indoor environmental quality of green building

 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

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), 

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)

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 .

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.

Sources of Indoor Pollutants

Based on Specific Building

Combustion activity

Furniture

Chemical

Building materials Food Water

Smoking activity

Outdoor air pollution

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.

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.

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%

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.

GRIHA

GRIHA – green building ‘design evaluation system’– A tool to design,

operate, evaluate and maintain resource efficient ‘healthy’ and ‘intelligent’ building

Natural Lighting

Heat

insufficient fresh outdoor air entering a ventilation system are often the direct

result of overzealous energy-saving procedures.

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.

How to Control/ EliminateIndoor Air Pollutants

Don’t Smoke inside the

home.

Pay attention to

housekeeping.

Check combustion appliances.

Test your home for

Radon

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

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

Mouldsare fungi that grow in the form of multicellular filaments called hyphae.

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

Radon

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

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

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.

Bone

Brick pieces

Pottaryshards

Biochar /Charcoal

Slag

Quartz

Soil

Pottaryshards

Slag

Shell

LIME MORTAR

BIOCHAR URINALSTAPPING NITROGEN FROM URINE OF ANIMALS AND PEOPLE USING BIOCHAR

OTHER BIOCHAR APPLICATIONS

BIOCHAR BRICKS, GREEN BUILDINGS

WATER – LESS PLANTS

TR

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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://....

Thank you