Modelling and verification of convective heat transfer coefficient for induction applications

摘要

In high performance induction heating systems, the coil often has a short lifetime as a result of high power density generated in some areas. The cause of life reduction is often because the cooling effect of the coolant is not sufficient or the heat is not dissipated adequately. This is usually due to a poor heat transfer between the cooling water and the coil. The sizing of the cooling system and the coil have a high impact on the heat transfer and therefore also on service life. Generally, the system parameters affected by this dimensioning are the cooling water temperature, cooling water flow (velocity) and pressure.