Radiator is an important component of diesel generator cooling system, and its heat dissipation ability determines the effect of cooling system to a large extent. It is a heat exchange device to eliminate the high heat that occurs in the long running of the machine, so as to prevent the generator from overheating and causing faults, and ensure that the engine works continuously in the normal temperature range. The principle of radiator is to use the cooling liquid to lose heat energy to work, in order to ensure the proper temperature of the internal combustion engine, the cooling water to lose heat energy is indispensable. Normally, the water pump driven by the engine circulates the cooling water to all parts of the engine. The coolant absorbs the heat generated by the engine and releases it into the air.

Basic structure: radiator by water chamber, water chamber, radiator core, etc. When choosing the material, main consideration is the following should be considered :heat transfer performance is good, corrosion resistance is strong, have enough strength, have good brazing performance, easy processing molding and good economy. The basic performance of the radiator is characterized by the various temperatures and heat before and after the heat exchange between the air of the low-temperature fluid and the water of the high-temperature fluid. It is determined by the temperature of the air and water at the entrance of the radiator, the whole heat dissipation area of the radiator, the heat transfer rate, the temperature of the fluid (air, water) when the heat is absorbed by the air, the temperature of the heat released by the water, and the heat released by the water (the heat absorbed by the air). The heat release and the required target temperature is the basis of determining the basic performance of the radiator.