Ammar Al-Shemery, Associate Director of the Abu Dhabi Campus at INSEAD Business School - Does good indoor air quality really improve workplace productivity?
air quality assessment and its relation to potential health impactsUTKARSH YADAV
The presentation aims at studying the quality of air in delhi and doing a correlative study between the quality of air and various health impacts that occur . also a study of increase in pattern of patients in hospitals due to various respiratory diseases .
various pollutants of the air are studied for this and also the sources and for sample few regions were selected in delhi , also a sesonal variation is studied due to air pollution.
Further functions like household production function and demand function indicating an impact on household due to pollution .
a data sample was collected and an econometric and graphical analysis is also done
air quality assessment and its relation to potential health impactsUTKARSH YADAV
The presentation aims at studying the quality of air in delhi and doing a correlative study between the quality of air and various health impacts that occur . also a study of increase in pattern of patients in hospitals due to various respiratory diseases .
various pollutants of the air are studied for this and also the sources and for sample few regions were selected in delhi , also a sesonal variation is studied due to air pollution.
Further functions like household production function and demand function indicating an impact on household due to pollution .
a data sample was collected and an econometric and graphical analysis is also done
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The Building and Environmental Services Association Indoor Air Quality group was called to address increasing concern in the health implications of being exposed to poor indoor air quality.
Indoor Air Quality Monitoring and Assessment for Companies to Understand the current indoor air quality problems in the industry.
This will help us to:
Taking necessary action to reduce poor indoor air quality
Planning for the future to reduce indoor air pollution
Dr. Renée Anthony - Hazards and Prevention of Airborne Exposures and RisksJohn Blue
Hazards and Prevention of Airborne Exposures and Risks - Dr. Renée Anthony, Great Plains Center for Agricultural Health, from the 2016 Iowa Pork Congress, January 27-28, Des Moines, IA, USA.
More presentations at http://www.swinecast.com/2016-iowa-pork-congress
IOT ENABLED EMBEDDED BASED REAL TIME AIR QUALITY MONITORING SYSTEMMOHAMMED FURQHAN
When we breathe polluted air pollutants get into our lungs; they can enter the bloodstream and be carried to our internal organs such as the brain. This can cause severe health problems such as asthma, cardiovascular diseases and even cancer and reduces the quality and number of years of life.
Experimental analysis and thermal comfort index of air conditioned meeting halleSAT Journals
Abstract India’s building energy consumption is increasing continuously. The subcontinent does not have custom made thermal comfort standards. We conducted thermal comfort field study in meeting hall, Madurai, tamilnadu, india. Experimental study of thermal comfort was conducted in three levels of load conditions and three levels of air flow in meeting hall during summer 2014. The above three level of load condition and air flow measurements values observed by using direct reading instruments. Thermal comfort indices were also calculated and compare to the natural ventilated meeting hall and outdoor environment. This study aims to evaluate the indoor comfort quality of the meeting hall. This paper is focused on improving the indoor air quality by controlling the vital parameters like carbon dioxide, carbon monoxide, oxygen, room temperature, relative velocity and relative humidity which were used as indicators for indoor air quality and comfort levels. The investigated meeting hall building is located in India, tamilnadu, Madurai and the volume of the building is about 10.60m (length) × 9.14m (width) × 3m (height). This paper provides the detailed specifications to improve the thermal comfort in the air conditioned living atmosphere and ensure safety and healthy living environment. This paper contained Experimental analysis and Calculation of thermal comfort index. Keywords: Meeting hall, Indoor Air Quality, various loads, various air flow rates, thermal comfort index.
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.
B&ES Indoor Air Quality Group Meeting - RIBA LondonCamfil UK
The Building and Environmental Services Association Indoor Air Quality group was called to address increasing concern in the health implications of being exposed to poor indoor air quality.
Indoor Air Quality Monitoring and Assessment for Companies to Understand the current indoor air quality problems in the industry.
This will help us to:
Taking necessary action to reduce poor indoor air quality
Planning for the future to reduce indoor air pollution
Dr. Renée Anthony - Hazards and Prevention of Airborne Exposures and RisksJohn Blue
Hazards and Prevention of Airborne Exposures and Risks - Dr. Renée Anthony, Great Plains Center for Agricultural Health, from the 2016 Iowa Pork Congress, January 27-28, Des Moines, IA, USA.
More presentations at http://www.swinecast.com/2016-iowa-pork-congress
IOT ENABLED EMBEDDED BASED REAL TIME AIR QUALITY MONITORING SYSTEMMOHAMMED FURQHAN
When we breathe polluted air pollutants get into our lungs; they can enter the bloodstream and be carried to our internal organs such as the brain. This can cause severe health problems such as asthma, cardiovascular diseases and even cancer and reduces the quality and number of years of life.
