نتایج جستجو برای: driven cross ventilation
تعداد نتایج: 753999 فیلتر نتایج به سال:
BACKGROUND Use of fuel heaters is associated with childhood asthma. However, no studies have evaluated the associations of flue use and mechanical ventilation (ventilation) with asthma symptoms in schoolchildren. METHODS This cross-sectional study investigated schoolchildren in grades 1 through 6 (age 6-12 years) in Sapporo, Japan. From November 2008 through January 2009, parents completed qu...
This paper presents CFD simulations of natural displacement ventilation airflows in which the buoyancy force produced by a heat source is opposed by a wind force. Cases investigated focus on windbuoyancy force relationships for which a two-layer stratification is maintained. CFD predictions of the position of the interface separating the two layers and the change in reduced gravity (temperature...
OBJECTIVES/HYPOTHESIS To determine the resorption rate and biocompatibility characteristics of novel cross-linked hydrogel ventilation tubes and varied formulations of polyester ventilation tubes in a Chinchilla model. STUDY DESIGN Animal Study. METHODS Three cross-linked glycosaminoglycan hydrogel ventilation tubes fabricated by cross-linking thiol-modified chondroitin sulfate or thiol-mod...
When hydrogen gas is used or stored within a building, as with a hydrogen-powered vehicle parked in a residential garage, any leakage of unignited H2 will mix with indoor air and may form a flammable mixture. One approach to safety engineering relies on buoyancy-driven, passive ventilation of H2 from the building through vents to the outside. To discover relationships between design variables, ...
A study was realized to assess the effects of historical and projected future climates on hygrothermal performance cross-laminated timber wall assemblies in 12 Canadian cities belonging several climate regions zones for two cladding ventilation types. Water ingress assembly supposed be 1% wind-driven rain (WDR), airflow rate drainage cavity calculated using local data. The simulation results sh...
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