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Thermal Analysis of a Spiral Coil-Cylindrical Rod Heat Exchanger

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Abstract

This study analyzed a spiral coil-cylindrical rod heat exchanger that will improve the stability and thermoelectric efficiency of concentrated solar power (CSP) plants. The heat transfer in the spiral coil- cylindrical rod exchanger is analyzed using a one-dimensional unsteady heat transfer model. The model includes the cylindrical rod, the air layer, the spiral coil, and the water in the tube. The model reliability is verified against experimental data for a wide range of conditions with relative errors less than ±5.8%. The result can guide the design of spiral coil-cylindrical rod heat exchangers and predict their performance characteristics for practical engineering applications.

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Funding

This study was funded by the National Key Research and Development Project (no. 2018YFB1501005).

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Authors and Affiliations

  1. Lanzhou University of Technology, 730050, Lanzhou, China

    Keqiang Mu, Zhifeng Wang & Jinping Li

  2. Key Laboratory of Solar Thermal Energy and Photovoltaic Systems, Chinese Academy of Sciences, 100190, Beijing, China

    Keqiang Mu & Zhifeng Wang

  3. Institute of Electrical Engineering, Chinese Academy of Sciences, 100190, Beijing, China

    Keqiang Mu & Zhifeng Wang

  4. Key Laboratory of Power Station Energy Transfer Conversion and System (North China Electric Power University), Ministry of Education, 102206, Beijing, China

    Longfei Chen

Authors
  1. Keqiang Mu
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  2. Zhifeng Wang
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  4. Longfei Chen
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Corresponding author

Correspondence to Zhifeng Wang.

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Keqiang Mu, Wang, Z., Li, J. et al. Thermal Analysis of a Spiral Coil-Cylindrical Rod Heat Exchanger. Appl. Sol. Energy 57, 148–159 (2021). https://doi.org/10.3103/S0003701X21020079

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  • DOI: https://doi.org/10.3103/S0003701X21020079

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