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Modelling and Experimental Characterisation of a Water-to-Air Thermoelectric Heat Pump with Thermal Energy Storage

Zhou, K ;; Zhu, S ;; Wang, Y ;; Roskilly, A P

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Kaixuan Zhou kaixuan.zhou@durham.ac.uk
PGR Student Doctor of Philosophy



Abstract

Nowadays, increasing the penetration of renewable heat technologies is an important approach to minimise global primary energy use and reduce CO2 emissions for a sustainable future. Thermoelectric heat pumps, which have some unique characteristics in comparison with conventional vapour compression heat pumps, can be integrated with solar thermal energy storage to form a promising renewable heat technology. However, currently, a reliable numerical model for TeHPs suitable for building energy simulation is lacking and the benefits achievable for a TeHP thanks to the integration with heat storage are unclear. To solve these issues, in this work, an experimental apparatus consisting of a water-to-air TeHP unit with a heat storage tank is modelled and tested for the first time, under the scenarios with thermal energy storage and without thermal energy storage, respectively. The results found that the developed numerical model could well predict the output performance of the TeHP unit, with deviations within 12%. Additionally, the output performance of the TeHP unit when combined with a heat storage tank is better than that of the TeHP unit without heat storage, in terms of the maximum temperature achieved in the testing box, the temperature response speed of the testing box, and the coefficient of performance (COP) of the TeHP unit. This work not only paves the way for the following building-integrated simulations of TeHP units, but also provides guidance for the design of the integrated systems that include TeHPs and thermal energy storage.

Citation

Zhou, K. ;., Zhu, S. ;., Wang, Y. ;., & Roskilly, A. P. (2024). Modelling and Experimental Characterisation of a Water-to-Air Thermoelectric Heat Pump with Thermal Energy Storage. Energies, 17(2), Article 414. https://doi.org/10.3390/en17020414

Journal Article Type Article
Acceptance Date Jan 11, 2024
Online Publication Date Jan 15, 2024
Publication Date Jan 2, 2024
Deposit Date Jan 15, 2024
Publicly Available Date Jan 23, 2024
Journal Energies
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 17
Issue 2
Article Number 414
DOI https://doi.org/10.3390/en17020414
Keywords coefficient of performance, heat pump, thermoelectric, thermal energy storage, energy conversion
Public URL https://durham-repository.worktribe.com/output/2147016

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