In this study, a parametric advanced exergy analysis was conducted for the waste heat recovery of a pulverized coal-fired power plant. In this aim, a new attainable ideal and the technically available unavoidable case for the combustion process were identified. Under the identified improved potential term, different unavoidable cases were parametrically investigated for the hybrid dewatering and air preheating process to improve the combustion process. In this aim, different removed moisture contents, air preheating conditions, and effectiveness of both internal and external heat exchangers were thermodynamically evaluated in terms of the combustion process. The improved potential was calculated as 74.4% for the whole combustion system. The critical moisture removal ratio was calculated as 20%. The effects of rehabilitation on improved potential were found as 2.80 points per 1% of effectiveness increase for the self (internal) heat exchangers of the boiler, 1.68 points per 1% of effectiveness increase for HE-I and HE-II (external heat exchangers), and 0.62 points per 1% increase of dewatered moisture ratio. Besides, a saving of about 29.54% was determined in fuel consumption for the most appropriate unavoidable condition.

在这项研究中，对粉煤电厂的余热回收进行了参数高级火用分析。为此，确定了燃烧过程的新的可达到的理想和技术上不可避免的情况。在确定的改进的潜在条件下，对混合脱水和空气预热过程进行了参数化研究，研究了各种不可避免的情况，以改善燃烧过程。为此目的，根据燃烧过程进行了热力学评估，得出了不同的去除水分含量，空气预热条件以及内部和外部热交换器的效率。计算出整个燃烧系统的改进潜力为74.4％。临界水分去除率计算为20％。康复对提高潜力的影响发现，锅炉自身（内部）换热器每提高1％效率可提高2.80分，HE-1和HE-II（外部换热器每提高1％效率可提高1.68分），每增加1％的脱水水分率，便获得0.62点。此外，在最合适的不可避免条件下，节省了约29.54％的燃油。