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On the optimization of boiler efficiency using bagasse as fuel

机译：以蔗渣为燃料的锅炉效率优化

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The present investigation has been carried out in order to increase the efficiency of the RETAL-type boiler, used in the Cuban sugar mills. Test methods generally used in the evaluation process and further adjustment of the boilers operation have been analyzed, pointing the attention on the importance of the stoichiometric ratio and steam power on the overall efficiency. Important general rules have been extracted from the complete regular tests following ASME and GOST methodologies, and, as a result, a simplified test code has been obtained. Boiler design optimization has also been achieved determining the optimum waste heat recovery scheme from both, thermal and economical viewpoints. As a result, the optimal stack gas temperature has been calculated as well as the range of the optimal value for the excess air fraction. Their influence on the efficiency has been analyzed and the total costs determined. Once the total costs are included in the analysis, the most efficient low-temperature heat recovery scheme results to be the combination of an economizer followed, in the direction of the exhaust gas flow, by an air heater.
机译：为了提高古巴制糖厂使用的RETAL型锅炉的效率，已经进行了本研究。分析了评估过程中常用的测试方法以及锅炉运行的进一步调整，指出了化学计量比和蒸汽功率对整体效率的重要性。从遵循ASME和GOST方法论的完整常规测试中提取了重要的一般规则，结果，获得了简化的测试代码。从热学和经济角度来看，锅炉设计的优化也已经确定最佳的废热回收方案。结果，已经计算出最佳烟道气温度以及过量空气分数的最佳值范围。分析了它们对效率的影响并确定了总成本。一旦将总成本包括在分析中，最有效的低温热回收方案就是节煤器的组合，然后在废气流的方向上，通过空气加热器。

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