Energy Catalyst

3103-9952

Caravel Press

10.61552/EC.2025.005

2025.005

Experimental Investigation of a Vertical Flow Moving Bed Thermochemical Heat Storage

https://orcid.org/0000-0002-5292-7567

Aydin

Devrim

devrim.aydin1@nottingham.ac.uk

https://orcid.org/0000-0003-0921-3283

Jarimi

Hasila

https://orcid.org/0000-0003-4645-6460

Yuksel

Behiye

https://orcid.org/0000-0003-1981-9107

Utlu

Zafer

https://orcid.org/0000-0002-3911-0851

Riffat

Saffa

Department of Architecture and Built Environment, University of Nottingham, University Park, Nottingham, NG7 2RD, UK; Department of Mechanical Engineering, Eastern Mediterranean University, G. Magosa, TRNC Mersin 10, Turkiye Department of Architecture and Built Environment, University of Nottingham, University Park, Nottingham, NG7 2RD, UK Faculty of Engineering and Natural Sciences, Istanbul Atlas University, 34408, Istanbul, Türkiye

18052025

1 68 78

27 January 2025

15 March 2025

18 May 2025

2025

This is an open access article under the CC BY 4.0 licence.

Thermochemical heat storage has the potential to enhance solar share in building heating systems. However, the limitation of heat and mass transfer in fixed-bed thermochemical heat storage is one of the main barriers in implementation of this technology in real life applications. In order to address this problem, a new solar driven vertical flow moving bed thermochemical heat storage system has been developed and tested in present study. According to the testing results, discharging temperature lift up to 30 ᵒC was achieved. Meanwhile, the total moisture uptake of the sorbent was varied between 310-435 g. On the other hand, solar radiation was in the range of 0.74-0.81 kW/m2 during the charging process. Air temperature between 66-72 ᵒC was obtained during different tests. Based on the solar heat gain of air and the rate of heat transfer to the sorbent inside the reactor, charging efficiency of the system was found between 0.37-0.51. Study results revealed that moving bed THS design is promising for enhancing and stabilizing the heat storage performance. However system optimization and process control are key aspects for further development of moving bed reactors.

Thermochemical Heat Storage Movıng Bed Solar Energy Sorbent Experimental

D. Gao, B. Zhao, T. H. Kwan, Y. Hao, and G. Pei, “The spatial and temporal mismatch phenomenon in solar space heating applications: status and solutions,” Applied Energy, vol. 321, p. 119326, Sep. 2022, doi: 10.1016/j.apenergy.2022.119326. 10.1016/j.apenergy.2022.119326

K. Moulakhnif et al., “Renewable approaches to building heat: exploring cutting-edge innovations in thermochemical energy storage for building heating,” Energy and Buildings, vol. 318, p. 114421, Jun. 2024, doi: 10.1016/j.enbuild.2024.114421 10.1016/j.enbuild.2024.114421

M. Karim Nejhad and D. Aydin, “Synthesize and hygro-thermal performance analysis of novel APC-CaCl2 composite sorbent for low-grade heat recovery, storage, and utilization,” Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, vol. 43, no. 23, pp. 3011– 3031, Sep. 2019, doi: 10.1080/15567036.2019.1666187. 10.1080/15567036.2019.1666187

A. B. Çolak, D. Aydin, A. Al-Ghosini, and A. S. Dalkilic, “Discharging performance prediction of experimentally tested sorption heat storage materials with machine learning method,” Journal of Energy Storage, vol. 56, pp. 106159–106159, Nov. 2022, doi: 10.1016/j.est.2022.106159. 10.1016/j.est.2022.106159

M. A. Salama, S. A. Mohamed, M. Attalla, and A. N. Shmroukh, “Experimental investigation on a thermochemical seasonal sorption energy storage battery utilizing MgSO4- H2O,” Environmental Science and Pollution Research, vol. 30, no. 43, pp. 98502–98525, Aug. 2023, doi: 10.1007/s11356-023-28875-1. 10.1007/s11356-023-28875-1

