There are three main heat transfer mechanisms in Carbolite·Gero products: convection, conduction and radiation. In convection, heat transfer occurs through the movement of a gas or liquid. The tendency for a fluid to move through a gas or gas under gravity is for the temperature to increase, so that the less dense material rises and the cooler, denser material falls. This results in heat transfer. Most Carbolite·Gero products contain air or other atmospheres to which heat will be transferred by convection. The figure shows that convection is the main heat transfer mechanism below 700 "C. Carbolite·Gero ovens can operate in a temperature range of up to 700 ° C and often use a circulating chicken to improve the temperature uniformity in the work room. Conduction is the process by which heat is transferred directly through the material of a substance when there is a temperature difference between adjacent regions. Different materials have different thermal conductivity, which is a measur