Water is actually a good conductor of heat compared to gases, but not as effective as metals. However, it's still used as a coolant due to its high specific heat capacity, which allows it to absorb large amounts of heat energy without a significant temperature increase. It's also readily available and cost-effective for many applications.
Yujiro_hunma t1_jbgv54m wrote
Reply to Why is water used as coolant since it is a poor conductor of heat? by Red_Panagiotis
Water is actually a good conductor of heat compared to gases, but not as effective as metals. However, it's still used as a coolant due to its high specific heat capacity, which allows it to absorb large amounts of heat energy without a significant temperature increase. It's also readily available and cost-effective for many applications.