Experimental study for heat transfer enhancement of oil cooler

The heat transfer experimental study for three integral pin-fin tube oil coolers is performed. The experimental results indicate that for the same oil mass flow rate, when the tube number of pin-fin tube oil cooler is half that of smooth tube, the heat transfer coefficient of pin-fin tube oil cooler is 2.2 times that of bar tube. The experimental results indicate that the pin-fin tube oil cooler is of less tube plate and better heat transfer characteristics. (authors)