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Coal is usually not a very good conductor of heat, but it depends a lot on the type of coal as to how poor a conductor it is.
In a study done at the University of Oklahoma, conductivities of 55 different types of US coals were measured at 22°C in the laboratory. Their thermal conductivities ranged from 0.22 to 0.55 W/m°K. Other, more limited studies get the same types of values.
For comparison, air at room temperature and pressure (which is considered a pretty fair insulator) has a conductivity of about 0.026 W/m°K (about 1/10 of coal). Copper (which is considered a really good conductor) at the same conditions is around 360 W/m°K (roughly 1000 times that of coal).
By that comparison, coal would be considered a fairly poor conductor of heat. This is kind of interesting since graphite and diamond (pure forms of carbon - which is what coal is mostly made up of) are rather good conductors of heat. The difference is mostly due to the fact that coal is not PURE carbon, that it has a fairly heterogeneous structure (as opposed to crystalline), that it varies in how wet or dry it is, and that it may actually be somewhat porous.
What else can I help you with?
Is gas a good conductor of heat?
No, gas is not a good conductor of heat. Gases are poor conductors of heat because their molecules are widely spaced and they do not have a fixed structure like solid materials that allow for efficient heat transfer.
Is samarium a good conductor?
Samarium is a good conductor for heat and electricity.
Is magnesium a good heat conductor?
Yes, most metals are good conductors of heat.
Is copper a good condutor of heat?
Any metal substance is a good conductor of head and electricity. Therefore, yes, it is a good conductor of heat. It is also malleable. That is why there are copper wires in existence.
Is AL a good conductor of heat and electricity?
yes, he is
Is duct tape a good conductor of heat?
Duct tape is not a good conductor of heat. Its composition and thickness make it a poor conductor, so it does not readily transfer heat.
Is a pencil a good conductor of heat?
No, a pencil is not a good conductor of heat because it is made of graphite, which is a poor conductor of heat. Heat will not travel easily through a pencil, making it a good insulator rather than a conductor of heat.
Is boron a good conductor of heat?
Yes it is but it is not good for electricity!!
Is phosphate a good conductor of heat?
Phosphate is not a good conductor of heat. It is actually a poor conductor of heat due to its molecular structure, which hinders the transfer of heat energy. This property makes phosphate a good insulator rather than a conductor of heat.
Is milk a good heat conductor?
No, milk is not a good conductor.
Why is aluminum the worst heat conductor?
Aluminium is a good conductor of heat.
Is coal a conductor?
Coal is not a good conductor of electricity due to its high resistance. It is classified as a poor conductor due to the way its atoms are structured, which inhibits the flow of electrons.
Is calcium a good conductor of electricity and heat?
Yes, calcium is a good conductor of heat and electricity. Most metals are good conductors of heat and electricity. Most nonmetals are not good conductors of heat and electricity.
What is a good heat conductor?
Copper and aluminum. Most heat sinks are made of Aluminum (cheap and a good conductor of heat).
If something is conductor of heat does it lose heat fast or slow?
If something is a good conductor of heat, it will lose heat faster than a poor conductor. This is because a good conductor allows heat to flow through it quickly, dispersing the heat energy more rapidly.
Is iron good conductor of heat?
Iron is a very good conductor of heat. and it rusts it goes red
Sulfur a good conductor of heat?
No, sulphur is not a good conductor of heat its crystals may conduct a very small amount of heat.
