I don't know as far as ELEMENT, however, ceramic is used in high heat engines, exhaust stacks, and furnaces for a reason. Also, space shuttles use ceramic or porcelain to re-enter the earths atmosphere witch to take the heat as its breaks through the atmosphere. If you are looking for metals, there are different types and even coated metals.
answ2. As far as thermal conductivity is concerned, graphene and diamond top the list.
Graphene 4800 - 5300, Diamond 1000 - 2000, Silver, 429, copper 401.
The units are in W.m-1.K-1.
Diamond is used as a heat sink under some microprocessors. Maybe to be overtaken by graphene.
The best material is copper of alumninium.
The Element Copper is an excellent conductor of both heat and electricity due to the presence of free electrons in the metal.
copper
The most common one that is very effective is METAL. Well, metal is not an element Of elements, silver is the best conductor of heat followed by copper. The best conductor of heat overall at room temperature is diamond, not an element of course.
By far it is water.
The best material is copper of alumninium.
The element is used to absorb heat in a spacecraft is helium. There are modern technologies that are being developed for the same purpose.
Gold, aluminum, and copper all are good absorbers of heat
helium
Copper
Beryllium (Be)
Copper
44.9
The evaporation coils, where the HCFCs absorb heat and evaporate.
The Element Copper is an excellent conductor of both heat and electricity due to the presence of free electrons in the metal.
Copper is a metallic element, well-known for its conductivity of electricity -and heat.
copper