Investigation of CO2 tracer gas-based calibration of multi-zone airflow models

Steven Snyder, T. Agami Reddy, William P. Bahnfleth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper proposes a methodology to calibrate multi-zone air flow models in an existing building. The methodology has been demonstrated with the widely used multi-zone model CONTAM and applied to two buildings, one synthetic and one actual. The methodology builds on previous work, with the calibration process enhanced by the use of carbon dioxide tracer gas test data. The proposed methodology includes performing an airflow-based sensitivity analysis to identify influential system drivers, a tracer gas-based sensitivity analysis to identify macro-zones for model reduction, and finally, a process of tuning the model parameters. It was found that for mechanically ventilated commercial buildings, calibrating multi-zone models by reconciling differences between measured and predicted tracer gas behavior is more strongly impacted by room air change rates than by airflow path leakage parameter tuning.

Original languageEnglish (US)
Title of host publication12th International Conference on Indoor Air Quality and Climate 2011
Pages1817-1822
Number of pages6
StatePublished - Dec 1 2011
Event12th International Conference on Indoor Air Quality and Climate 2011 - Austin, TX, United States
Duration: Jun 5 2011Jun 10 2011

Publication series

Name12th International Conference on Indoor Air Quality and Climate 2011
Volume3

Other

Other12th International Conference on Indoor Air Quality and Climate 2011
CountryUnited States
CityAustin, TX
Period6/5/116/10/11

Fingerprint

Calibration
Gases
Sensitivity analysis
Tuning
Leakage (fluid)
Air
Macros
Carbon dioxide

All Science Journal Classification (ASJC) codes

  • Pollution

Cite this

Snyder, S., Reddy, T. A., & Bahnfleth, W. P. (2011). Investigation of CO2 tracer gas-based calibration of multi-zone airflow models. In 12th International Conference on Indoor Air Quality and Climate 2011 (pp. 1817-1822). (12th International Conference on Indoor Air Quality and Climate 2011; Vol. 3).
Snyder, Steven ; Reddy, T. Agami ; Bahnfleth, William P. / Investigation of CO2 tracer gas-based calibration of multi-zone airflow models. 12th International Conference on Indoor Air Quality and Climate 2011. 2011. pp. 1817-1822 (12th International Conference on Indoor Air Quality and Climate 2011).
@inproceedings{6224c11448774d629f658fb9eae366e6,
title = "Investigation of CO2 tracer gas-based calibration of multi-zone airflow models",
abstract = "This paper proposes a methodology to calibrate multi-zone air flow models in an existing building. The methodology has been demonstrated with the widely used multi-zone model CONTAM and applied to two buildings, one synthetic and one actual. The methodology builds on previous work, with the calibration process enhanced by the use of carbon dioxide tracer gas test data. The proposed methodology includes performing an airflow-based sensitivity analysis to identify influential system drivers, a tracer gas-based sensitivity analysis to identify macro-zones for model reduction, and finally, a process of tuning the model parameters. It was found that for mechanically ventilated commercial buildings, calibrating multi-zone models by reconciling differences between measured and predicted tracer gas behavior is more strongly impacted by room air change rates than by airflow path leakage parameter tuning.",
author = "Steven Snyder and Reddy, {T. Agami} and Bahnfleth, {William P.}",
year = "2011",
month = "12",
day = "1",
language = "English (US)",
isbn = "9781627482721",
series = "12th International Conference on Indoor Air Quality and Climate 2011",
pages = "1817--1822",
booktitle = "12th International Conference on Indoor Air Quality and Climate 2011",

}

Snyder, S, Reddy, TA & Bahnfleth, WP 2011, Investigation of CO2 tracer gas-based calibration of multi-zone airflow models. in 12th International Conference on Indoor Air Quality and Climate 2011. 12th International Conference on Indoor Air Quality and Climate 2011, vol. 3, pp. 1817-1822, 12th International Conference on Indoor Air Quality and Climate 2011, Austin, TX, United States, 6/5/11.

Investigation of CO2 tracer gas-based calibration of multi-zone airflow models. / Snyder, Steven; Reddy, T. Agami; Bahnfleth, William P.

12th International Conference on Indoor Air Quality and Climate 2011. 2011. p. 1817-1822 (12th International Conference on Indoor Air Quality and Climate 2011; Vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Investigation of CO2 tracer gas-based calibration of multi-zone airflow models

AU - Snyder, Steven

AU - Reddy, T. Agami

AU - Bahnfleth, William P.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - This paper proposes a methodology to calibrate multi-zone air flow models in an existing building. The methodology has been demonstrated with the widely used multi-zone model CONTAM and applied to two buildings, one synthetic and one actual. The methodology builds on previous work, with the calibration process enhanced by the use of carbon dioxide tracer gas test data. The proposed methodology includes performing an airflow-based sensitivity analysis to identify influential system drivers, a tracer gas-based sensitivity analysis to identify macro-zones for model reduction, and finally, a process of tuning the model parameters. It was found that for mechanically ventilated commercial buildings, calibrating multi-zone models by reconciling differences between measured and predicted tracer gas behavior is more strongly impacted by room air change rates than by airflow path leakage parameter tuning.

AB - This paper proposes a methodology to calibrate multi-zone air flow models in an existing building. The methodology has been demonstrated with the widely used multi-zone model CONTAM and applied to two buildings, one synthetic and one actual. The methodology builds on previous work, with the calibration process enhanced by the use of carbon dioxide tracer gas test data. The proposed methodology includes performing an airflow-based sensitivity analysis to identify influential system drivers, a tracer gas-based sensitivity analysis to identify macro-zones for model reduction, and finally, a process of tuning the model parameters. It was found that for mechanically ventilated commercial buildings, calibrating multi-zone models by reconciling differences between measured and predicted tracer gas behavior is more strongly impacted by room air change rates than by airflow path leakage parameter tuning.

UR - http://www.scopus.com/inward/record.url?scp=84880527722&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880527722&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84880527722

SN - 9781627482721

T3 - 12th International Conference on Indoor Air Quality and Climate 2011

SP - 1817

EP - 1822

BT - 12th International Conference on Indoor Air Quality and Climate 2011

ER -

Snyder S, Reddy TA, Bahnfleth WP. Investigation of CO2 tracer gas-based calibration of multi-zone airflow models. In 12th International Conference on Indoor Air Quality and Climate 2011. 2011. p. 1817-1822. (12th International Conference on Indoor Air Quality and Climate 2011).