So the next time the engine starts with cold coolant, the coolant level in the radiator is low. In older vehicles without a coolant recovery tank, the excess coolant gets dumped onto the pavement and is lost forever. Once cooling system pressure exceeds the cap rating, the cap releases coolant until pressure falls to less than the cap rating. Traditional radiators use a radiator cap that holds pressure until it reaches its preset pressure threshold. Two types of coolant recovery tanks pressurized and un-pressurized Above 40☏ it acts like all other liquids and expands with as it heats. As the ice warms from freezing 32☏ to 40☏, it shrinks. As water cools from 40☏ to 32☏ (freezing) it expands as the water molecules crystalize and turns into ice. It expands when heated and contracts when cold-but not at all temperatures. They’ve heard that water reacts the opposite way of all other liquids.
They assume that since water expands as it freezes that it can’t possibly also expand as it heats. The people who say water doesn’t expand as it heats really don’t understand the unique thermal properties of water (engine coolant is approximately 50% water). The confusion about whether coolant expandsĭespite what other “experts” have stated, engine coolant does in deed expand as it heats up-all liquids do.
0 kommentar(er)
