Design of AL Heat Sink for Water Purifier Cooling System using Unitized Thermoelectric Modules

Delay in cooling and temperature control failure occurs owing to the thermal dissipation issues in a product during mass production. Hence, a comparative evaluation of cooling performance was conducted on four types of heat sinks: the initially applied foreign heat sink (No. 2), domestically produced heat sink that experienced cooling deficiencies during mass production (No. 1), and two newly designed heat sinks (No. 3 and 4). No. 3 and 4 were modified by adjusting the spacing and length of the fins through slight changes in fin height, thickness, and number, resulting in variation in weight compared to that of No. 2. This helped in identifying the issues in No. 1. The two newly designed heat sinks demonstrated excellent cooling performance and weight reduction of approximately 10% compared to that of No. 2. Ultimately, No. 4 was selected as the final production model.