Simulation study of the thermal insulation performance of a vacuum‐insulated tube inside an electrically heated device

To realize stable heating of a heated cigarette while effectively controlling the outer‐wall temperature of an electric heating‐type appliance, a vacuum‐insulated tube (VIT) is currently widely used for thermal insulation against the heating element. The effects of the critical parameters of the VIT, gases at different pressures, wall thickness, and material on its thermal insulation performance, were simulated using Fluent to provide guidance on the structure and performance optimization of the EHD. When the absolute pressure of gas in the VIT was