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PIV 계측 및 수치해석 기법을 이용한 고효율 냉장고 설계
남영석(Young-Sok Nam),조성호(Sung-Ho Cho),최제호(Jayho Choi),이인섭(In-Seop Lee) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
A PIV measurement and numerical analysis of the flow inside the refrigeration compartment was conducted to increase the refrigerator performance. This study was especially focused on temperature uniformity and cooling speed performance. 2D PlY and stereoscopic PlY were used for the experiments on an actual-size operating refrigerator. The flow patterns inside the shelves and door baskets were measured by 2D PIV and the flow-rates at cooling duct outlets were measured by stereoscopic PlY. For numerical analysis, commercial software was used. 320,000 structured grid systems made with body fitted coordinate and the standard k-ε turbulence model were used for numerical analysis. Numerical analysis was used to calculate velocity vectors and temperature distributions inside cooling ducts and the refrigeration compartment as a whole. The new cooling system developed with the results of this analysis, cooled the door baskets effectively and according to chamber tests, temperature uniformity and cooling speed performance were increased 25%, and 11 %, respectively.
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