Supergiant Barocaloric Effects in Acetoxy Silicone Rubber over a Wide Temperature Range: Great Potential for Solid-state Cooling

Imamura, William; Usuda, E. O.; Paixão, L. S.; Bom, Nicolau Molina; Gomes, A. M.; Carvalho, A. Magnus G.

doi:10.1007/s10118-020-2423-9

Cited by 34 publications

(54 citation statements)

References 32 publications

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“…2A and Fig. 2B for CnH2n+2 (n=14, 16 and 18) along with those reported for existing BC materials 10,[13][14][15][16][17]20,21,[29][30][31][32][33][34][35][36][37][38][39] . Here, the isothermal entropy change in references is mainly obtained by indirect method or quasi-direct method 6 .…”

supporting

confidence: 76%

Colossal and Reversible Barocaloric Effect in Phase Change Materials n-Alkanes

Lin¹,

Tong²,

Tao³

et al. 2021

Preprint

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The emergent cooling technologies based on the caloric effect provide a green alternative to the conventional vapor-compression one which brings about the serious environment problem. However, the existing caloric materials are much inferior to their traditional counterparts in cooling performance. Here we report the colossal barocaloric effect in liquid-solid-transition materials, i.e. n-alkanes. Their excellent cooling performance is superior to those for existing caloric materials and comparable to those of traditional refrigerants. Theoretical calculations suggest the liquid state n-alkanes has huge configuration entropy characterized by large dispersion of bond lengths. Appling pressure significantly reduces the configuration entropy and eventually induces the liquid-solid-transition, leading to the colossal barocaloric effect. This work provides promising refrigerants for caloric cooling technology, and opens a new avenue for exploring colossal barocaloric materials.

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supporting

confidence: 76%

Colossal and Reversible Barocaloric Effect in Phase Change Materials n-Alkanes

Lin¹,

Tong²,

Tao³

et al. 2021

Preprint

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“…17 Barocalorics materials exhibit a thermal response due to isotropic compression from hydrostatic pressure, typically associated with a concurrent first-order phase transition. 18 The BCE has been identified in many materials, [19][20][21] including elastomeric polymers, 22,23 including natural rubber, 24,25 plastic crystals, 26 magnetic memory shape alloys 27 and coordination polymers, particularly inorganic-organic perovskites that have shown the socalled giant barocaloric effect, including [TPrA][Mn (dca) 3 ], 28,29 [(CH 3 CH 2 CH 2 ) 4 N]Cd[N(CN) 2 ] 3 ([TPrA]Cd[dca] 3 ) 30 and [(CH 3 ) 4 N]Mn[N 3 ] 3 . 31 The final group of caloric solids are magnetocalorics, which were first discovered by Weiss and Picard in 1917.…”

Section: Conventional Refrigeration and The Alternative Of Solidstate...mentioning

confidence: 99%

Development of magnetocaloric coordination polymers for low temperature cooling

Falsaperna

Saines

2022

Dalton Trans.

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“…The term has dependence by the temperature of the caloric material and the external field applied to the system. The related mathematical function for Q was evaluated through a mathematical finder software, following the elaboration and the manipulation of experimental data of specific heat and ∆T ad of the barocaloric material, provided by the scientific community and published in open literature [37]. A complete description of all the steps followed by us in the Q terms building is reported by Aprea et al [35,36].…”

Section: The Active Barocaloric Technology For Cooling and Heat Pumpingmentioning

confidence: 99%

“…Among the general requirements of moderate costs, easiness of synthesis, no-toxicity, there was the necessity of manifesting large values of ∆T ad in the working temperature range. Therefore, considering the temperature range devoted to cooling and heat pumping applications, we selected a barocaloric elastomer called acetoxy silicone rubber (ASR) [37] which belongs to the class of vulcanizing rubbers. The materials of this class can be reversibly stretched many times to their initial length upon moderately low applied pressures.…”

Section: Barocaloric Refrigerantmentioning

confidence: 99%

Is Barocaloric an Eco-Friendly Technology? A TEWI Comparison with Vapor Compression under Different Operation Modes

Aprea

Greco

Maiorino

et al. 2019

Climate

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Barocaloric is a solid-state not-in-kind technology, for cooling and heat pumping, rising as an alternative to the vapor compression systems. The former is based on solid-state refrigerants and the latter on fluid ones. The reference thermodynamical cycle is called active barocaloric regenerative refrigeration (or heat pumping cycle). The main advantage of this technology is to not employ greenhouse gases, which can be toxic or damaging for the environment and that can contribute to increasing global warming. In this paper, the environmental impact of barocaloric technology was evaluated through a Total Equivalent Warming Impact (TEWI) analysis carried out with the help of a numerical 2D model solved through a finite element method. Specifically, we propose a wide investigation on the environmental impact of barocaloric technology in terms of TEWI index, also making a comparison with a vapor compression plant. The analysis focuses on both the cooling and heat pump operation modes, under different working conditions and auxiliary fluids. The results revealed that a barocaloric system based on ABR cycle could provide a reduction of the environmental impact with respect to a vapor compression system. The addition of nanofluids contributes in reducing the environmental impact up to –62%.

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Supergiant Barocaloric Effects in Acetoxy Silicone Rubber over a Wide Temperature Range: Great Potential for Solid-state Cooling

Cited by 34 publications

References 32 publications

Colossal and Reversible Barocaloric Effect in Phase Change Materials n-Alkanes

Colossal and Reversible Barocaloric Effect in Phase Change Materials n-Alkanes

Development of magnetocaloric coordination polymers for low temperature cooling

Is Barocaloric an Eco-Friendly Technology? A TEWI Comparison with Vapor Compression under Different Operation Modes

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