Experimental study of operating performance of a tube-and-fin radiator forvehicles

In this paper, an experimental study of the heat transfer characteristics o f a tube-and-fin radiator for vehicles is carried out by using an experimen tal optimization design technique on a wind tunnel test rig of the radiator . The regression equations of heat dissipation rate. coolant pressure drop and air pressure drop are developed. The influences of the air velocity. in let coolant temperature and volume flowrate of coolant on heat dissipation rate, coolant pressure drop and air pressure drop are discussed in detail b y means of the numerical analyses. Also, the research results provide a bas is for the theoretical analysis of heat performances and structural refinem ent of the tube-and-fin radiator.