Adsorption Heat Storage: State-of-the-Art and Future Perspectives

Vasta, Salvatore; Brancato, Vincenza; Rosa, Davide La; Palomba, Valeria; Restuccia, G.; Aristov, Yu. I.; Frazzica, Andrea

doi:10.3390/nano8070522

Cited by 63 publications

(43 citation statements)

References 21 publications

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“…In addition, it has been proved that the application of a TES to renewable-based energy systems improves their efficiency [2]. Different technologies for storing thermal energy have been proposed, such as sensible heat, latent heat, and heat of reaction [3].…”

Section: Introductionmentioning

confidence: 99%

“…Several combinations of salt hydrates and matrices for thermal energy storage exist. One of the salts that have been extensively evaluated in the scientific literature is MgSO 4 •7H 2 O, whose theoretical energy storage density is 2.8 GJ/m 3 [11] and can be used under both ambient pressure and sub-atmospheric pressure [12], thus being suitable for the application in open cycles or closed cycles. The salt can be efficiently regenerated also at temperatures < 150 • C, compatible with the integration in low-grade heat recovery systems or solar systems in buildings [13].…”

Section: Introductionmentioning

confidence: 99%

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Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications

et al. 2020

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Salt hydrates, such as MgSO4∙7H2O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion and swelling problems during hydration/dehydration cycles. In order to overcome these limitations, a composite material based on silicone vapor-permeable foam filled with the salt hydrate is here presented. For its characterization, a real-time in situ environmental scanning electron microscopy (ESEM) investigation was carried out in controlled temperature and humidity conditions. The specific set-up was proposed as an innovative method in order to evaluate the morphological evolution of the composite material during the hydrating and dehydrating stages of the salt. The results evidenced an effective micro-thermal stability of the material. Furthermore, dehydration thermogravimetric/differential scanning calorimetric (TG/DSC) analysis confirmed the improved reactivity of the realized composite foam compared to pure MgSO4∙7H2O.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications

et al. 2020

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“…The first task carried out within the research was the sizing and design of the small cold sorption storage system. The system realized consists of an adsorber and a phase-changer, and it operates according to the working principle already described in [13].…”

Section: Design Of the Adsorbermentioning

confidence: 99%

Adsorption Cold Storage for Mobile Applications

et al. 2020

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In recent years, hot and cold storage systems demonstrated themselves to be key components, especially in systems for waste heat exploitation. Moreover, mobile A/C and refrigeration set new efficiency challenges in the field of goods and passengers transport. In such a context, adsorption cold storage devices enable new possibilities and show promising features: high energy density and the possibility of being operated both for heat and cold release to the user. However, only a few studies on small and compact systems for mobile applications have been carried out so far, especially for cold storage exploiting low-temperature sources (<100 °C). The present paper describes the realization and testing of two different types of cold storage based on two innovative adsorbent reactors: a pelletized adsorber filled with commercial FAM Z02 zeolite, and a composite adsorber based on an aluminum porous structure and a SAPO-34 coating. An already developed testing procedure was employed to characterize the prototypes under cold storage mode for mobile refrigeration purposes. The test clearly showed that prototypes can store up to 580 Wh, with an average power during the discharging phase that ranges from 200 W to 820 W and an energy efficiency of 0.3 Whdischarged/Whcharged for the operations in the selected conditions, thus revealing promising opportunities for future further developments.

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“…In fact, since vapor-solid sorption is preferred to achieve larger heat storage density and improved adsorption/desorption dynamics, sorption heat storage systems typically require de-pressurized reactor vessels, vacuum pumps and various valves and tubes for managing the sorbate flow from/to the sorbent bed (Zettl et al, 2014). Such technological complexity does not represent an issue for building installations (e.g., heat pumps and seasonal TES, Calabrese et al, 2017;Vasta et al, 2018); whereas, this may be unpractical in applications where the simplicity of a longterm TES system should be prioritized with respect to its heat storage performance.…”

Section: Introductionmentioning

confidence: 99%

Water/Ethanol and 13X Zeolite Pairs for Long-Term Thermal Energy Storage at Ambient Pressure

et al. 2019

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Thermal energy storage is a key technology to increase the global energy share of renewables-by matching energy availability and demand-and to improve the fuel economy of energy systems-by recovery and reutilization of waste heat. In particular, the negligible heat losses of sorption technologies during the storing period make them ideal for applications where long-term storage is required. Current technologies are typically based on the sorption of vapor sorbates on solid sorbents, requiring cumbersome reactors and components operating at below ambient pressure. In this work, we report the experimental characterization of working pairs made of various liquid sorbates (distilled water, ethanol and their mixture) and a 13X zeolite sorbent at ambient pressure. The sorbent hydration by liquid sorbates shows lower heat storage performance than vapor hydration; yet, it provides similar heat storage density to that obtainable by latent heat storage (40-50 kWh/m 3) at comparable costs, robustness and simplicity of the system, while gaining the long-term storage capabilities of sorption-based technologies. As a representative application example of long-term storage, we verify the feasibility of a sorption heat storage system with liquid sorbate, which could be used to improve the cold-start of stand-by generators driven by internal combustion engines. This example shows that liquid hydration may be adopted as a simple and low-cost alternative to more efficient-yet more expensive-techniques for long-term energy storage.

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Adsorption Heat Storage: State-of-the-Art and Future Perspectives

Cited by 63 publications

References 21 publications

Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications

Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications

Adsorption Cold Storage for Mobile Applications

Water/Ethanol and 13X Zeolite Pairs for Long-Term Thermal Energy Storage at Ambient Pressure

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