laminar flow

[AIVC, Air infiltration and ventilation glossary, 1992]:flow in which fluid moves smoothly. In this flow form cross stream momentum transfer takes place by viscous action alone and mixing between flow strata does not occur.(see transition flow; turbulent flow)

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large opening

[AIVC, Air infiltration and ventilation glossary, 1992]:hole or gap in a building envelope which is generally purpose made, for example, a door window or vent.

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latent heat transfer

[AIVC, Air infiltration and ventilation glossary, 1992]:heat added or removed during a change of state of a substance i.e. solid, to a liquid to a gas or vice versa, the temperature remaining constant.(see sensible heat transfer)

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