一侧流体混合、一侧流体不混合叉流换热器的平均温差的实验研究

• 作 者: 陈焕倬 江淑琴 王幼纯 陈素萍 张伯鹏 陈小权
• 机 构: 中国科学院工程热物理研究所,中国科学院工程热物理研究所,中国科学院工程热物理研究所,中国科学院工程热物理研究所,首都钢铁公司,首都钢铁公司
• 出 处: 工程热物理学报
• 发表日期: 1985年02期
• 关键词: 温差修正系数 平均温差 温度分布 总表面积 smith 不均匀性 横向混合 换热系数 总换热量 管流

一、引言 对于一侧流体混合、一侧流体不混合叉流换热器,其平均温差修正系数的理论结果,早在1934年由D.M.Smith导出,并一直沿用至今。本文通过实验证明,在R=1时,实验结果与理论结果大体相符。但是当R<1时,随着R值的减小,实验结果偏离Smith的理论结果,而与W.Nusselt的两侧流体都不混合换热器平均温差的理论结果接近。实

I. INTRODUCTION As for the fluid mixing on one side, the theory that the fluid on one side is not mixed with the cross-flow heat exchanger and whose average temperature difference correction coefficient is theoretically derived by D.M. Smith in 1934 has been used till now. In this paper, experiments show that at R = 1, the experimental results are in good agreement with the theoretical results. However, when R <1, the experimental results deviate from the theoretical results of Smith with the decrease of R value, which is close to the theoretical result that the fluid on either side of W.Nusselt is not mixed with the average temperature difference of the heat exchanger. real