An air to liquid heat exchanger having a tapered fin and tube block

摘要

An air to liquid heat exchanger is disclosed having a fin and tube block 115 having a number of airflow passages through which air to be cooled passes. The air inlet side of the block has a grater air flow area than the area of the air flow at the air outlet. The arrangement results in a trapezoidal shape of the heat exchanger which is produced by using non-uniform flow area airflow passages that taper from an inlet end to an outlet end. By using such non-uniform flow area passages, the heat exchanger can be optimised in terms of package size, pressure drop and heat transfer efficiency to suit a particular application.