Reference number : GC-2017-Q4-01751, amendment number : , agreement type : G, recipient legal name : Tariku, Fitsum (British Columbia Institute of Technology), recipient country : CA, recipient province : nan, recipient city : British Columbia|Colombie-Britannique, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : It is very important to investigate the condensation potential on building indoor surfaces since the moisture_x000D_
condensation can have an impact on building energy uses, building envelope durability and occupants' health_x000D_
risks associated with mold growth. The surface temperature of the in-slab duct's embedding concrete slab can_x000D_
be affected by the inflow cold fresh air's temperature, flow rate and the running period of time as well as the_x000D_
in-slab duct size. Unfortunately, the performance of in-slab duct systems in various realistic environmental_x000D_
conditions is not available in literature. The objectives of this proposed research project is to characterize the_x000D_
condensation potentials on the surface of the in-slab duct's embedding concrete slab under various indoor and_x000D_
outdoor design and operating conditions for a range of climatic conditions. To achieve this objective, a series_x000D_
of lab experiments to measure the temperature and the humidity on the surface of concrete slab with the_x000D_
embedded in-slab ducts wrapped with different levels of insulation. In this study, three duct insulation types_x000D_
namely Tyvek, Reflectix, Bubble Wrap will be considered, and their relative performance in comparison with_x000D_
an in-slab duct with no insulation (reference case) will be investigated. The experiment will be conducted using_x000D_
the BCIT Building Science Centre of Excellence's Building Envelope Test Facility (BETF). In the experimental_x000D_
study, four pieces of 200 mm thick rectangle shaped concrete slabs each of which embeds an in-slab duct_x000D_
coming with the same configuration but wrapped with different levels of insulation will be placed inside the_x000D_
BETF. Both upper and bottom surfaces of the concrete slab will be exposed to the same indoor conditions_x000D_
provided by the air conditioning systems in BETF, which will be set at indoor design conditions (i.e. 21°C,_x000D_
30% RH). The edge of the concrete slab at the outside fresh air intake side will be exposed to outdoor climatic_x000D_
conditions. The rest of the edges of the concrete slab will be insulated in order to minimize the undesired heat_x000D_
transfer between the indoor environment and the slab. The measured humidity and temperature at upper and_x000D_
bottom surfaces of the concrete slab will be used to evaluate the condensation potential of the alternative, program purpose french : It is very important to investigate the condensation potential on building indoor surfaces since the moisture_x000D_
condensation can have an impact on building energy uses, building envelope durability and occupants' health_x000D_
risks associated with mold growth. The surface temperature of the in-slab duct's embedding concrete slab can_x000D_
be affected by the inflow cold fresh air's temperature, flow rate and the running period of time as well as the_x000D_
in-slab duct size. Unfortunately, the performance of in-slab duct systems in various realistic environmental_x000D_
conditions is not available in literature. The objectives of this proposed research project is to characterize the_x000D_
condensation potentials on the surface of the in-slab duct's embedding concrete slab under various indoor and_x000D_
outdoor design and operating conditions for a range of climatic conditions. To achieve this objective, a series_x000D_
of lab experiments to measure the temperature and the humidity on the surface of concrete slab with the_x000D_
embedded in-slab ducts wrapped with different levels of insulation. In this study, three duct insulation types_x000D_
namely Tyvek, Reflectix, Bubble Wrap will be considered, and their relative performance in comparison with_x000D_
an in-slab duct with no insulation (reference case) will be investigated. The experiment will be conducted using_x000D_
the BCIT Building Science Centre of Excellence's Building Envelope Test Facility (BETF). In the experimental_x000D_
study, four pieces of 200 mm thick rectangle shaped concrete slabs each of which embeds an in-slab duct_x000D_
coming with the same configuration but wrapped with different levels of insulation will be placed inside the_x000D_
BETF. Both upper and bottom surfaces of the concrete slab will be exposed to the same indoor conditions_x000D_
provided by the air conditioning systems in BETF, which will be set at indoor design conditions (i.e. 21°C,_x000D_
30% RH). The edge of the concrete slab at the outside fresh air intake side will be exposed to outdoor climatic_x000D_
conditions. The rest of the edges of the concrete slab will be insulated in order to minimize the undesired heat_x000D_
transfer between the indoor environment and the slab. The measured humidity and temperature at upper and_x000D_
bottom surfaces of the concrete slab will be used to evaluate the condensation potential of the alternative, agreement title english : Investigation of the Condensation Potential on Concrete Slab with Embedded In-Slab Ductwork, agreement title french : Investigation of the Condensation Potential on Concrete Slab with Embedded In-Slab Ductwork, agreement number : EGP, agreement value : 22519.0, agreement start date : 2018-03-07, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada