In this paper, we investigate sensible and latent heat transfer through heat exchanger matrix structures containing phase change material (PCM) in the interstitial spacing. The heat transfer is driven by a temperature difference between fluid flow passages and the phase change material matrix which experiences sensible heat transfer until it reaches the phase change material fusion point; then it undergoes melting or solidification in order to store, or reject, energy. In prior work, a dimensionless framework was established to model heat transfer in a thermal energy storage (TES) device much like effectiveness-NTU analysis methods for compact heat exchangers. A key difference, however, is that in TES units, the overall heat transfer coefficient, U, within the phase change material matrix varies spatially in the unit and with time during storage or extraction. Determination of a mean U for these processes is a key challenge to applying the effectiveness-NTU analysis to design of a TES unit. This paper assesses and identifies strategies for determining the matrix overall heat transfer coefficient in a TES unit from model predictions or experiments. The sensitivity of the TES energy efficiency to the matrix overall heat transfer coefficient is also explored, and the implications for some typical applications are discussed.
Skip Nav Destination
ASME 2017 Heat Transfer Summer Conference
July 9–12, 2017
Bellevue, Washington, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-5788-5
PROCEEDINGS PAPER
Modeling of Intramatrix Heat Transfer in Thermal Energy Storage for Asynchronous Cooling Available to Purchase
Andrea Helmns,
Andrea Helmns
University of California, Berkeley, CA
Search for other works by this author on:
Van P. Carey
Van P. Carey
University of California, Berkeley, CA
Search for other works by this author on:
Andrea Helmns
University of California, Berkeley, CA
Van P. Carey
University of California, Berkeley, CA
Paper No:
HT2017-4870, V001T09A006; 11 pages
Published Online:
October 18, 2017
Citation
Helmns, A, & Carey, VP. "Modeling of Intramatrix Heat Transfer in Thermal Energy Storage for Asynchronous Cooling." Proceedings of the ASME 2017 Heat Transfer Summer Conference. Volume 1: Aerospace Heat Transfer; Computational Heat Transfer; Education; Environmental Heat Transfer; Fire and Combustion Systems; Gas Turbine Heat Transfer; Heat Transfer in Electronic Equipment; Heat Transfer in Energy Systems. Bellevue, Washington, USA. July 9–12, 2017. V001T09A006. ASME. https://doi.org/10.1115/HT2017-4870
Download citation file:
41
Views
Related Proceedings Papers
Related Articles
Selection of Phase Change Material for Latent Heat Thermal Energy Storage Using a Hairpin Heat Exchanger: Numerical Study
J. Thermal Sci. Eng. Appl (September,2024)
A General Model for Analyzing the Thermal Performance of the Heat Charging and Discharging Processes of Latent Heat Thermal Energy Storage Systems
J. Sol. Energy Eng (August,2001)
Numerical and Experimental Investigation on a Combined Sensible and Latent Heat Storage Unit Integrated With Solar Water Heating System
J. Sol. Energy Eng (November,2009)
Related Chapters
Numerical Study on Dynamic Charging Performance of Packed Bed Using Spherical Capsules Containing N-Tetradecane
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Thermal Design Guide of Liquid Cooled Systems
Thermal Design of Liquid Cooled Microelectronic Equipment
Numerical Analysis of a Latent Heat Storage Heat Exchanger Considering the Effect of Natural Convection
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)