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. 

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