This issue can be solved by using high temperature heat pipes with a ceramic pipe container.
Ceramics for high heat applications.
Broadly speaking uhtcs are borides carbides nitrides and oxides of early.
Ceramics are also more chemically resistant and can be used in wet environments where steel bearings would rust.
Similarly in applications closer to us such as infrared heaters in modern houses high temperature furnaces barbeque grills and household heating appliances glass ceramics stand out with their sleek stylish look the versatile material options and their ability to resist different influences.
State of the art the heat pipe technology is well known for very high heat fluxes.
Technical ceramic materials stand out due to unique set of properties such as high resistance to corrosion erosion and wear electrical and thermal insulation at high temperatures and high heat resistance.
High temperature heat exchangers based on ceramic materials open up such opportunities in many applications.
State of the art for high temperature heat pipes are nickel based alloys as container material and alkali metals as working fluids cs k na li.
These unique characteristics can be further developed optimised and matched for use in industrial applications.
In some cases their electricity insulating properties may also be valuable in bearings.