[EN 12792:2003, 264]:ventilation through leakage paths (infiltration) and openings (ventilation) in the building which relies on pressure differences without the aid of powered air movement components:− airing;− shaft ventilation;− cross ventilation
[AIVC, Air infiltration and ventilation glossary, 1992]:ventilation provided to a space as the result of specific action to ensure its introduction. Such ventilation may be provided by natural means through purpose provided openings of the required size and position, or …Continue reading →
[AIVC, Air infiltration and ventilation glossary, 1992]:a system in which air is supplied to a space, so creating an internal positive pressure. Air leaves the bui1ding through adventitious or purpose provided openings.(see adventitious opening; fortuitous leakage purpose provided opening)