N. Beaupere, A. Malley-Ernewein, T. Nahhas, S. Ginestet, G. Samson, and M. Cyr, “Experimental study of a thermochemical energy storage system operating at low temperature with ettringite-based materials,” Solar Energy, vol. 282, p. 112927, Nov. 2024, doi: 10.1016/j.solener.2024.112927 10.1016/j.solener.2024.112927

Y. Zeng et al., “Open-cycle thermochemical energy storage for building space heating: Practical system configurations and effective energy density,” Applied Energy, vol. 376, pp. 124218–124218, Aug. 2024, doi: 10.1016/j.apenergy.2024.124218 10.1016/j.apenergy.2024.124218

L. Farcot, N. Le Pierrès, and J.-F. Fourmigué, “Experimental investigation of a moving-bed heat storage thermochemical reactor with SrBr2/H2O couple,” Journal of Energy Storage, vol. 26, p. 101009, Dec. 2019, doi: 10.1016/j.est.2019.101009. 10.1016/j.est.2019.101009

Y. Zhang, M. Hu, Z. Chen, Y. Su, and S. Riffat, “Exploring a novel tubular-type modular reactor for solar-driven thermochemical energy storage,” Renewable Energy, vol. 221, p. 119767, Feb. 2024, doi: 10.1016/j.renene.2023.119767. 10.1016/j.renene.2023.119767

Y. Zhang, T. Yan, and R. Wang, “A new strategy of dual-material reactors for stable thermal output of sorption thermal battery,” Energy, vol. 293, pp. 130692–130692, Feb. 2024, doi: 10.1016/j.energy.2024.130692. 10.1016/j.energy.2024.130692

Abdullah Al Ghosini and D. Aydin, “Comparative energy and exergy analyses of pumice and vermiculite-based salt-in-matrix composites for low-grade thermochemical heat storage applications,” International Journal of Exergy, vol. 43, no. 3, pp. 273–286, Jan. 2024, doi: 10.1504/ijex.2024.137565. 10.1504/ijex.2024.137565

Majid Karim Nejhad, D. Aydin, and M. Rezaei, “Experimental investigation of a solar-charged sorption thermal battery,” Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, vol. 237, no. 3, pp. 896–906, Jul. 2022, doi: 10.1177/09544089221111585. 10.1177/09544089221111585

J. Chen, Y. Zhang, Z. Chen, G. Gan, and Y. Su, “Impact of porous host materials on the compromise of thermochemical energy storage performance,” Renewable Energy, vol. 245, p. 122784, Mar. 2025, doi: 10.1016/j.renene.2025.122784. 10.1016/j.renene.2025.122784

L. Wang, Y. Luo, S. Guo, and G. Yang, “Experimental investigation on the thermochemical energy storage performance of MgCl2-coral aggregate composites,” Journal of Energy Storage, vol. 116, pp. 116075–116075, Mar. 2025, doi: 10.1016/j.est.2025.116075. 10.1016/j.est.2025.116075

E. Bérut et al., “Simulation of a zeolite thermochemical heat storage reactor: Impact assessment of isotherm model selection,” International Journal of Heat and Mass Transfer, vol. 231, pp. 125796–125796, Jun. 2024, doi: 10.1016/j.ijheatmasstransfer.2024.125796. 10.1016/j.ijheatmasstransfer.2024.125796

B. Kieskamp, A. Mahmoudi, and M. Shahi, “A novel multi-reactor system for thermochemical heat storage through detailed modeling of K2CO3 particles,” Journal of Energy Storage, vol. 78, p. 110028, Feb. 2024, doi: 10.1016/j.est.2023.110028 10.1016/j.est.2023.110028

M. S. Buker, B. Mempouo, and S. B. Riffat, “Performance evaluation and techno-economic analysis of a novel building integrated PV/T roof collector: An experimental validation,” Energy and Buildings, vol. 76, pp. 164–175, Jun. 2014, doi: 10.1016/j.enbuild.2014.02.078. 10.1016/j.enbuild.2014.02.078