Can water be used as coolant?
1 Answers
Temporarily unable to find the same type of coolant? A small amount of purified water can be used as a substitute. Coolant consists of three components: water, antifreeze, and additives. It circulates in the engine cooling system, carrying away excess heat generated during engine operation to ensure the engine operates at normal working temperature. The functions of coolant include the following four points: 1. Winter antifreeze: To prevent the coolant from freezing after the car is parked in winter, which could cause the radiator and engine block to crack, the freezing point of the coolant should be about 10°C lower than the lowest temperature in the region to prepare for sudden weather changes; 2. Anti-corrosion: The radiator, water pump, cylinder block, cylinder head, water distribution pipe, and other components in the cooling system are made of steel, cast iron, brass, copper, aluminum, solder, and other metals. Due to the different electrode potentials of different metals, electrochemical corrosion can easily occur under the action of electrolytes. At the same time, the acidic products formed after the decomposition of glycol substances in the coolant and the acidic exhaust gas after fuel combustion may also penetrate into the cooling system, promoting corrosion of the cooling system; 3. Anti-scaling: The coolant should minimize the formation of scale during circulation to avoid clogging the circulation pipes and affecting the heat dissipation function of the cooling system; 4. Anti-boiling: The boiling point of coolant is usually over 105°C, compared to the boiling point of water at 100°C. Coolant can withstand higher temperatures without boiling (overheating), meeting the cooling needs of high-load engines to a certain extent.
