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The IVAIRE Study: Relative Performance of Energy and Heat Recovery Ventilators in Cold Climates
Abstract:This paper describes the results obtained in a two-year randomized intervention field study investigating the impact of ventilation rates on indoor air quality (IAQ) and the respiratory health of asthmatic children in Québec City, Canada. The focus of this article is on the comparative effectiveness of heat recovery ventilators (HRVs) and energy recovery ventilators (ERVs) at increasing ventilation rates, improving IAQ, and maintaining an acceptable indoor relative humidity (RH). In 14% of the homes, the RH was found to be too low in winter. Providing more cold and dry outside air to under-ventilated homes in winter further reduces indoor RH. Thus, low-RH homes in the intervention group were chosen to receive ERVs (instead of HRVs) to increase the ventilation rate. The installation of HRVs or ERVs led to a near doubling of the ventilation rates in the intervention group homes which led to a significant reduction in the concentration of several key of pollutants. The ERVs were also effective in maintaining an acceptable indoor RH since they avoided excessive dehumidification of the home by recovering moisture from the exhaust airstream through the enthalpy core, otherwise associated with increased cold supply air rates.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1474998Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 344
 R. Dietz R. N. and E. Cote, “Air infiltration measurements in a home using a convenient perfluorocarbon tracer technique”, Environment International, 8(1-6), pp. 419-433, 1982.
 ASTM Test Method E 741-00, “Standard test method for determining air change in a single zone by means of a tracer gas dilution, American Society for Testing and Materials, West Conshohocken, PA, 2000.
 P. Lajoie, D. Aubin, V. Gingras, P. Daigneault, F. Ducharme, D. Gauvin, D. Fugler, J.-M. Leclerc, D. Won, M. Courteau, S. Gingras, M.-E. Heroux, W. Yang, and H. Schleibinger, “The IVAIRE project – a randomized controlled study on the impact of ventilation on indoor air quality and the respiratory symptoms of asthmatic children in single family homes”, Indoor Air, 25(6), pp. 582-597, 2015.
 Health Canada, “Exposure Guidelines for Residential Indoor Air Quality”, ISBN 0-662-17882-3, 1987.
 D. Won, D. Aubin, D. Fugler, D. Gauvin, P. Lajoie, and H. Schleibinger, “Comparison of air exchange rates measured with different methods and influencing factors: preliminary results of a field study involving asthmatic children”, 12th International Conference on Indoor Air Quality and Climate, pp. 1-6, 2011.
 L. Zhang, X.R. Zhang, Q.Z. Miao, and L.X. Pei, “Selective permeation of moisture and VOC’s through polymer membranes used in total heat exchangers for indoor air ventilation, Indoor Air, 22(4), pp. 321-330, 2012.
 https://www.ncbi.nlm.nih.gov/pccompound, retrieved 30 Mar 2018.
 CRC handbook Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. pp. C–301, E–61. ISBN 0-8493-0462-8.
 D. Aubin, D. Won, H. Schleibinger, P. Lajoie, D. Gauvin, V. Gingras, and D. Fugler, “Effectiveness Of Ventilation Interventions At Improving Indoor Air Quality and Ventilation Rates In Canadian Homes With Asthmatic Children”, ASHRAE IAQ 2013: Environmental Health in Low Energy Buildings, pp. 1-7. 2013.
 T. Salthammer, S. Mentese, and R. Marutzky, “Formaldehyde in the indoor environment”, Chemical Reviews, 110 (4), pp. 2536-2572, 2010.