The carbon dioxide concentration patterns in a large, high-rise, office building in Ottawa were examined experimentally using an automated data acquisition system. Daily C02 concentration profiles throughout the building and air change rates, using SF6 as a tracer gas, were measured at minimum outdoor air supply rates during much of a heating season.
The design of Rotherham's new courthouse adopts passive solar architecture and heat recovery systems in an effort to make the legal process less energy intensive. Stephen Ashley reports.
The adsorption of vapours of different volatility and polarity on three materials widely used indoors (carpet, gypsum board, wall coating) has been investigated in small test chambers, in order to study methodological aspects and to estimate the importance of the phenomenon for human exposure assessments. The output of the models used, with rate constants describing two different sinks, is discussed.
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