냉장고 냉매 배관의 열효율 향상을 위한 이종금속(Cu/Al) 접합구조 설계

초록

In this study, a Cu/Al dissimilar metal joint structure using a copper capillary tube and an aluminum suction pipe was proposed to reduce manufacturing cost while maintaining refrigeration performance. The soldering process increased the thermal contact area between the capillary tube and suction pipe, minimizing the temperature difference ( T) and improving evaporator refrigeration capacity. Experimental results showed that Δ the proposed Cu/Al piping structure exhibited refrigeration performance and energy efficiency comparable to those of the conventional Cu/Cu system, while reducing material cost by approximately 50%. Therefore, the proposed structure is considered an effective alternative for achieving both cost competitiveness and energy efficiency in refrigeration and air-conditioning systems and is expected to contribute to the development of next-generation eco-friendly high-efficiency refrigeration components.

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