Question

explain the role of water as a coolant

Answer 1

water is used as coolant because it has high specific heat,and radiators in the cars need coolant for long time ,so we use water ,water hv high specific heat capacity so it can be for long time
    so water water plays a crucial role in cars

Answer 2

The most common coolant is water. Its high heat capacity and low cost makes it a suitable heat-transfer medium. It is usually used with additives, like corrosion inhibitors and antifreeze. ... Heavy water is a neutron moderator used in some nuclear reactors; it also has a secondary function as their coolant.