Automatic ventilation systems.


Occupant's behavior with respect to window opening: a technical and sociological study.

The occupant's behavior with respect to window opening may greatly affect the ventilation system, the energy consumption orland the indoor air quality. In order to quantify the magnitude of opening times, many surveys have focused on climatic parameters and concluded to the temporal correlation between the timelength of opening and the outside temperature or the solar irradiation. In this paper, we study the influence of sociological and technical parameters on the average time of opening during the winter.

IEA Annex 18/1: Demand controlled ventilating systems.

Describes the activities of Annex 18, whose objectives have been to develop means, methods and strategies for DCV systems and to contribute to the implementation. A DCV system in this annex is defined as a ventilation system in which the air flow rate is governed by airborne pollutants.

IEA Annex 18/2: Demand controlled ventilating systems.

A test programme has been designed to evaluate the performance characteristics of sensors for the automatic control of ventilation rates. 

The potential for residential demand controlled ventilation.

A literature search was performed to gain as much knowledge as was available on ventilation, indoor air quality sensors and demand controlled ventilation (DCV) strategies. Field data was gathered on the time and spatial variation of indoor air quality in houses. Appropriate designs were then developed. Design strategies are discussed elsewhere (1). Hour by hour simulations of the performance of several ventilation systems in various Canadian climates were done. Energy savings were then estimated for DCV and heat recovery ventilation with air to air heatexchange.