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Exergy and exergoeconomic assessments of an electricity production system in a running wastewater treatment plant

机译:运行中的废水处理厂的电力生产系统的能值和能效评估

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This study aims at presenting a detailed exergy and exergoeconomic analyses of a biogas engine powered electricity production system in a wastewater treatment plant located in Adana, Turkey. The overall system consists of a compressor, a turbine, a pump, four heat exchangers and a gas engine. The effect of the each system component on the exergy efficiency and exergoeconomic parameters is analyzed separately. The analysis indicates that major exergy destruction happens in the gas engine as 4055.31 kW, followed by the exhaust gas heat exchanger (EGHE) and lubrication oil heat exchanger (LOHE) as 99.86 kW and 92.64 kW, respectively. The second law efficiency of the compressor, turbine, pump, BGHE, LOHE, WHE, EGHE and gas engine are found as 76.50%, 78.43%, 6.49%, 13.40%, 11.56%, 60.44%, 67.36%, and 50.79%, respectively. The operating and maintenance costs, capital investment cost and total cost of the system are reckoned as 14.74 US$/h, 13.90 US$/h, and 28.64 US$/h, respectively to point out the exergoeconomic performance. The unit exergy cost and exergy cost of the fuel, which feeds the compressor, are reckoned as 4.88 US$/GJ and 141.12 US$/h. The exergy cost and electricity production unit exergy cost in the turbine are found as 4.87 US$/h and 11.32 US$/GJ. (C) 2016 Elsevier Ltd. All rights reserved.
机译:这项研究的目的是对位于土耳其阿达纳的废水处理厂中以沼气发动机为动力的电力生产系统进行详细的火用和能源经济分析。整个系统由压缩机,涡轮机,泵,四个热交换器和燃气发动机组成。分别分析了每个系统组件对火用效率和火用经济参数的影响。分析表明,燃气发动机发生的主要火用破坏为4055.31 kW,其次是废气热交换器(EGHE)和润滑油热交换器(LOHE)分别为99.86 kW和92.64 kW。压缩机,涡轮机,泵,BGHE,LOHE,WHE,EGHE和燃气发动机的第二定律效率分别为76.50%,78.43%,6.49%,13.40%,11.56%,60.44%,67.36%和50.79%,分别。该系统的运行和维护成本,资本投资成本和总成本分别为14.74美元/小时,13.90美元/小时和28.64美元/小时,以指出系统的经济性能。供给压缩机的燃料的单位火用成本和火用成本分别为4.88美元/吉焦和141.12美元/小时。涡轮的火用成本和电力生产单位的火用成本分别为4.87美元/小时和11.32美元/吉焦。 (C)2016 Elsevier Ltd.保留所有权利。

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