ABSTRACT

A novel regenerative heat exchanger was designed and fabricated for heat recovery of dryer flue gases with a high porosity matrix core that was made of alumina foams. The effects of matrix height, matrix linear speed, and flow rate on thermal effectiveness were investigated based on an L25 Taguchi model. Results show that the matrix height and flow rate are inversely related and the matrix speed is directly related to the thermal effectiveness. Finally, the highest thermal effectiveness, thermal improvement of the dryer, air preheating rate, and the number of transfer units were 31.75%, 27.13%, 186.42%, and 0.4652, respectively.

中文翻译：

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用于烟气余热回收的新型高孔隙率陶瓷基蓄热式换热器的稳健设计

摘要

设计和制造了一种新型蓄热式热交换器，用于干燥器烟气的热回收，其具有由氧化铝泡沫制成的高孔隙率基体芯。基于 L25 Taguchi 模型研究了基质高度、基质线速度和流速对热效率的影响。结果表明，基质高度与流速成反比，基质速度与热效率直接相关。最后，最高的热效率、干燥机的热改进、空气预热率和传输单元数分别为31.75%、27.13%、186.42%和0.4652。