新风系统全热交换芯体风道结构优化研究

Study on Optimization of Air Duct Structure of Total Heat Exchange Core in Fresh Air System

为了进一步提升全热交换芯体的热交换效率,文章就新风系统全热交换芯体风道结构优化展开了研究,旨在为全热交换芯体新型流道结构的优化设计提供理论基础。结果表明,与原方案相比,各改进方案的热交换性能均有一定程度的提升,其中直流道全热交换芯体的热交换性能最优;热交换面积的增大有利于焓效率的提升,但停滞层液相的聚集对全热交换芯体性能有不利影响,流道数目对全热交换芯热交换性能有一定的影响。

In order to further improve the heat exchange efficiency of the total heat exchange core,the optimization of the air passage structure of the total heat exchange core in the fresh air system is studied in this paper,aiming at providing theoretical basis for the optimal design of the new flow passage structure of total heat exchange core.It is showed that the heat exchange performance of each improved scheme is improved to a certain extent compared with the original scheme,among which the heat exchange performance of the full heat exchange core in direct current channel is the best.The increase of heat exchange area is conducive to the improvement of enthalpy efficiency,but the accumulation of liquid phase in the stagnation layer has a negative effect on the performance of the total heat exchange core,and the number of flow channels has a certain effect on the performance of the total heat exchange core.