Numerical Simulations of a Micro-Channel Wall-Tube Condenser for Domestic Refrigerators

• 作 者: 张会勇 李俊明 李红旗
• 机 构: Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Ther
• 出 处: Tsinghua Science and Technology
• 发表日期: 2004年期
• 关键词: conditioning diameters outer conduction downward installed convection outlet spa

In recent years, microchannel heat exchangers have begun to be used in refrigeration and air conditioning systems. This paper introduces a microchannel condenser for domestic refrigerators with a theoretical model to evaluate its performance. The model was used to obtain the optimal design parameters for different numbers of tubes and tube lengths. The results show that the needed tube height of the down-ward section decreases with the number of tubes and the tube diameter. Compared with the original con-denser, the present optimal design parameters can reduce the total metal mass by 48.6% for the two wall two side design and by 26% for the two wall one side design. Thus, the present condenser is much better than the condensers usually used in actual domestic refrigerators.

The recent years, microchannel heat exchangers have begun to be used in refrigeration and air conditioning systems. This paper was a refrigerated condenser with a theoretical model to evaluate its performance. The model was used to obtain the optimal design parameters for different numbers of tubes and tube lengths. The results show that the needed tube height of the down-ward section decreases with the number of tubes and the tube diameter. Compared with the original con-denser, the present optimal design parameters can reduce the total metal mass by 48.6% for the two wall two side design and by 26% for the two wall one side design. by 26% for the two wall one side design.