The Performance of Thermal Energy Storage Systems

  • R. J. Wood
  • M. A. Bell
  • P. W. O’Callaghan
  • I. E. Smith
  • S. D. Probert
Conference paper

Summary

The storage of low grade thermal energy in water, encapsulated phase change materials and saturated salt solutions has been studied with three objectives in mind:
  1. 1)

    To formulate valid computer programs to simulate storage characteristics.

     
  2. 2)

    To identify and solve any technical problems associated with store design and operation.

     
  3. 3)

    To minimise total costs of systems which incorporate thermal energy storage.

     

Research to date has shown that heat storage in water, although bulky, is the least expensive but that to operate effectively, thermal stratification must be promoted. The effects of various parameters on stratification have been measured and correlated.

Encapsulated phase change material stores are currently the most expensive but have good potential for store volume reduction combined with technical simplicity. Their adoption hinges on the potential for reducing encapsulation and materials costs.

Saturated salt solution stores are intermediate in cost and offer reasonable reductions in volume. However, their effective operation depends on the solution of technical problems of which heat exchanger fouling and nucleation from the solution are foremost. Some novel innovations to solve these problems are currently being researched.

Keywords

Hydrate Stratification Paraffin Calorimeter Encapsulation 

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References

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Copyright information

© ECSC, EEC, EAEC, Brussels and Luxemburg 1980

Authors and Affiliations

  • R. J. Wood
    • 1
  • M. A. Bell
    • 1
  • P. W. O’Callaghan
    • 1
  • I. E. Smith
    • 1
  • S. D. Probert
    • 1
  1. 1.Applied Energy Group, School of Mechanical EngineeringCranfield Institute of TechnologyCranfieldUK

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