Experimental analysis and thermal comfort index of air conditioned meeting halleSAT Journals
Abstract India’s building energy consumption is increasing continuously. The subcontinent does not have custom made thermal comfort standards. We conducted thermal comfort field study in meeting hall, Madurai, tamilnadu, india. Experimental study of thermal comfort was conducted in three levels of load conditions and three levels of air flow in meeting hall during summer 2014. The above three level of load condition and air flow measurements values observed by using direct reading instruments. Thermal comfort indices were also calculated and compare to the natural ventilated meeting hall and outdoor environment. This study aims to evaluate the indoor comfort quality of the meeting hall. This paper is focused on improving the indoor air quality by controlling the vital parameters like carbon dioxide, carbon monoxide, oxygen, room temperature, relative velocity and relative humidity which were used as indicators for indoor air quality and comfort levels. The investigated meeting hall building is located in India, tamilnadu, Madurai and the volume of the building is about 10.60m (length) × 9.14m (width) × 3m (height). This paper provides the detailed specifications to improve the thermal comfort in the air conditioned living atmosphere and ensure safety and healthy living environment. This paper contained Experimental analysis and Calculation of thermal comfort index. Keywords: Meeting hall, Indoor Air Quality, various loads, various air flow rates, thermal comfort index.
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.
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Ammar Al-Shemery, Associate Director of the Abu Dhabi Campus at INSEAD Business School - Does good indoor air quality really improve workplace productivity?
1. Does Good Indoor Air Quality Really
Improve Workplace Productivity?
FMP and Property Event – 29 & 30 April 2014
Ammar Al-Shemery
Associate Director of the Abu Dhabi Campus
Head of Operations and Campus Services
2. Contents
• Why the need for good indoor air?
• HVAC Systems
• Productivity in the Workplace
• Case Study
3. Why the need for good indoor air?
Estimated that inefficient buildings cost British business £135bn
per year in lost opportunity (Glensler, 2005)
1-2% improvement in productivity has a larger economic return
than 100% saving in energy costs” (CIBSE1999)
Indoor air pollution is the 8th most important in the range of risk
factors in the global burden of disease and responsible for 2.7%
of it (WHO, 2005)
50% of all illnesses are either caused or aggravated by
polluted indoor air. (The American College of Allergy, Asthma and
Immunology, ACAAI, 2009)
The total annual cost of poor IAQ to U.S. employers is $15
billion due to worker inefficiency and sick leave (OSHA, 2008)
5. Definition of Indoor Air Quality?
The environmental characteristics inside buildings that may
affect human health, comfort, or work performance. IAQ
characteristics include the concentrations of amounts of
pollutants in indoor air, as well as air temperature and
humidity.
(Lawrence Berkeley National Laboratory, 2011)
Air within a building occupied for at least one hour by people of
varying states of health. This can include the office, classroom,
transport facility, shopping centre, hospital and home.
National Health and Medical Research Council of Australia (NHMRC)
6. Major Source of Contaminants
Contaminants Major Source
Particles Dust (generated inside and outside), smoking,
cooking
Allergens (a substance that can
cause an allergic reaction)
Molds, pets, many other resources
Bacteria and viruses People, moisture, pets
Carbon dioxide (CO2) Occupants breathing, combustion
Odoriferous chemicals People, cooking, molds, chemicals, smoking
Volatile Organic Compound
(VOC)
Construction materials, furnishings, cleaning
products
Tobacco smoke Smoking
Carbon monoxide (CO) Incomplete and/or faulty combustion, smoking
Radon (Rn) Radioactive decay of radium in the soil
Formaldehyde (HCHO) Construction materials, furniture, smoking
Oxides of Nitrogen Combustion, smoking
Sulfur dioxide Combustion
Ozone Photocopiers, electrostatic air cleaners
McDowall, 2007
7. HVAC Systems
Objectives of the HVAC system
To control:
1)Air temperature
2)Humidity
3)Air circulation
4)Air quality
(ASHRAE, 2004)
Energy Analysis and Comfort Solutions Inc., 2006
8. Achieving Efficiency
HVAC Selection Parameters
Commissioning of HVAC
System
HVAC Maintenance and
Cleaning
National Air Duct Cleaning Association, NADCA ,
2005
Building Use
Classification
Air
Handling
Unit
Supply
Ductwork
Return
Ductwork/Exhaust
Industrial 1 year 1 year 1 year
Residential 1 year 2 years 2 years
Light Commercial 1 year 2 years 2 years
