Poly-generation system with waste heat of low-temperature flue gas in power plants based on organic Rankine cycle

[Display omitted] •The CuxCo@NC bimetallic catalysts were prepared by dual-regulation strategy.•The CuxCo@NC catalysts exhibited significant Mott-Schottky effect.•The electronic structure of metallic Co was modulated by Cu and N-doping.•The CuxCo@NC catalysts presented good semi-hydrogenation of phe...

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Bibliographic Details
Published in:Applied thermal engineering 2024-04, Vol.242, p.122513, Article 122513
Main Authors: Wang, Tong, Zhou, Tuo, Feng, Yupeng, Zhang, Man, Zhu, Shahong, Yang, Hairui
Format: Article
Language:English
Subjects:
Aspen Plus
Low-grade waste heat
Organic Rankine Cycle
Poly-generation system
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Summary:[Display omitted] •The CuxCo@NC bimetallic catalysts were prepared by dual-regulation strategy.•The CuxCo@NC catalysts exhibited significant Mott-Schottky effect.•The electronic structure of metallic Co was modulated by Cu and N-doping.•The CuxCo@NC catalysts presented good semi-hydrogenation of phenylacetylene. Besides fossil energy and water resources, waste heat resources have attracted more and more attention because of their wide distribution and large quantity. This paper studies a system using low-grade waste heat emitted in a coal-fired power plants as the heat source, which coupled with low-temperature organic Rankine cycle (ORC), humidification and dehumidification and desalting system (HDH) and desiccanting cooling system (DCS) with different heat recovery system strategies, aiming at using low-temperature waste heat for power generation, desalting saline wastewater/sea water and providing space cooling for residential systems. The influences of control parameters on system productivity and system performance index were studied. In addition, the effects of different ORC working media on optimal system performance were also studied and discussed. Condenser exergy loss decreased by about 33% compared to an independent ORC system. In the range of control parameters studied, the total gain output of the poly-generation system was increased by about 47% compared to that of the independent system. The system is more productive when using n-Octane and Toluene, and has the highest system performance indicators when using R245fa and R113.
ISSN:1359-4311
DOI:10.1016/j.applthermaleng.2024.122513