Airflow behavior inside a cleanroom with vertical unidirectional flow has been investigated. The design parameters, such as porosity and height of raised floor, width of clean room and inlet velocity profile, which affect the uniformity of air velocity distribution inside the cleanroom have been studied computationally. The Reynolds-averaged Navier-Stokes equations governing the flow are solved using a finite-volume code ST AR-CD. The standard k-e turbulence model has been used.
The purpose of this study was to correlate building envelope performance problems which are currently being experienced in low rise wood frame residential buildings in the coastal climate of the BC Lower Mainland, with sources of moisture, and design and construction features. This study has facilitated the identification of key aspects of the design, construction, operations and maintenance processes leading to the problems, which in tum provides the construction industry with focal points for the development of solutions to the current problems.
The BRE has examined the suitability, effectiveness and potential energy savings of retrofitting natural and low energy ventilation systems in UK offices during refurbishment projects.
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