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An innovative pool with a passive heat removal system

Author

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  • Vitale Di Maio, Damiano
  • Naviglio, Antonio
  • Giannetti, Fabio
  • Manni, Fabio

Abstract

Heat removal systems are of primary importance in several industrial processes. As heat sink, a water pool or atmospheric air may be selected. The first solution takes advantage of high heat transfer coefficient with water but it requires active systems to maintain a constant water level; the second solution takes benefit from the unlimited heat removal capacity by air, but it requires a larger heat exchanger to compensate the lower heat transfer coefficient. In NPPs (nuclear power plants) during a nuclear reactor shutdown, as well as in some chemical plants to control runaway reactions, it is possible to use an innovative heat sink that joins the advantages of the two previous solutions. This solution is based on a special heat exchanger submerged in a water pool designed so that when heat removal is requested, active systems are not required to maintain the water level; due to the special design, when the pool is empty, atmospheric air becomes the only heat sink. The special heat exchanger design allows to have a heat exchanger without being oversized and to have a system able to operate for unlimited period without external interventions. This innovative system provides an economic advantage as well as enhanced safety features.

Suggested Citation

  • Vitale Di Maio, Damiano & Naviglio, Antonio & Giannetti, Fabio & Manni, Fabio, 2012. "An innovative pool with a passive heat removal system," Energy, Elsevier, vol. 45(1), pages 296-303.
    • Handle: RePEc:eee:energy:v:45:y:2012:i:1:p:296-303
    DOI: 10.1016/j.energy.2012.03.053
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    Cited by:

    1. Ding, Tao & Meng, Zhaoming & Chen, Kailun & Fan, Guangming & Yan, Changqi, 2020. "Experimental study on thermal stratification in water tank and heat transfer characteristics of condenser in water-cooled passive residual heat removal system of molten salt reactor," Energy, Elsevier, vol. 205(C).
    2. Chen, Kailun & Meng, Zhaoming & Yan, Changqi & Fan, Guangming & Ding, Tao, 2018. "Experimental study on start-up and steady state characteristics of passive residual heat removal system for 2 MW molten salt reactor," Energy, Elsevier, vol. 147(C), pages 826-838.

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