chapter 8: indoor environmental quality - amazon s3green... · •minimum indoor air quality...

8/8/2018

1

Chapter 8: Indoor Environmental Quality

1© 2014 - 2018 Conserve Green Building and MEP Solutions. All rights reserved.

Learning Objectives

• Minimum indoor air quality performance

• Environmental tobacco smoke control

• Enhanced indoor air quality strategies

• Low-emitting materials

• Construction indoor air quality management plan

• Indoor air quality assessment

• Thermal comfort

• Interior lighting

• Daylight

• Quality views

• Acoustic performance2© 2014 - 2018 Conserve Green Building and MEP Solutions. All rights reserved.

8/8/2018

2

What constitutes Indoor Environment?

Air Quality

Thermal Comfort

Lighting Comfort

Acoustics


Significant for schools

Significance


8/8/2018

3

• We spend 90% of the time indoor

• Indoor 2-5 times more polluted compared tooutdoors

• Improvement in indoor environment improvesproductivity and reduces absenteeism


Minimum indoor air quality performance


8/8/2018

4


Intent

•To contribute to the comfort and well-being ofbuilding occupants by establishing minimumstandards for indoor air quality (IAQ).

Ventilation

Natural Ventilation

Mechanical Ventilation

Mixed mode

Ventilation

CIBSE ApplicationManual 10

ASHRAE 62.1 2010


8/8/2018

5

Enhanced indoor air quality strategies



Intent

•To promote occupants’ comfort, well-being,and productivity by improving indoor airquality.

8/8/2018

6

Strategies & Implementation



Increased Ventilation

•Provide increased ventilation beyond ASHRAE62.1 2010 requirements

• Increased ventilation is a tradeoff with energyperformance

•Consider Heat recovery ventilation andDemand Control ventilation to improve energyperformance

8/8/2018

7

Heat Recovery Wheel/Heat Recovery Ventilation

© 2014 - 2018 Conserve Green Building and MEP Solutions. All rights reserved. 13


Demand Control Ventilation

CO2 Sensor

8/8/2018

8

•Use entryway systems 10 feet long at all regular entrances

•In mechanically ventilated buildings, use MERV rated filters for all AHUs in accordance with ASHRAE 52.2-2007


Entryway systems:

Filtration:


Avoid Cross contamination from contaminated areas

• Janitor rooms, copier rooms & chemical storage rooms should be✓Directly exhausted

outside✓Negative Pressure✓Self closing doors✓Impermeable deck to

Partition

8/8/2018

9

Environmental tobacco smoke control


Protect occupants from second hand smoke


Intent

•To prevent or minimize exposure of buildingoccupants, indoor surfaces, and ventilation airdistribution systems to environmental tobaccosmoke

8/8/2018

10

Non Residential Projects

•Prohibit smoking inside the building•Prohibit smoking outside thebuilding except designated smokingareas.•Prohibit smoking outside thebuilding if spaces used for businesspurposes.•Provide signage indicating nosmoking policy within 10’ of allbuilding entrances.


• Prohibit smoking in common areas• Ensure air tightness in the unit by

blower test• Weather seal Window and door

frames• Seal penetrations in walls and

ceilings• Demonstrate a maximum leakage

of 0.23cfm/sq.ft at 50 Pa


Residential Projects: Compartmentalization of smoking areas

•Exterior Smoking areas shall be atleast 25’away from windows, doors or air intake points

Both Residential & Non Residential Projects

8/8/2018

11

Low-emitting materials

Paints & Coatings

Carpet & Flooring

Adhesives & Sealants

Composite & Agrifiber Materials



Intent

•To reduce concentrations of chemicalcontaminants that can damage air quality,human health, productivity, and theenvironment.

