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Industrial waste heat utilization for low temperature district heating

Author

Listed:
  • Fang, Hao
  • Xia, Jianjun
  • Zhu, Kan
  • Su, Yingbo
  • Jiang, Yi

Abstract

Large quantities of low grade waste heat are discharged into the environment, mostly via water evaporation, during industrial processes. Putting this industrial waste heat to productive use can reduce fossil fuel usage as well as CO2 emissions and water dissipation. The purpose of this paper is to propose a holistic approach to the integrated and efficient utilization of low-grade industrial waste heat. Recovering industrial waste heat for use in district heating (DH) can increase the efficiency of the industrial sector and the DH system, in a cost-efficient way defined by the index of investment vs. carbon reduction (ICR). Furthermore, low temperature DH network greatly benefits the recovery rate of industrial waste heat. Based on data analysis and in-situ investigations, this paper discusses the potential for the implementation of such an approach in northern China, where conventional heat sources for DH are insufficient. The universal design approach to industrial-waste-heat based DH is proposed. Through a demonstration project, this approach is introduced in detail. This study finds three advantages to this approach: (1) improvement of the thermal energy efficiency of industrial factories; (2) more cost-efficient than the traditional heating mode; and (3) CO2 and pollutant emission reduction as well as water conservation.

Suggested Citation

  • Fang, Hao & Xia, Jianjun & Zhu, Kan & Su, Yingbo & Jiang, Yi, 2013. "Industrial waste heat utilization for low temperature district heating," Energy Policy, Elsevier, vol. 62(C), pages 236-246.
    • Handle: RePEc:eee:enepol:v:62:y:2013:i:c:p:236-246
    DOI: 10.1016/j.enpol.2013.06.104
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    References listed on IDEAS

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    1. Anish Patil & Austine Ajah & Paulien Herder, 2009. "Recycling industrial waste heat for sustainable district heating: a multi-actor perspective," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 10(3/4), pages 412-426.
    2. McKenna, R.C. & Norman, J.B., 2010. "Spatial modelling of industrial heat loads and recovery potentials in the UK," Energy Policy, Elsevier, vol. 38(10), pages 5878-5891, October.
    3. Li, Hongwei & Svendsen, Svend, 2012. "Energy and exergy analysis of low temperature district heating network," Energy, Elsevier, vol. 45(1), pages 237-246.
    4. Svensson, Inger-Lise & Jönsson, Johanna & Berntsson, Thore & Moshfegh, Bahram, 2008. "Excess heat from kraft pulp mills: Trade-offs between internal and external use in the case of Sweden--Part 1: Methodology," Energy Policy, Elsevier, vol. 36(11), pages 4178-4185, November.
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