Heat Transfer Efficiency Research On 600kW Cooler

Higher energy consumption per unit GDP in China facilitated the energy conservation and emission reduction. Heat exchanger is a device transferring heat between fluid or solid with different temperature, it is used for satisfying processing condition, meanwhile, it is one of the main efficiency and energy conservation devices.F-type cooler in this paper is difficult to reach 600 kW capacity without increase of power consumption or noise level. The main parts of the tube and fin heat exchanger include fan unit, tubes and fin. Research on enhanced fin is considered more important since heat resistance between fin and air comes to 70% overall.In this paper, 2D fin model was built with Gambit then analyzed in fluent to get the performance of pressure drop j/f^1/2 and j/f heat transfer coefficient corresponding to face velocity, comprehensive assessment factor and were utilized for evaluating different heat transfer performance of fin, then research method based on fin section was implemented for studying detail performance of each kind of fin area to understand why air pressure drop and heat transfer performance vary. Louvered fin has the highest air pressure drop but best heat transfer coefficient, flat fin has the lowest air pressure drop while the worst heat transfer coefficient, the comprehensive factors of pyramid fin is the highest among six fin models. A comparison test was conducted to verify the performance of wave fin and pyramid fin, also a type test was implemented to verify 600 kW capacity of P-type cooler.P-type cooler made of pyramid fin which was evaluated as the most efficiency fin type by numerical analysis, raises 15% percent higher capacity compared to F-type cooler with same fan noise and pump power consumption, it provides a feasible and economical way to manufacture 600 kW cooler.