Ghema M, El Fadar A, Achkari O B
Laboratory of Innovative Technologies, National School of Applied Sciences of Tangier, Abdelmalek Essaadi University, Tetouan, Morocco.
Laboratory of Innovative Technologies, National School of Applied Sciences of Tangier, Abdelmalek Essaadi University, Tetouan, Morocco.
Sci Total Environ. 2024 Jun 1;927:171983. doi: 10.1016/j.scitotenv.2024.171983. Epub 2024 Apr 2.
The objective of this study is twofold. First, it aims to bridge a significant gap in the existing literature by reviewing the integration of waste heat recovery (WHR) into polygeneration systems. Thus, it scrutinizes the methods and challenges of WHR-based polygeneration systems and explores their energy and economic potential based on data gathered from the literature and using key indicators. Second, it addresses the scarcity of existing studies assessing the environmental impact of these systems. Therefore, an environmental analysis is conducted to evaluate the potential mitigation of greenhouse gas emissions achievable through their implementation. The findings of the study reveal significant energy and exergy efficiencies, varying in the ranges of 20.8 %-96.9 % and 24.1 %-63.6 %, respectively, proving high performance of WHR-based polygeneration systems. Economically, these systems exhibit competitiveness, with short payback periods ranging from 1.4 to 6.7 years, along with average levelized costs of electricity, cooling, and heating of 0.17, 0.37 and 0.13 $/kWh, sequentially. Moreover, the environmental assessment confirmed substantial reductions in greenhouse gas emissions, reaching on average 2.45 kt of carbon dioxide per MW of installed capacity, annually. The study could contribute to raising awareness regarding the energy, economic, and environmental benefits of WHR-based polygeneration systems, thereby fostering the widespread adoption of these sustainable systems.
本研究的目标有两个。首先，旨在通过回顾废热回收（WHR）与多联产系统的整合，弥合现有文献中的重大差距。因此，它仔细研究了基于WHR的多联产系统的方法和挑战，并基于从文献中收集的数据和使用关键指标，探索了它们的能源和经济潜力。其次，它解决了现有研究中评估这些系统环境影响的稀缺性问题。因此，进行了一项环境分析，以评估通过实施这些系统可实现的温室气体排放潜在减排量。该研究的结果显示出显著的能源和㶲效率，分别在20.8% - 96.9%和24.1% - 63.6%的范围内变化，证明了基于WHR的多联产系统的高性能。在经济方面，这些系统具有竞争力，投资回收期短，为1.4至6.7年，同时电力、制冷和供热的平均平准化成本分别为0.17美元/千瓦时、0.37美元/千瓦时和0.13美元/千瓦时。此外，环境评估证实温室气体排放大幅减少，平均每年每兆瓦装机容量可达2.45千吨二氧化碳。该研究有助于提高人们对基于WHR的多联产系统在能源、经济和环境方面益处的认识，从而促进这些可持续系统的广泛采用。
