1. Conduction - heat can flow through the walls of the space
2. Passive ventilation - heat can flow into cooler air via a vent or grille, without an air-moving device
3. Fan-assisted ventilation - heat can flow into cooler air via  a vent or girille that has an air-moving device
4. Comfort cooling - heat can be moved by a building's comfort cooling system
5. Dedicated cooling - heat can be removed by a dedicated air conditioner

Last updated on July 12, 2011 by Karin Lum