How axial ventilation fans work and how to specify them: types and pressure ranges, axial vs centrifugal selection, fan curves and fan laws, ErP efficiency grades, and the standards (EN ISO 5801, EN 12101-3, ATEX) that govern them.
How to design smoke and CO control for enclosed and underground car parks, to EN 12101-3 and BS 7346-7 — jet-fan vs ducted systems, sizing logic, and a design/procurement checklist.
