化工学报2001，Vol.52Issue(3)：257-261,5.
汽-水换热器内流体诱导振动强化传热试验
EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER ENHANCEMENT BY FLOW INDUCED VIBRATION IN STEAM-WATER HEAT EXCHANGERS
摘要
Abstract
A new concept of the compound heat transfer augmentation by flow-induced vibration was put forward in steam-water heat exchangers. The vibration of heat transfer surface can increase the heat transfer coefficient.In the meantime, the vibration of the tubes can also remove the fouling adhered to the tube surface easily, and therefore, the fouling thermal resistance can be decreased. Experiments were carried out on the vibration and heat transfer characteristics of the elastic tube bundles used in steam-water heat exchanger. Experimental results showed that the tube bundles vibrated mainly at its lower natural frequencies in crossflow, whereas, for the in-tube flow, they vibrated randomly at a wide range of frequencies. Experiments of heat transfer characteristics revealed that the convective heat transfer coefficient of the outside tube was greatly raised while that of the inside tube rose slightly. Generally, the outside average convective heat transfer coefficient for the elastic tube bundles is five times that of the fixed tube bundles at the same Re.The mechanism of reduction of fouling thermal resistance has been analyzed.关键词
换热器/流体诱导振动/强化传热/污垢分类
能源科技引用本文复制引用
田茂诚,林颐清,程林,张冠敏,周强泰..汽-水换热器内流体诱导振动强化传热试验[J].化工学报,2001,52(3):257-261,5.基金项目
山东省青年科学家奖励基金资助项目. （）
