빌트인 냉장고의 적정 후면 방열 공간 제안을 위한 수치 시뮬레이션 연구

Abstract

The penetration of refrigerators is increasing and the energy consumed by refrigerators is increasing. Most studies on energy conservation in refrigerators focus only on factors that have the greatest impact, and only on built-in refrigerators with natural convection methods. Recently, however, refrigerators have been forced to convect using cooling fans. In addition, unlike ordinary refrigerators, the back heat dissipation space is more important because the left and right heat dissipation spaces are limited. Therefore, in order to save energy consumed in built-in refrigerators, this paper proposes an appropriate back heat dissipation space. The paper consists of experiments and numerical simulations. Physical phenomena were identified by experiment and data necessary for numerical simulation were collected. As a result of the experiment, refrigerator operation time was 465 seconds and electricity consumption was reduced by 6 W during one cycle. In the case of integrated power consumption, 290 Wh can be saved. According to numerical simulation, appropriate rear heat dissipation space is proposed for refrigerators for 1~2 people and refrigerators for 3~4 people. According to numerical simulations, the appropriate back heat dissipation space for ‘refrigerators for 1~2 people’ is 9 cm, and the appropriate back heat dissipation space for ‘refrigerators for 3~4 people’ is 10 cm.