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Heat recovery from air in underground transport tunnels

Author

Listed:
  • Ninikas, Konstantinos
  • Hytiris, Nicholas
  • Emmanuel, Rohinton
  • Aaen, Bjorn
  • Younger, Paul L.

Abstract

The performance of a typical air source heat pump could be increased dramatically by a relatively stable air temperature with a high humidity, even during the peak heating months. In this short communication we show such conditions exist in the underground transport tunnels of the Glasgow Subway system, where we had conducted an annual survey of air flow, air temperature and relative humidity at thirty different points within the subway network. We found relatively stable temperatures and sufficient air movement inside the twin tunnels (average temperature during winter = 15 °C, annual variation = 2.6 °C; average air flow = 16.47 m3/h) indicating higher system efficiency compared to a conventional air source heat pump installation. Potential energy and carbon savings are discussed.

Suggested Citation

  • Ninikas, Konstantinos & Hytiris, Nicholas & Emmanuel, Rohinton & Aaen, Bjorn & Younger, Paul L., 2016. "Heat recovery from air in underground transport tunnels," Renewable Energy, Elsevier, vol. 96(PA), pages 843-849.
    • Handle: RePEc:eee:renene:v:96:y:2016:i:pa:p:843-849
    DOI: 10.1016/j.renene.2016.05.015
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    Citations

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    Cited by:

    1. Konstantinos Ninikas & Nicholas Hytiris & Rohinton Emmanuel & Bjorn Aaen, 2019. "The Performance of an ASHP System Using Waste Air to Recover Heat Energy in a Subway System," Clean Technol., MDPI, vol. 1(1), pages 1-10, July.
    2. Yu, Yanzhe & You, Shijun & Zhang, Huan & Ye, Tianzhen & Wang, Yaran & Wei, Shen, 2021. "A review on available energy saving strategies for heating, ventilation and air conditioning in underground metro stations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 141(C).
    3. Agata Ołtarzewska & Dorota Anna Krawczyk, 2021. "Simulation of the Use of Ground and Air Source Heat Pumps in Different Climatic Conditions on the Example of Selected Cities: Warsaw, Madrid, Riga, and Rome," Energies, MDPI, vol. 14(20), pages 1-11, October.
    4. Tong, Li & Liu, Nan & Hu, Songtao & Ji, Yongming & Lu, Shan & Liu, Guodan & Tong, Zhen, 2021. "Study on key design parameters of subway source heat pump system with capillary exchanger," Renewable Energy, Elsevier, vol. 164(C), pages 183-193.

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