Heat Drainage
Heat dissipation is the movement of heat away from it’s source into the surrounding environment and this can happen by three methods, conduction, radiation and convection. Without heat dissipation the heating wires in underfloor heating would simply heat up without the floor above or the room benefiting from the warmth.
Heat dissipation allows the underfloor heating system to warm the floor and the room and preventing unwanted heat dissipation ensures the heating system runs efficiently. You can prevent unwanted heat dissipation by placing efficient insulation beneath the heating system therefore stopping the heat from being lost downwards.
Conductive heat dissipation is the most significant way heat travels through a solid. As the heating wire gets hot its molecules and atoms start to vibrate rapidly and these vibrations, or heat, are then passed on to the surrounding material. In the case of undertile heating this means the surrounding tile adhesive heats up and then conducts it’s heat to the tiles above. If anyone stands on the tiles their feet will rapidly warm up through conduction between the tile surface and the soles of their feet.
Convective heat dissipation is the main form of heat transfer in a liquid or a gas. As the tiles warm up they heat the air directly above them through conduction as it is in contact with the warm tile surface. As the air heats up it starts to rise due to buoyant convection. Buoyant convection takes place because air expands as it warms up which leads to it becoming lighter. This lighter air rises as the cold, denser air above it falls to take it’s place. With underfloor heating a very large area heats up, the whole floor in fact, so you do not get the draughts caused by radiators.
Mini Physics https://www.miniphysics.com/
Heat Dissipation https://www.heatmat.co.uk/help-support/glossary/heat-dissipation/