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为了解三角形和平板式两种流道构型芯体综合性能的相对优势及两者相对较佳运行工况,根据工程传热传质计算方法,对比与分析了两种芯体在不同层高及运行工况下综合性能的差异。结果表明:随层高变化,两种芯体能效比曲线有交叉且存在峰值,交叉点对应层高约为4.5 mm;风量增大,两种芯体能效比均降低且三角形流道芯体能效比小于平板式;相同工况下,三角形流道芯体能量回收量大于平板式;两种芯体存在相对较佳运行新风与排风温差范围,温差大于约7℃时,三角形流道芯体相对平板式运行性能较佳。设计与选型时应综合考虑两种芯体的性能特点,合理选择流道构型。
In order to understand the relative merits of the two kinds of flow channel configuration cores in triangle and plate and their relatively better operating conditions, according to the calculation method of heat and mass transfer in engineering, Differences in overall performance under operating conditions. The results show that the energy efficiency curves of the two kinds of cores cross with peak values and the corresponding layer height of crossings is about 4.5 mm. With the increase of air volume, the energy efficiency ratio of both cores decreases and the energy efficiency ratio of triangular runner cores The energy recovery of the triangular runner core is larger than that of the flat plate. Under the same conditions, the energy recovery amount of the triangular runner core is larger than that of the flat plate. When the temperature difference is greater than about 7 ° C, the triangular runner core Relatively flat running performance is better. Design and selection should be considered when considering the performance characteristics of both cores, a reasonable choice of flow channel configuration.