Cooling System Design Requirements
The primary purpose of the engine cooling system is to reject heat from the jacket water coolant and auxiliary circuit if equipped, at greatest engine load, highest ambient temperature, and altitude. This section will outline the proper methods to be used for cooling system sizing.
Heat Rejection
Before a cooling system can be designed, the designer must understand how much heat is being rejected through each of the cooling circuits. This information is available in the
Technical Marketing Information (TMI), and on the Engine technical data sheets available for each engine model. The following guide will help the designer in interpreting and applying the heat rejection data.
The heat balance: The heat input into the engine equals the sum of the heat and work outputs. This equation is typically applied with all factors either in kW or Btu/min units.