Review on sorption materials and technologies for heat pumps and thermal energy storage

Cabeza, Luisa F.; Solé, Aran; Barreneche, Camila

doi:10.1016/j.renene.2016.09.059

Cited by 177 publications

(68 citation statements)

References 282 publications

(89 reference statements)

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“…In the liquid-sorption energy storage systems, LiCl-H2O pair is often utilized, and the absolute storage capacities of liquid desiccants (absorption) have been reported to be 3-5 times higher than those of an ice storage system, while the energy density was stated to be 220-390 kWh/m 3 [19]. Other working pairs for thermal energy storage systems can be found in the work of Cabeza et al [20]. Henceforth, this review focuses on solid-based adsorption systems, i.e., adsorption systems for thermal energy storage.…”

Section: State-of-the-art Sorption-based Energy Storage Systemsmentioning

confidence: 99%

Sorption-based Energy Storage Systems: A Review

Thu¹,

Nasruddin²,

Mitra³

et al. 2019

MST

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Mismatched timing between the supply and demand of energy calls for reliable storage systems. Energy storage systems have become further significant with the widespread implementation of renewable energy. These systems can mitigate problems that are often associated with renewable energy sources such as supply unreliability while meeting the demand during peak hours. Energy can be stored in various forms, yet storage systems can be generally grouped based on their output forms, namely (i) electricity and (ii) heat or thermal energy. Electrical energy is the most convenient and effective form since it can power almost all modern devices. However, the electricity itself is vastly produced by thermodynamic cycles at a particular thermal efficiency using thermal energy from fossil fuels. Meanwhile, thermal energy for the HVAC&R and the production of hot water remains the largest portion of the building energy sector. Thermal energy can be stored in the form of sensible, latent, and thermochemical energy. This review focuses on thermochemical sorption-based energy storage systems. These systems exploit endothermic and exothermic sorption processes for charging and discharging of the thermal energy. Sorption-based storage systems exhibit huge potential due to a high energy density and their ability to store the energy at room temperature. We discuss the current state-of-the-art developments, key challenges, and future prospects of sorption-based energy systems.

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Section: State-of-the-art Sorption-based Energy Storage Systemsmentioning

confidence: 99%

Sorption-based Energy Storage Systems: A Review

Thu¹,

Nasruddin²,

Mitra³

et al. 2019

MST

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“…Indeed, sorption, both solid adsorption and liquid absorption, mainly relies on physical and weak chemical bonds, which require limited temperature levels (i.e., below 100 • C) to be split during the charging phase [17]. At the material level, the main activities focus on the development of novel adsorbent materials with enhanced sorption capacity and reduced driving temperature [18]. Particularly, novel composite sorbents, based on a porous structure embedding a hygroscopic salt were deeply investigated, varying both the porous matrix, i.e., vermiculite [19,20], silica gel [21,22], carbon structures [23,24] and the employed salts, i.e., LiCl, CaCl 2 , MgSO 4 , SrBr 2 [20][21][22][24][25][26] .…”

Section: Introductionmentioning

confidence: 99%

Unified Methodology to Identify the Potential Application of Seasonal Sorption Storage Technology

2020

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In this study, the definition of a new methodology for a preliminary evaluation of the working boundary conditions under which a seasonal thermal energy storage (STES) system operates is described. The approach starts by considering the building features as well as the reference heating system in terms of solar thermal collectors’ technology, ambient heat sinks/source, and space heating distribution systems employed. Furthermore, it is based on a deep climatic analysis of the place where the STES needs to be installed, to identify both winter and summer operating conditions. In particular, the STES energy density is evaluated considering different space heating demands covered by the STES (ranging from 10% up to 60%). The obtained results demonstrate that this approach allows for the careful estimation of the achievable STES density, which is varies significantly both with the space heating coverage guaranteed by the STES as well as with the ambient heat source/sink that is employed in the system. This confirms the need for careful preliminary analysis to avoid the overestimation of the STES material volume. The proposed approach was then applied for different climatic conditions (e.g., Germany and Sweden) and the volume of one of the most attractive composite sorbent materials reported in the literature, i.e., multi-wall carbon nanotubes (MWCNT)-LiCl, using water as the working fluid, needed for covering the variable space heating demand in a Nearly Zero Energy Building (NZEB) was calculated. In the case of Swedish buildings, it ranges from about 3.5 m3 when 10% of the space heating demand is provided by the STES, up to 11.1 m3 when 30% of the space heating demand is provided by the STES.

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“…Adsorptive heat transformation (AHT) is an energy-saving and environmentally friendly technology that is attracting increasing attention due to its ability to effectively convert and store waste or renewable heat [1][2][3]. The adsorption cooling [4], deep freezing [5], ice production [6], air conditioning [7], heat pumping and storage [8] have attracted a lot of research in recent decades. Nowadays, several adsorptive chillers and heat pumps are available on the market [2,9].…”

Section: Introductionmentioning

confidence: 99%

A Double-Bed Adsorptive Heat Transformer for Upgrading Ambient Heat: Design and First Tests

Tokarev

2019

Energies

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A full scale lab prototype of an adsorptive heat transformer (AHT), consisting of two adsorbers, an evaporator, and a condenser, was designed and tested in subsequent cycles of heat upgrading. The composite LiCl/SiO 2 was used as an adsorbent with methanol as an adsorbtive substance under boundary temperatures of T L /T M /T H = −30/20/30 • C. Preliminary experiments demonstrated the feasibility of the tested AHT in continuous heat generation, with specific power output of 520 W/kg over 1-1.5 h steady-state cycling. The formal and experimental thermal efficiency of the tested rig were found to be 0.5 and 0.44, respectively. Although the low potential heat to be upgraded was available for free from a natural source, the electric efficiency of the prototype was found to be as high as 4.4, which demonstrates the promising potential of the "heat from cold" concept. Recommendations for further improvements are also outlined and discussed in this paper.

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Review on sorption materials and technologies for heat pumps and thermal energy storage

Cited by 177 publications

References 282 publications

Sorption-based Energy Storage Systems: A Review

Sorption-based Energy Storage Systems: A Review

Unified Methodology to Identify the Potential Application of Seasonal Sorption Storage Technology

A Double-Bed Adsorptive Heat Transformer for Upgrading Ambient Heat: Design and First Tests

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