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Energy savings by co-production: A methanol/electricity case study


  • Liu, Guang-jian
  • Li, Zheng
  • Wang, Ming-hua
  • Ni, Wei-dou


The overall exergy losses of co-production systems were decomposed into five sub-systems: chemical reaction processes, heat exchange processes, external exergy losses, turbine/mechanical exergy losses and others. By defining new parameters called energy-saving factors, we quantitatively describe the contribution of these processes to the overall energy savings relative to separate production systems. A methanol/electricity co-production system is taken as case study, results show that heat exchange processes are the main contribution to the energy savings.

Suggested Citation

  • Liu, Guang-jian & Li, Zheng & Wang, Ming-hua & Ni, Wei-dou, 2010. "Energy savings by co-production: A methanol/electricity case study," Applied Energy, Elsevier, pages 2854-2859.
  • Handle: RePEc:eee:appene:v:87:y:2010:i:9:p:2854-2859

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    References listed on IDEAS

    1. Hetland, Jens & Zheng, Li & Shisen, Xu, 2009. "How polygeneration schemes may develop under an advanced clean fossil fuel strategy under a joint sino-European initiative," Applied Energy, Elsevier, vol. 86(2), pages 219-229, February.
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    Cited by:

    1. Narvaez, A. & Chadwick, D. & Kershenbaum, L., 2014. "Small-medium scale polygeneration systems: Methanol and power production," Applied Energy, Elsevier, vol. 113(C), pages 1109-1117.
    2. Wolfersdorf, Christian & Boblenz, Kristin & Pardemann, Robert & Meyer, Bernd, 2015. "Syngas-based annex concepts for chemical energy storage and improving flexibility of pulverized coal combustion power plants," Applied Energy, Elsevier, vol. 156(C), pages 618-627.
    3. Pellegrini, Laura A. & Soave, Giorgio & Gamba, Simone & Langè, Stefano, 2011. "Economic analysis of a combined energy–methanol production plant," Applied Energy, Elsevier, vol. 88(12), pages 4891-4897.
    4. He, Chang & Feng, Xiao, 2012. "Evaluation indicators for energy-chemical systems with multi-feed and multi-product," Energy, Elsevier, vol. 43(1), pages 344-354.
    5. James, Olusola O. & Chowdhury, Biswajit & Auroux, Aline & Maity, Sudip, 2013. "Low CO2 selective iron based Fischer–Tropsch catalysts for coal based polygeneration," Applied Energy, Elsevier, vol. 107(C), pages 377-383.
    6. Janesh Sami, 2011. "Multivariate Cointegration and Causality between Exports, Electricity Consumption and Real Income per Capita: Recent Evidence from Japan," International Journal of Energy Economics and Policy, Econjournals, vol. 1(3), pages 59-68, November.
    7. Xiang, Dong & Qian, Yu & Man, Yi & Yang, Siyu, 2014. "Techno-economic analysis of the coal-to-olefins process in comparison with the oil-to-olefins process," Applied Energy, Elsevier, vol. 113(C), pages 639-647.
    8. Yang, Siyu & Yang, Qingchun & Qian, Yu, 2013. "A composite efficiency metrics for evaluation of resource and energy utilization," Energy, Elsevier, vol. 61(C), pages 455-462.
    9. Guo, Zhihang & Wang, Qinhui & Fang, Mengxiang & Luo, Zhongyang & Cen, Kefa, 2014. "Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant," Applied Energy, Elsevier, vol. 113(C), pages 1301-1314.
    10. Su, Li-Wang & Li, Xiang-Rong & Sun, Zuo-Yu, 2013. "The consumption, production and transportation of methanol in China: A review," Energy Policy, Elsevier, vol. 63(C), pages 130-138.


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