Indoor Environmental quality of Green Building Dr. N. Sai Bhaskar Reddy Green- Green-Building Strategies for the Chief Executive Officer [CEO], Mitigation of Climate ChangeGEOECOLOGY ENERGY ORGANISATION [GEO] 08-11-2011 to 10-11-2011 08-11- 10-11- CCCEA, Dr. MCR Human Resource Dr. http://e-geo.org Development Institute of AP
Building indoor environment covers the environmental aspects in the design, analysis, and operation of energy-efficient, healthy, and comfortable buildings. Fields of specialization include thermal indoor airarchitecture, HVAC design, comfort, quality (IAQ), control lighting, acoustics, systems Indoor environment
Environmental SymptomsCondition(s)• 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
Most people spend at least half of their lives indoors.Poor indoor air Indoor air can INDOORquality can be be more harmful AIR more harmful than outdoor CONCERNS for children . air. Poor indoor air quality can cause respiratory problems.
Indoor air pollution is thepresence of one or morecontaminants indoors that carrya certain degree of humanhealth risk. Indoor air issuesmay be traced to the beginningof civilization. Prehistoricrecords note the problem ofsmoke in caves.Field studies of humanexposure to air pollutantsindicate that indoor air levels ofmany pollutants may be two tofive times, and on occasionmore than one hundred times,higher than outdoor levels.
Based on Specific Building Combustion Furniture Chemical activity Building Food Water materials Smoking Outdoor air activity pollutionSources of Indoor Pollutants
Condition associated withcomplaints of discomfortincluding headache;nausea; dizziness;dermatitis; eye, nose,throat, and respiratoryirritation; coughing;difficulty concentrating;sensitivity to odors;muscle pain; and fatigue. Sick building syndrome
Contamination Contamination Inadequate from inside from outside ventilation 52% building 16% building 10% Contamination Microbial Unknown sources from buildingcontamination 5% 13% fabric 4% Cause of SBS
Personal factors (health, Mean radiant psychology, Air temperature temperature sociology &situational factors) Air movement / Relative humidityvelocity (see wind (see also Insulative clothing chill factor) perspiration) Activity levels. Thermal Comfort
insufficient freshoutdoor air enteringa ventilation system are often the directresult of overzealous energy-saving procedures.
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. Acoustics
How to Control/ EliminateIndoor Air PollutantsDon’t Smoke inside Pay attention to Check combustion the home. housekeeping. appliances. Control/ eliminate excess Test your home for moisture Radon •Improve home ventilation
Have furnace, Never run flues, your car chimney inside aninspected and attached cleaned garage Never use Install a unvented carbon space monoxideheaters/ gas detector logs in your home
Control Moisture In and Around the Home 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
Mouldsare fungi that grow in the form of multicellular filaments called hyphae.
HIGH INFLAMMATORYMEDIATORSFOUND IN NASAL FLUIDS OFPERSONS IN DAMP BUILDINGSMITES, BACTERIA, MOLDS,ENDOTOXINS ALL CONTRIBUTEMINIMIZED BY HUMIDITY &MOISTURE CONTROL IN BUILDINGS
In 1990 EPA placed indoor air pollution at the topof the list of 18 sources of cancer riskIndoor pollution is rated by risk analysisscientists as high-risk health problem for humansRadon is one of the three most dangerous indoorair pollutants, along with cigarette smoke andformaldehydeRadon is the second leading cause of lung cancer,after smokingNearly 1 in 15 homes in the U.S. has high levelof indoor radonHomes 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 wellsINDOOR AIR POLLUTION: RADON
Radon Resistant- Construction TechniquesA. 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.INDOOR AIR POLLUTION: RADON