[AIVC, Air infiltration and ventilation glossary, 1992]:the heat absorbed or evolved by a substance during a change of temperature that is not accompanied by a change of state.(see latent heat transfer)

[ISO 16814:2008, 3.37]:pollution load caused by those pollution sources that have an impact on the perceived air quality.NOTE The load is often expressed by a sensory unit, the olf.

(See ventilation, shaft)