[Waldo]

Originally Posted by ZeroGara

My scientific question that I have found no answer yet is why wouldn't mercury be a good coolant. It sure doesn't boil easy, it can hold and transfer heat faster than water. It would expand beyond the practical use on a bike. It is toxic to leak. It is heavy, it is expensive, and it is harder to circulate. But in a laboratory, would it be an efficient coolant?

The Russians built a couple sub with mercury as a coolant for the reactor. Most are on the bottom now. Cooling was not the problem but keeping the mercury in the lines was.