8/8/2018

12

Significance


• Finishing materials have high concentration ofpollutants such as Volatile OrganicCompounds(VOCs), Formaldehyde etc

• These pollutants pose serious problems onIAQ and to smog


8/8/2018

13




Material LEED Compliance requirement

Adhesives, sealants, primers, Woodfinishes, floor coatings

Comply with VOCrequirements of South CoastAir Quality ManagementDistrict (SCAQMD)

Aerosol adhesives, Architectural paints &coatings, Interior anti-corrosive and anti-rust paint

Comply with Green Seal

Carpets Comply with Green Label Plus(Carpet and Rug Institute)

Carpet cushion Comply with Green Label(Carpet and Rug Institute)

Vinyl, linoleum, laminate, wood, ceramic,rubber flooring

Comply with FloorScore

Furniture and seating Comply with GREENGUARD

8/8/2018

14

Construction indoor air quality management plan



Intent

•To promote the well-being of constructionworkers and building occupants by minimizingindoor air quality problems associated withconstruction and renovation.

8/8/2018

15



▪ Develop an IAQ Management which meets the requirements of SMACNA IAQ Guidelines for buildings under construction

▪ IAQ Management shall cover✓Protection of HVAC equipment✓Source control✓Housekeeping✓Pathway interruption✓Scheduling


8/8/2018

16

▪ If permanently installed air handlers are usedduring construction, provide MERV(MinimumEfficiency Reporting Value) rated filters in allreturn grills.

▪ ASHRAE 52.2 provides methodology toevaluate MERV rating of filters


Indoor air quality assessment


8/8/2018

17


Intent

•To establish better quality indoor air in thebuilding after construction and duringoccupancy.

▪ Flush the building bysupplying outdoor air

▪ Conduct IAQ test

Indoor Air Quality Assessment


8/8/2018

18

Thermal comfort



Intent

•To promote occupants’ productivity, comfort,and well-being by providing quality thermalcomfort.

8/8/2018

19

▪HVAC design should comply with ASHRAE standard 55 2010 for thermal comfort.

▪Thermal comfort depends on parameters such as temperature, humidity, air velocity etc.,

Thermal comfort


Thermal comfort controllability


• Provide more number of operable controls for the occupants to control the thermal environment such as temperature & air velocity.

• Thermostats, fans, accessible diffusers & operable windows are acceptable control devices.

8/8/2018

20

Thermal comfort Verification


• Thermal comfort survey to be conducted within one year after occupancy.

• At least a satisfaction level of 80% has to be achieved

• If more than 20% of the occupants dissatisfied corrective actions to be taken.

Interior lighting


8/8/2018

21


Intent

•To promote occupants’ productivity, comfort,and well-being by providing high-qualitylighting.

▪Provide individual lighting controls for workstations▪Shared multi occupant spaces like meeting rooms should have controls for different lighting requirements

Interior Lighting


8/8/2018

22

Day light &

Quality Views



Intent

•Daylight:

To connect building occupants with theoutdoors, reinforce circadian rhythms, andreduce the use of electrical lighting byintroducing daylight into the space.

•Quality Views:

To give building occupants a connection to thenatural outdoor environment by providingquality views.

8/8/2018

23

▪ Optimize the glazing orientation to maximizedaylight and minimize heat gain/heat loss

▪ Use day lighting devices such as light shelves, suntubes etc

Day light & Quality Views

External & Internal Light Shelves

Sun tubes


▪ Use glare control devices likeinternal and external shades

▪ Consider using Automatedshading devices

▪ Reduce reflective glazing whichmay cause external glare and birdcollision


8/8/2018

24

Acoustic performance



Intent

•To provide workspaces and classrooms thatpromote occupants’ well-being, productivity,and communications through effective acousticdesign.

8/8/2018

25

▪ Reduce background noise from HVAC Equipment▪ Sound Transmission Class and Reverberation time to comply with relevant standards

Acoustic Performance



• Minimum indoor air quality performance

• Environmental tobacco smoke control

• Enhanced indoor air quality strategies

• Low-emitting materials

• Construction indoor air quality management plan

• Indoor air quality assessment

• Thermal comfort

• Interior lighting

• Daylight

• Quality views

• Acoustic performance

Summary

8/8/2018

26


Questions?Put your questions in the forum

chapter 8: indoor environmental quality - amazon s3green... · •minimum indoor air quality...

Documents