Multizone Airflow Modeling Use Case Description

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Dynamic Ventilation Control (Demand Controlled Ventilation) If properly sized, ventilation flow rate can be reduced in proportion to occupancy Can significantly reduce energy if properly implemented Control options Scheduled On/off with occupancy sensors Indirect occupancy count using CO 2 concentration (most common) Direct occupancy count (developmental) Required by ASHRAE 90.1 for some high-occupancy density spaces
Issues with CO 2 based DCV Mediocre accuracy of HVAC-grade sensors People – building division of ventilation in ASHRAE 62.1 eliminates fixed set point approach Multiple spaces are a further complication
Page 1: INTEGRATING INDOOR AIR QUALITY AND
Page 4 and 5: Energy conservation and ambient env
Page 6 and 7: Priority of energy, ambient environ
Page 8 and 9: Residential & commercial differ, bu
Page 10 and 11: Importance of IEQ - asthma Accordi
Page 12 and 13: Healthcare and productivity costs (
Page 14 and 15: Poor IAQ is not a problem of wealth
Page 16 and 17: State of knowledge is reflected in
Page 18 and 19: Comfort vs. Sensory Load &Ventilati
Page 20 and 21: ASHRAE Standard 62.1- Air Quality
Page 22 and 23: Productivity vs. Ventilation Rate S
Page 24 and 25: Probability of Infection vs. Ventil
Page 26 and 27: Current minimum standards may aim t
Page 28 and 29: USGBC-LEED Increased ventilation (
Page 32 and 33: Dedicated Outdoor Air Systems 100%
Page 34 and 35: Integrating IAQ and Energy Efficien
Page 36 and 37: Studies directed at integrated desi
Page 38 and 39: Studies directed at integrated desi
Page 40 and 41: Lee, et al. energy and energy cost
Page 42 and 43: Lee, et al., annual productivity be
Page 44 and 45: Johansson - representative result:

Multizone Airflow Modeling Use Case Description

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