ASHRAE Journal - September 2013 - 70
technical feature
table 1 (Cont.) Building processes linking IEQ, health, and building energy use.15
ProCess
link to energy
link to ieQ and HealtH
• Minor energy use for cleaning
• May reduce indoor odors and resuspended particles
• Cleaning compounds can be indoor pollutant sources
• Workstation cleanliness has been associated with reduced symptom reports and with
lower dust fungal loads
• Degrades thermal performance of
building envelopes
• May increase dehumidification energy
• Increases indoor microbiological contamination, including fungi and bacteria
• Affects presence, survival and pathogenicity of viruses
• Linked to increase in respiratory symptoms and asthma and other allergy symptoms
• Reducing outdoor air ventilation rates to reduce fan
energy and heating or cooling energy use
• Reduces potential dilution and removal of pollutants
• Reduces energy used at power plants, resulting in cleaner outdoor air available for ventilation
• Often energy neutral; except when source or its replacement consumes energy or affects heat transfer from
indoors to outdoors
• May reduce hvAC and filter maintenance needs
• May reduce the need for additional ventilation
• Reduces indoor pollutant concentrations
• May improve IEQ by reducing load on air filters, air cleaners, and interior surfaces
enveloPe
insulation and
tigHtness
• Reduce heat gain and loss
• Reduces moisture and pollutant intrusion
• Changes dew-point location; could be beneficial or harmful
• Reduces infiltration that provides air change where proper means are not in use
• Reduces garage pollutant intrusion
CraWlsPaCe or
slab sealing
• Reduces heat gain and loss
• vapor intrusion
• Reduces moisture intrusion
• Changes dew-point location
• Reduces infiltration that provides air change where proper means are not in use
• Reduces intrusion of vapor and pollutants
• Reduces unwanted heat loss, heat gain,
and air leakage
• Reduces need for electric illumination
• Can be source of unwanted air and water leakage
• Can be a source of desirable ventilation
• Can back up or replace ventilation for
mechanical systems
• Dilutes indoor-generated pollutants
• Associated with improved symptoms, respiratory illness, perceived air quality, and work
performance
• Brings outdoor pollutants and moisture into building
• In some climates and for some systems: inadequate ventilation leads to increased humidity, condensation, mold, and possibly allergens and vermin
• Can provide natural lighting and beneficial views to outdoor
• Can be source of noise intrusion
• Energy used to overcome airflow resistance
• Reduced energy when indoor air is recirculated
• Reduces indoor gas concentrations with indoor or outdoor origin
• Reduces SvOCs
• Filters can be odor sources
• Filters, if wet, can be contaminated microbiologically
• Chemical reactions on filters can be sources of cleaner or fouler air
sPaCe Cleaning
Water leaks
oCCuPant
beHavior
indoor
Pollutant
sourCe removal
or reduCtion
WindoWs and
skyligHts:
ventilation,
ligHting
gaseous air
Cleaning
70
ASHRAE JouRnAl
ashrae.org
Septem ber 2013
ASHRAE Journal - September 2013
Table of Contents for the Digital Edition of ASHRAE Journal - September 2013
Contents
ASHRAE Journal - September 2013 - Cover1
ASHRAE Journal - September 2013 - Cover2
ASHRAE Journal - September 2013 - 1
ASHRAE Journal - September 2013 - 2
ASHRAE Journal - September 2013 - Contents
ASHRAE Journal - September 2013 - 4
ASHRAE Journal - September 2013 - 5
ASHRAE Journal - September 2013 - 6
ASHRAE Journal - September 2013 - 7
ASHRAE Journal - September 2013 - 8
ASHRAE Journal - September 2013 - 9
ASHRAE Journal - September 2013 - 10
ASHRAE Journal - September 2013 - 11
ASHRAE Journal - September 2013 - 12
ASHRAE Journal - September 2013 - 13
ASHRAE Journal - September 2013 - 14
ASHRAE Journal - September 2013 - 15
ASHRAE Journal - September 2013 - 16
ASHRAE Journal - September 2013 - 17
ASHRAE Journal - September 2013 - 18
ASHRAE Journal - September 2013 - 19
ASHRAE Journal - September 2013 - 20
ASHRAE Journal - September 2013 - 21
ASHRAE Journal - September 2013 - 22
ASHRAE Journal - September 2013 - 23
ASHRAE Journal - September 2013 - 24
ASHRAE Journal - September 2013 - 25
ASHRAE Journal - September 2013 - 26
ASHRAE Journal - September 2013 - 27
ASHRAE Journal - September 2013 - 28
ASHRAE Journal - September 2013 - 29
ASHRAE Journal - September 2013 - 30
ASHRAE Journal - September 2013 - 31
ASHRAE Journal - September 2013 - 32
ASHRAE Journal - September 2013 - 33
ASHRAE Journal - September 2013 - 34
ASHRAE Journal - September 2013 - 35
ASHRAE Journal - September 2013 - 36
ASHRAE Journal - September 2013 - 37
ASHRAE Journal - September 2013 - 38
ASHRAE Journal - September 2013 - 39
ASHRAE Journal - September 2013 - 40
ASHRAE Journal - September 2013 - 41
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ASHRAE Journal - September 2013 - 49
ASHRAE Journal - September 2013 - 50
ASHRAE Journal - September 2013 - 51
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ASHRAE Journal - September 2013 - 53
ASHRAE Journal - September 2013 - 54
ASHRAE Journal - September 2013 - 55
ASHRAE Journal - September 2013 - 56
ASHRAE Journal - September 2013 - 57
ASHRAE Journal - September 2013 - 58
ASHRAE Journal - September 2013 - 59
ASHRAE Journal - September 2013 - 60
ASHRAE Journal - September 2013 - 61
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ASHRAE Journal - September 2013 - 70
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ASHRAE Journal - September 2013 - Cover3
ASHRAE Journal - September 2013 - Cover4
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