Describes how basic studies (detailed simulations) have been used to define the calculation of energy losses due to ventilation in French regulations, and the "ongoing" research aiming towards a better assessment of air quality.
The technology of chilled ceilings is currently a favourite issue among HVAC technicians. In this article the author describes the advantages of this system.
The development of odor emission rates from EU6 classified glass fiber bag filters was studied in four air-handling units (A HU), and emissions from the same kind of filters with EU3 classified polyester prefilters were studied in two units. The filters were loaded in six AHU in downtown Helsinki. The pressure drop was measured, and the odors of the filters were evaluated by a trained panel under laboratory conditions (T= 20o C, face velocity 1. 0 m/s) every sixth week. The odor emissions of simultaneous atmospheric dust samples were also studied.
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