosphere in order to protect ØRequires large space to accommodatethe environment and the neighborhoods. ØHigh and cumbersome maintenance

In our country, off late, I have seen this change happening now,

people are more vigilant towards the environment and UV-C Lightsometimes out of compulsion as neighborhood does not want UV-C Light normally installed in hoods to keep the hoods and Smoke, Grease, Oil fumes and food odor are discharged ducts cleantowards their home or work place directly.

Pros As per local laws all the commercial kitchen air exhaust ØUVC light breaks down grease collected in hoodshould be discharged in the atmosphere, 2 meters above the ØHelps with odor controlheight of the building and the duct carrying this exhaust air ØNo water is required for cleaning the hoods should be fire rated. ØMinimal cost of maintenance As a responsible citizen of this universe and to protect our Cons mother Earth following buildings & applications must treat ØIneffective on airborne grease and oil particles are the Kitchen Exhaust air before discharging into the

discharged to the atmosphereatmosphereØBulb must be protected

• Restaurants Grilling and Frying foods • Hotels • Industrial ØLife of bulb is for limited hours

Kitchens • Cafes • Hospitals • Sport arenas • Schools • Theatres ØWorkforce should be protect against prolonged

& Multiplexes • Office Buildings • Food Courtsexposure

Kitchen Exhaust air contains small sub microns particles of

smoke & oil and when mixed with water vapors forms grease Dry Scrubber- Electrostatic Precipitatorand odour.

Till few years back in India, we all have been using the water

based air scrubbers to remove oil, smoke and grease from the

exhaust air and with introduction of Electrostatic precipitation

technology for air treatment there has been a revolutionary

change although this technology has been in use worldwide for

last 50 years.

What is electrostatic precipitation and how it works effectively

on air borne particles:

Electrostatic Precipitators work by charging the smoke and

grease particles, as they pass through an ionization

fieldparticles are charges to positive and then charged

particles go into a collection cell made up of oppositely

charged metal plates that push and/or pull the charged

particles onto the plates and out of the air stream, in this

Essentially, all the particles in Kitchen Exhaust air to be

removed effectively and efficiently

There are multiple choices available today as a restaurant/

kitchen owner when it comes to filtering kitchen hood exhaust

air

1. Water based air scrubber

2. UV-C Light

3. Dry Scrubber - Electrostatic Precipitation

By: Pankaj Saxena

Air contaminant size

Fiture 1. Common air contaminants and their relative sizes [Hinds 1982].

Pre Filter Ionizer Collector Post Filter/ Odor ControlPlates

Contd. on next page

process system can achieve efficiency upto 95-99%, which is • Electrostatic cell are type permanent cleanable type does

calculated using ASHRAE Dust Spot Test Standard 52.1 or not requires replacement for long period

Cold DOP. • Fan section is attached at the discharge end and fan always

work in clean environment thus reducing the maintenance Electrostatic precipitators are non-discriminate particle cost and saves energyarrestors it works effectively on particles size 10 microns to

• Unlike other technologies used today, electrostatic 0.01 microns. precipitators under normal operating conditions, require

only minimal maintenance. Advantages of Electrostatic Precipitators - Dry • These electrostatic air cleaners can come with automatic

Scrubbers self-washing systems

• Constant high collection efficiency between 95 -99 % can

capture particles as small as 0.01 microns,Typical layout for Kitchen Exhaust System• Air flow remains constant and continuously remove oil For odour control of exhaust, air activated carbon filter are most particles because of low and constant pressure drop of 6-7 suitable as the air comes out from the kitchen is free from oil mm across the filters which also help in reducing the fan and dust which provides longer life to carbon filters.power consumption

• Low power consumption by electrostatic air cleaners Only Disadvantages of electrostatic precipitators is high Initial normally varies between 50- 85 watts for 1500 CFM to 7500 cost but the same can be overcome by quick payback by saving CFM in power consumption and water consumed in wet scrubbing

system. Normal payback period is between 2- 2½ years.

If you are located in a high-rise without roof access to ventilate

your kitchen exhaust or facing the high cost of fire retardant

duct work, electrostatic air cleaners (dry Scrubber can help

exhaust at street levelsince discharge air is very clean and free

from oil and smoke.

Pankaj Saxena, Mechanical

Engineer with specialization in Air-

conditioning and Refrigeration,

working as Vice President –

Technical and New Product

Development with M/s Ruskin Titus

India which was formerly known as

About the Author

Pankaj Saxena, Mechanical Engineer

Tomkins Building Products, with 26 years of successful

experience in the field of HVAC , Indoor Air Quality and Kitchen

Exhaust Air Treatment.

The concept of Dry Scrubber for Kitchen Exhaust Air

application was promoted by the author in India about 8 years

ago, initially large Industrial Kitchen, Star Hotels opted for the

energy & water efficient air clean cleaning system.

process system can achieve efficiency upto 95-99%, which is • Electrostatic cell are type permanent cleanable type does

calculated using ASHRAE Dust Spot Test Standard 52.1 or not requires replacement for long period

Cold DOP. • Fan section is attached at the discharge end and fan always

work in clean environment thus reducing the maintenance Electrostatic precipitators are non-discriminate particle cost and saves energyarrestors it works effectively on particles size 10 microns to

• Unlike other technologies used today, electrostatic 0.01 microns. precipitators under normal operating conditions, require

only minimal maintenance. Advantages of Electrostatic Precipitators - Dry • These electrostatic air cleaners can come with automatic

Scrubbers self-washing systems

• Constant high collection efficiency between 95 -99 % can

capture particles as small as 0.01 microns,Typical layout for Kitchen Exhaust System• Air flow remains constant and continuously remove oil For odour control of exhaust, air activated carbon filter are most particles because of low and constant pressure drop of 6-7 suitable as the air comes out from the kitchen is free from oil mm across the filters which also help in reducing the fan and dust which provides longer life to carbon filters.power consumption

• Low power consumption by electrostatic air cleaners Only Disadvantages of electrostatic precipitators is high Initial normally varies between 50- 85 watts for 1500 CFM to 7500 cost but the same can be overcome by quick payback by saving CFM in power consumption and water consumed in wet scrubbing

system. Normal payback period is between 2- 2½ years.

If you are located in a high-rise without roof access to ventilate

your kitchen exhaust or facing the high cost of fire retardant

duct work, electrostatic air cleaners (dry Scrubber can help

exhaust at street levelsince discharge air is very clean and free

from oil and smoke.

Pankaj Saxena, Mechanical

Engineer with specialization in Air-

conditioning and Refrigeration,

working as Vice President –

Technical and New Product

Development with M/s Ruskin Titus

India which was formerly known as

About the Author

Pankaj Saxena, Mechanical Engineer

Tomkins Building Products, with 26 years of successful

experience in the field of HVAC , Indoor Air Quality and Kitchen

Exhaust Air Treatment.

The concept of Dry Scrubber for Kitchen Exhaust Air

application was promoted by the author in India about 8 years

ago, initially large Industrial Kitchen, Star Hotels opted for the

energy & water efficient air clean cleaning system.