The wind and buoyancy pressure driving forces for natural ventilation of buildings are very low, typically less than 10 Pa. Depending upon the prevailing climatic and thermal conditions, or even the location of a building on a site in relation to other surrounding buildings and landscape, the predominant pressure force incident on a purpose-provided natural ventilation opening can either be closer to the lower range of pressure differentials (< 2 Pa) or vary over a wider range of higher pressures (2 - 10 Pa).
Ventilation is one of the most important measures to dilute indoor air pollutants. In order to maintain a clean indoor air environment, not only the total ventilation rate of the building but also the distribution of outdoor air to each area must be taken into consideration. A performance evaluation of various ventilation systems, which have different air supply and exhaust equipment, has been made. This investigation was undertaken over a heating period, in a full-scale test house.
A reduction in the emissions arising from urban activities can be achieved by a combination of energy efficiency measures and a move away from fossil fuels. Progress may be enabled by the deployment of new materials and critical control within buildings and the adop1ion of building- integrated renewable energy conversion technologies. This paper describes the integration of cooperating passive and active renewable technologies within a major building refurbishment in Glasgow It also describes a method for the assessment of replication potential.
The Peterborough Environment City Trust has embarked on an ambitious energy saving programme involving the whole community Rose Riddell looks at what has been achieved so far.
Acoustic designers could be costing clients money by over-specifying acoustic solutions. Now, software has been developed that tracks how sound moves through a building and how to stop it
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