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Centralized latent heat thermal energy storage system: Model development and validation

El-sawi, A., Haghighat, F. and Akbari, H.
2013
Energy and Buildings, Volume 65, October 2013, Pages 260-271
Central energy storage; Heat transfer model; Simulation; Phase change materials

El-sawi, A., Haghighat, F. and Akbari, H., (2013), "Centralized latent heat thermal energy storage system: Model development and validation", Energy and Buildings, Volume 65, October 2013, Pages 260-271.
Abstract

Centralized latent heat thermal energy storage (LHTES) system offers potential benefits in energy efficiency, in load shifting, and in emergency heating/cooling load systems. A three-dimensional heat transfer model of a LHTES is developed to investigate the quasi-steady state and transient heat transfer of phase change materials (PCMs). The prediction of model is in good agreement with the experimental data. The effect of convective heat transfer on the melting rate of PCM is assessed. Through a parametric study, the effect of the temperature, PCM phase change temperature range, and the temperature difference of the incoming air and PCM melting temperature on thermal performance of PCM is undertaken. The temperature difference between the air as a heat transfer fluid (HTF) and the PCM melting point has a significant effect on the performances of a LHTES system. The thermal energy retrieved from the centralized LHTES system is the highest when the inlet air temperature is about 10 K higher than the PCM mean melting temperature. Correlations are obtained for the distribution of melting front and solid fraction as a function of time during charging and discharging of LHTES. These correlations can be used for further component optimization and design of cooling and heating systems.

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Author Information and Other Publications Notes
El-sawi, A.
  1. Assessing long-term performance of centralized thermal energy storage system  
Haghighat, F.
  1. An integrated zonal model for predicting transient VOC distribution in a ventilated room
  2. An integrated zonal model to predict transient indoor humidity distribution
  3. Assessing long-term performance of centralized thermal energy storage system
  4. Best Practice for Architects and Engineers
  5. Designing building envelope with PCM wallboards: Design tool development
  6. Energy-Storing Wallboard: Flammability Tests
  7. Final Report, IEA, annex 23, applying energy storage in buildings of the future
  8. Measurement of diffusion coefficients of VOCs for building materials: review and development of a calculation procedure
  9. Modeling moisture accumulation in multi-layered building materials, MODELING MOISTURE IN RESIDENTIAL BUILDINGS WITH A MULTIZONE IAQ PROGRAM
  10. Modeling of phase change materials for applications in whole building simulation
  11. Modelling of volatile organic compounds emission from dry building materials
  12. Modified cup for testing of water vapour transmission through thick, permeable materials
  13. Optimization of ventilation system design and operation in office environment
  14. Zonal Models for Indoor Air Flow - A Critical Review  
Akbari, H.
  1. Assessing long-term performance of centralized thermal energy storage system
  2. The impact of reflectivity and emissivity of roofs on building cooling and heating energy use  


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