منابع مشابه
Dust in Ventilation Ducts: Accumulation, Measurement and Removal Report A9
This thesis focuses on dust accumulation in, and removal from, recently installed supply air ducts and on the bristle behaviour of rotating duct cleaning brushes. The results of dust accumulation, measured using three different methods, were compared and the amount of dust in newly installed air ducts was evaluated. The vacuum test was found to be an efficient method of collecting dust samples ...
متن کاملPressure Losses across Multiple Fittings in Ventilation Ducts
The accurate prediction of pressure losses across in-duct fittings is of significance in relation to the accurate sizing and good energy efficiency of air-delivery systems. Current design guides provide design methods and data for the prediction of pressure losses only for a single and isolated fitting. This study presents an investigation of pressure losses across multiple interactive in-duct ...
متن کاملComputational Modeling and Validation of Aerosol Deposition in Ventilation Ducts
In fire models, the accurate prediction of aerosol & soot concentrations in the gas phase and aerosol & soot deposition thicknesses in the condensed phase is important for a wide range of applications, including human egress calculations, heat transfer in compartment fires, and forensic reconstructions of fires. During a fire, in addition to soot transport by advection and diffusion, a signific...
متن کاملEffect of Radiation Heat Loss and Ventilation on Dust Explosions in Spherical Vessels
The flame propagation through a coal dust-air mixture in a spherical vessel was studied by means of a one-dimensional, Arrhenius-type kinetics and quasi-steady model. The model includes the evaporation of the volatile matter of dust particles into a known gaseous fuel (methane) and the single-stage reaction of the gas-phase combustion. Effect of venting devices as safety idea and the radiation ...
متن کاملAdvanced System Design of In-Building Wireless Communication Networks Using Ventilation Ducts
This thesis describes techniques to successfully design an IEEE 802.11g wireless system that uses ventilation ducts to distribute the signals throughout the building. To describe these techniques we present a wide array of measurements that have been performed on test duct networks, but setup in a laboratory and in buildings. We present trials of different duct modifications and antenna excitat...
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ژورنال
عنوان ژورنال: Journal of Sustainable Construction Materials and Technologies
سال: 2016
ISSN: 2458-973X
DOI: 10.29187/jscmt.2017.3