Field assessment of the effect of different spectrally selective low emissivity glass coatings on the energy consumption in residential application in cold climates

The question: ?How large an effect can changing the glazing system's solar heat gain characteristics have on the overall energy consumption of a house?? can be posed by energy analysts, homeowners and glazing specialists alike. In an effort to quantify such an effect, two sealed, low emissivity, insulating glazing systems (with different solar transmission properties) were evaluated in a side-by-side experiment involving twin-houses, comparing their respective effects on house heating energy consumption (i.e., natural gas for space heating and electricity for air distribution) in a cold climate. This research project was conducted at the Canadian Center for Housing Technology (CCHT) located on the National Research Council Campus in Ottawa. This facility consists of two R-2000 houses that are very nearly identical in every aspect, and are fully instrumentedAnalystes de l?\ue9nergie, propri\ue9taires r\ue9sidentiels et sp\ue9cialistes en vitrages peuvent tous se poser la question suivante : dans quelle mesure le fait de changer les caract\ue9ristiques de gain de chaleur par rayonnement solaire du syst\ue8me de vitrage peut-il influer sur la consommation d?\ue9nergie globale d?une maison ? C?est dans le but de quantifier cette incidence potentielle que l?on a \ue9valu\ue9 deux (2) syst\ue8mes de vitrage isolants \ue0 faible \ue9missivit\ue9 scell\ue9s (ayant l?un et l?autre diff\ue9rentes propri\ue9t\ue9s de transmission du rayonnement solaire) lors d?une exp\ue9rience men\ue9e en parall\ue8le sur des maisons jumel\ue9es, visant \ue0 comparer les incidences respectives de ces deux syst\ue8mes sur l?\ue9nergie consomm\ue9e par les maisons pour le chauffage (soit gaz naturel, pour le chauffage central, et \ue9lectricit\ue9, pour la distribution de l?air) sous un climat froid. Ce projet de recherche a \ue9t\ue9 r\ue9alis\ue9 au Centre canadien des technologies r\ue9sidentielles (CCTR), lequel est situ\ue9 sur le Campus du Conseil national de recherches du Canada, \ue0 Ottawa. Cette installation comprend deux (2) maisons R-2000, qui sont en tous points pratiquement identiques et instrument\ue9es \ue0 fond.Peer reviewed: YesNRC publication: Ye