Indoor environmental quality of green building
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Indoor Environmental quality of Green Building
Green-Building Strategies for the Mitigation of Climate Change
08-11-2011 to 10-11-2011CCCEA, Dr. MCR Human Resource Development
Institute of AP
Dr. N. Sai Bhaskar ReddyChief Executive Officer [CEO],
GEOECOLOGY ENERGY ORGANISATION [GEO]
http://e-geo.org
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Indoor environment
Building indoor environment covers the environmental aspects in the design, analysis, and operation of energy-efficient, healthy, and comfortable buildings. Fields of specialization include
architecture,
HVAC design,
thermal comfort
,
indoor air quality (IAQ),
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Environmental Condition(s) Symptoms
• Ergonomic Conditions • Headache
• Noise and Vibration • Fatigue
• Poor Concentration
• Dizziness
• Tiredness
• Headache with nausea
• Ringing in ears
• Pounding heart
• Relative Humidity • Dry throat
• Shortness of breath or bronchial asthma
• Irritation and infection of respiratory tract
• Relative Humidity • Nasal problems (stuffiness, irritation)
• High Temperatures
• Warm Air • Skin problems (dryness, irritation, rashes)
• Low Relative Humidity • Excessive Air Movement
• Artificial Light • Eye problems (burning, dry gritty eye)
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INDOOR AIR
CONCERNS
Most people
spend at least half of their lives indoors.
Indoor air can be more
harmful than
outdoor air.
Poor indoor air quality can cause
respiratory problems.
Poor indoor air quality
can be more
harmful for children .
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Indoor air pollution is the presence of one or more contaminants indoors that carry a certain degree of human health risk. Indoor air issues may be traced to the beginning of civilization. Prehistoric records note the problem of smoke in caves.
Field studies of human exposure to air pollutants indicate that indoor air levels of many pollutants may be two to five times, and on occasion more than one hundred times, higher than outdoor levels.
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Sources of Indoor Pollutants
Based on Specific Building
Combustion activity
Furniture
Chemical
Building materials Food Water
Smoking activity
Outdoor air pollution
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Sick building syndrome
Condition associated with complaints of discomfort including headache; nausea; dizziness; dermatitis; eye, nose, throat, and respiratory irritation; coughing; difficulty concentrating; sensitivity to odors; muscle pain; and fatigue.
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Sick building
syndrome
The specific causes of the symptoms are often not known but sometimes are attributed to the effects of a combination of substances or individual susceptibility to low concentrations of contaminants.
The symptoms are associated with periods of occupancy and often disappear after the worker leaves the worksite.
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Cause of SBS
Inadequate ventilation
52%
Contamination from inside building 16%
Contamination from outside building 10%
Microbial contaminatio
n 5%
Contamination from building
fabric 4%
Unknown sources 13%
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Thermal Comfort
Personal factors (health, psychology,
sociology & situational factors)
Air temperature
Mean radiant temperature
Air movement / velocity (see
wind chill factor)
Relative humidity (see
also perspiration)
Insulative clothing
Activity levels.
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GRIHA
GRIHA – green building ‘design evaluation system’– A tool to design,
operate, evaluate and maintain resource efficient ‘healthy’ and ‘intelligent’ building
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Natural Lighting
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Heat
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insufficient fresh outdoor air entering a ventilation system are often the direct
result of overzealous energy-saving procedures.
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Acoustics
Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an acoustical engineer. The application of acoustics can be seen in almost all aspects of modern society with the most obvious being the audio and noise control industries.
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How to Control/ EliminateIndoor Air Pollutants
Don’t Smoke inside the
home.
Pay attention to
housekeeping.
Check combustion appliances.
Test your home for
Radon
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Have furnace,
flues, chimney inspected
and cleaned
Never run your car inside an attached garage
Never use unvented
space heaters/ gas
logs
Install a carbon
monoxide detector
in your home
Reduce Carbon Monoxide Potential
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Repair leaks and drips
Check to be sure clothes dryer vented to outside
Move water from gutters and downspouts away from house
Use ventilating fan in kitchen and bathroom
No water in crawl space
Control Moisture In and Around the Home
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Mouldsare fungi that grow in the form of multicellular filaments called hyphae.
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HIGH INFLAMMATORY MEDIATORS
FOUND IN NASAL FLUIDS OF PERSONS IN DAMP BUILDINGS
MITES, BACTERIA, MOLDS, ENDOTOXINS ALL CONTRIBUTE
MINIMIZED BY HUMIDITY & MOISTURE CONTROL IN BUILDINGS
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Radon
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INDOOR AIR POLLUTION: RADON
In 1990 EPA placed indoor air pollution at the top of the list of 18 sources of cancer risk
Indoor pollution is rated by risk analysis scientists as high-risk health problem for humans
Radon is one of the three most dangerous indoor air pollutants, along with cigarette smoke and formaldehyde
Radon is the second leading cause of lung cancer, after smoking
Nearly 1 in 15 homes in the U.S. has high level of indoor radon
Homes with high radon level can be fixed
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INDOOR AIR POLLUTION: RADON
A. Cracks in concrete slabsB. Spaces behind brick wallsC. Pores and cracks in
concrete blocksD. Floor wall jointsE. Exposed soil as in a sumpF. Weeping tile, if drained to
open sumpG. Mortar jointsH. Loose fitting pipe
penetrationsI. Open tops of block wallsJ. Building materials such as
some rocksK. Water, from some wells
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INDOOR AIR POLLUTION: RADON
Radon Resistant-Construction Techniques
A. Gas Permeable LayerB. Plastic SheetingC. Sealing and CaulkingD. Vent PipeE. Junction Box
Other radon reduction techniques include sealing, home/room pressurization, heat recovery ventilation and natural ventilation.
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Bone
Brick pieces
Pottaryshards
Biochar /Charcoal
Slag
Quartz
Soil
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Pottaryshards
Slag
Shell
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LIME MORTAR
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BIOCHAR URINALSTAPPING NITROGEN FROM URINE OF ANIMALS AND PEOPLE USING BIOCHAR
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OTHER BIOCHAR APPLICATIONS
BIOCHAR BRICKS, GREEN BUILDINGS
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WATER – LESS PLANTS
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TR
AD
ITIO
NA
L H
OU
SE
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References
http://icmr.nic.in/bumay01.pdfhttp://www.indiaenvironmentportal.org.in/f
iles/who%20guidelines%20for%20indoor%20air%20pollution.pdf
http://www.slideshare.net/saibhaskar/climate-change-and-green-buildings
http://....
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Thank you