Carbon dioxide hydrates for cold thermal energy storage: A review

Wang, Xiaolin; Zhang, Fengyuan; Lipínski, Wojciech

doi:10.1016/j.solener.2020.09.035

Cited by 52 publications

(24 citation statements)

References 179 publications

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“…However, when the pressure is above the pressure of the highest temperature point (i.e., P > 3.246 MPa), the temperature will gradually decrease with the increase of pressure. Matsumoto et al 26 thought that this phenomenon may be caused by the negative change of the partial molar volume of the cyclopentanone and the occupancy of CO 2 to the small cage (5 12 ) during the hydrate decomposition. In this work, we think that the promotion effect of cyclopentanone on CO 2 hydrate is weakened when the pressure is above 3.246 MPa and mixed hydrates of structure I and structure II form.…”

Section: Resultsmentioning

confidence: 99%

“…In recent years, gas hydrates have played an important role in the fields of gas separation, − seawater desalination, , gas storage and transportation, − and cold storage. , Compared with traditional water storage, eutectic salt storage, and ice storage, cold storage in hydrates has advantages, such as high energy storage density and high phase transition temperature. CO 2 hydrate is a good medium for cold storage, whose latent heat reaches about 500 kJ/kg .…”

Section: Introductionmentioning

confidence: 99%

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Effect of HFE254 or Cyclopentanone on Phase Equilibrium Dissociation Conditions for Carbon Dioxide Hydrate

Song

Sun

et al. 2021

J. Chem. Eng. Data

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Hydrate equilibrium conditions of the CO2 + HFE254 or cyclopentanone + water system are determined by the isometric method. The presence of cyclopentanone promotes CO2 hydrate formation, while HFE254 does not affect the equilibrium pressure of CO2 hydrate. The hydrate dissociation temperature of the CO2 + cyclopentanone system increases as the pressure increases. However, the hydrate equilibrium temperature gradually decreases when pressure is above 3.2 MPa and a mixed hydrate of structure I and structure II forms. It can be seen that cyclopentanone is a thermodynamic accelerator that can promote the formation of CO2 hydrate.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of HFE254 or Cyclopentanone on Phase Equilibrium Dissociation Conditions for Carbon Dioxide Hydrate

Song

Sun

et al. 2021

J. Chem. Eng. Data

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“…In recent years, hydrates have received much attention as a new clean energy source, and hydrate-based technology is considered as a promising approach to solve energy and environmental problems, e.g., through global warming mitigation by capturing and storing carbon dioxide [9,10], and in heavy metal separation for wastewater treatment [11] and desalination [12]. Hydrates are also considered ideal working substances for cold storage due to the latent heat of gas hydrates being equivalent to that of ice, with a high phase-change temperature of 5-12 • C, high cold-storage density, and small specific volume, thereby overcoming disadvantages such as the low heat storage density, low storage temperature, and susceptibility to aging and failure of water, ice, and eutectic salts, respectively [6][7][8]13,14].…”

Section: Of 14mentioning

confidence: 99%

Hydrates for Cold Storage: Formation Characteristics, Stability, and Promoters

Chen¹,

Han

Chen

et al. 2021

Applied Sciences

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The potential of hydrates formed from R141b (CH3CCl2F), trimethylolethane (TME), and tetra-n-butylammonium bromide/tetra-n-butylammonium chloride (TBAB/TBAC) to be used as working substances for cold storage was investigated to provide a solution for unbalanced energy grids. In this study, the characteristics of hydrate formation, crystal morphology of hydrates, and the stability of hydrate in cyclic formation under 0.1 MPa and at 5 °C were carried out. It found that the ice had a positive effect on the hydrate formation under same conditions. Upon the addition of the ice cube, the induction time of R141b, TME, and TBAB/TBAC hydrates decreased markedly, and significantly high formation rates were obtained. Under magnetic stirring, the rate at which TBAB/TBAC formed hydrates was significantly lower than that when ice was used. In microscopic experiments, it was observed that the TBAB/TBAC mixture formed hydrates with more nucleation sites and compact structures, which may increase the hydrate formation rate. In the multiple cycle formation of TBAB/TBAC hydrates, the induction time gradually decreased with the increasing number of formation cycles and finally stabilized, which indicated the potential of the TBAB/TBAC hydrates for application in cold storage owing to their good durability and short process time for heat absorption and release.

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“…5,14–17 Because methane is an extremely potent greenhouse gas, its emission from natural reservoirs could greatly exacerbate global climate warming. 18–20 The ability to control hydrate formation and to manage hydrate stability is thus of great importance to various applications, including, inter alia , gas storage, 21–24 gas separation, 25–28 desalination, 29–32 cold energy storage, 33–36 and CO 2 capture and storage 37–44 – just to name a few pivotal areas.…”

Section: Introductionmentioning

confidence: 99%