000 02849cam  2200385zi 4500
0019.908613
003CaOODSP
00520221107181712
006m     o  d f      
007cr |n|||||||||
008220301e199902##oncd    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|beng|bfre
043 |an-cn---
0861 |aNH17-354/1999E-PDF
1001 |aWatters, Terry, |eauthor.
24510|aIdentifying and removing pollutants from heat recovery ventilators / |csubmitted to: Don Fugler; submitted by: Terry Watters.
24617|aVentilation ductwork cleaning & maintenance
264 1|aOttawa, Ontario : |bResearch Division, Canada Mortgage and Housing Corporation, |cFebruary 1999.
300 |a1 online resource (30 pages) : |bcharts
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
500 |aDigitized edition from print [produced by Canada Mortgage and Housing Corporation].
504 |aIncludes bibliographical references.
5203 |a"This study investigated the presence of allergens such as dust and molds in heat recovery ventilation systems and the duct work. It also looks at two different types of cleaning equipment and their ability to clean these pollutants from the rigid and flexible ductwork and heat recovery ventilator (HRV) cores in dedicated balanced supply and exhaust ventilation systems. Samples from the ductwork and cores of ten ventilation systems were tested for levels of dust and mold. The ductwork and cores were then cleaned using standard ductwork cleaning apparatus, then tested again to indicate the success of the cleaning process. All houses were tested for air and surface mold counts using an RCS air sampler and typical swab collection systems. Two of the ten houses were retested over a period of fifteen months. There were high mold counts on the surfaces of the supply air ducts. However, there was no correlation to house air mold counts, which were found to be inconclusive. It could not be determined whether airborne molds were considered a health risk in the houses as tested. It was also found that conventional equipment was not effective in cleaning the ductwork systems"--Abstract.
546 |aIncludes summary in English and French.
650 0|aIndoor air pollution|xTesting.
650 0|aDwellings|xHeating and ventilation|xEnvironmental aspects|xTesting.
650 0|aHeat recovery.
650 6|aAir intérieur|xPollution|xEssais.
650 6|aHabitations|xChauffage et ventilation|xAspect de l'environnement|xEssais.
650 6|aChaleur|xRécupération.
7102 |aCanada Mortgage and Housing Corporation. |bResearch Division, |eissuing body.
85640|qPDF|s1.53 MB|uhttps://publications.gc.ca/collections/collection_2022/schl-cmhc/NH17-354-1999-eng.pdf