Abstract
The development direction of miniaturization and low noise of electronic equipment in nuclear power plant puts forward higher requirements for radiators. Two experimental systems were constructed to test the volume, noise and heat transfer performance of air-cooled radiator and micro-pump-driven water-cooled micro-channel radiator that can be applied to electronic equipment of nuclear power plant. The experimental results show that the comprehensive performance of micro-pump-driven water-cooled micro-channel radiator is better than that of the air-cooled radiator. Compared with the air-cooled radiator, the micro-pump-driven water-cooled micro-channel radiator can reduce the temperature rise of heat source by more than 20°C, and the volume is only 38% of the air-cooled radiator. For the micro-channel using in the present study, the flow rate of cooling water is the main factor which affects the heat transfer performance of radiator when the flow rate of cooling water is lower than 2.5L/min. However, when the flow rate of cooling water is more than 2.5L/min, the increase of cooling water flow rate has little impact on heat transfer performance, and the self-structure of the radiator and thermal resistance have become the main factors restricting the improvement of heat transfer performance.
