Abstract
AbstractGood heat dissipation is highly significant for long-term reliable functioning of a junction box (JB) for a cable ocean observatory network. An innovative heat dissipation system consisting of circumferentially equi-spaced chassis heat sinks and an adaptive elastic support structure is proposed based on the analysis of the cooling mechanism of the JB. A temperature field model of the JB is established. The parameters include seawater pressure, precision of machine workpieces, seawater flow rate, and thermal contact resistance. A 3D dynamic simulation of heat dissipation is conducted using the commercial software ANSYS to describe the temperature field inside the JB. The proposed heat dissipation system is applied and tested on a laboratory setup of the Experimental Underwater Observatory Network System of China. Experimental results agree well with the theoretical model and simulated results. The increase in maximum temperature in the JB is between 7°C and 10°C under different sea conditions.
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