Commercial 1 year 2 years 2 years
Healthcare 1 year 1 year 1 year
Marine 1 year 2 years 2 years
HVAC Cleanliness Inspection Schedule
HVAC Systems
9. Productivity in the Workplace
Factors Influencing Comfort
(McDowall, 2007)
Factors Affecting Workplace
Productivity
(Hedge, 2004)
17%
10. Measuring Productivity
McCartney &
Humphreys (2002)
Lorsch and
Abdou (1994)
Wyon (1996)
A- Simulated work
B- Diagnostic tests
C- Embedded tasks
D- Absenteeism records
E- Self-assessment
F- Use of existing measures
D- Absenteeism records
Productivity in the Workplace
14. PPM Programme
Sr. # Item Parameter
Satisfied
Parameter not
Satisfied
1 Filters and air cleaning devices
2 Outdoor air dampers and actuators
3 Humidifiers
4 Dehumidification coils
5 Drain pans and other adjacent surfaces
subject to wetting
6 Outdoor air intake louvers, bird screens,
mist eliminators and adjacent areas
7 Sensors used for dynamic minimum
outdoor air control
8 Air handling systems except for units
under 2000 cfm
9 Cooling towers
10 Floor drains located in plenums or
rooms that serve as air plenums
11 Equipment component accessibility
12 Visible microbial contamination
13 Water intrusion or accumulation
Total 8 5
Percentage 61.5% 38.5%
Minimum Maintenance Activity and Frequency
CASE STUDY
15. Comfort Conditions
CASE STUDY
Parameter Condition
Satisfied
Condition not
Satisfied
Basic Thermal Comfort
• Consider humidity, air velocity, radiation
• Consider occupant clothing and metabolic rate
• Use ASHRAE Thermal Comfort Tool (ASHRAE 1997) or equivalent to select indoor
design
• Design for part-load conditions
• Select thermostat locations carefully
• Educate occupants regarding clothing adaptation
Zoning and Occupant Control
• Use separate zone for each unique microenvironment
• Educate occupants about thermostat settings and HVAC operation
• Expand comfort envelope using personal cooling/ventilation
• Expand comfort by occupant control over natural conditioning
• Use operator control in case of “thermostat wars”
Thermal Radiation
• Use radiation (hot or cool) to expand the thermal comfort envelope
• Shade excessive solar radiation
Air Movement
• Achieve the minimum velocity
• Expand the upper thermal limits using air movement
• Address drafts by selection of diffusers and heat location
Part-Load Control
• Maintain air velocity
• Control humidity
Operation Capabilities
• Design to allow flexibility that can retain satisfaction levels
• Adjustable set points allow response to occupant expectations
HVAC System Checklist for
Comfort Conditions
18. On-Site Improvements
Changing cleaning material and
detergents to green materials that
are more environmental friendly.
Adjusting air dampers for better
ventilation rates
Adjusting VCDs (volume control
dampers) towards better air
movement.
Installing a temporary fan
near the 9th floor corridor
door to balance air pressure.
Placing lockable plastic
covers on thermostat controls
Implementing “Zone
Operating Schedule”
Sealing window gaps to
avoid infiltration and
enhance building
envelope.
CASE STUDY
19. Indoor Air Quality Test
CASE STUDY
Direct Instrumental
Method of Analysis
8 hours
20. Survey Questionnaire
CASE STUDY Survey Question(s) Air Quality Parameter
(HAAD Standard)
Effects Source
3 - PM10 and TSP The lower region of the
respiratory tract.
Dust
4 & 5 - Air temperature
- Relative
humidity
Thermal comfort HVAC system
6
- Yeast and
mould
Sensitive people to
allergenic reactions.
HVAC system, high
humidity, reduced ventilation
and HVAC system
condensation.
- Formaldehyde Causes watery eyes, burning
sensations in the eyes and
throat, nausea, and difficulty
in breathing.
Carpet glue, insulation
material, furniture.
- Co Reduces the oxygen supply
to the body causing
suffocation.
Vehicles exhaust entry to the
building.
- Co2 Thermal comfort Ventilation rate (HVAC
system)
7 - VOC Eye, nose, and throat
irritation; headaches, loss of
coordination and central
nervous system
Paint, cleaning material,
adhesive, cosmetics and
carpets
8 - TSP & PM2.5 Respiratory system Cigarette smoke
9 - General perception of air
chemicals’ effects on general
health
Various external and internal
pollution sources
10, 11, 12, 13 & 14 High level of
concentration for most
parameters
Sick building syndrome
(SBS)
Ventilation, poor HVAC
system causing
contamination.
21. Absenteeism Records
CASE STUDY
Cause of absence that is related only to
respiratory, allergy, headache…etc
problems was taken into consideration
25. The Pathway Ahead
1
a)HVAC System technical issues
b)Facility Cleanliness Considerations
c)Indoor Air Quality Investigation
d)Indoor Air Quality Test
e)Survey Questionnaire
f)Interviews
2
On-site improvements
3
Indoor air quality test
4
Absenteeism records