Prototyping of a real size air-conditioning system using a tetra-n-butylammonium bromide semiclathrate hydrate slurry as secondary two-phase refrigerant – Experimental investigations and modelling

Douzet, Jérôme; Kwaterski, Matthias; Lallemand, Alain; Chauvy, Fabien; Flick, Denis; Herri, Jean‐Michel

doi:10.1016/j.ijrefrig.2013.04.015

Cited by 67 publications

(31 citation statements)

References 14 publications

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“…Many potential applications relevant to CCS technology are presently being developed, e.g., gas storage and separation. Among the numerous ionic clathrate hydrate formers, tetra-n-butylammonium bromide (TBAB) has been tested for various applications because of its availability and low toxicity [2][3][4][5]. Ionic clathrate hydrates form from an aqueous solution of an ionic guest substance pressurized with a guest gas, and therefore the guest gas solubility is a factor for the formation reaction.…”

Section: Introductionmentioning

confidence: 99%

Experimental measurements of carbon dioxide solubility in aqueous tetra-n-butylammonium bromide solutions

Muromachi

Shijima

Miyamoto

et al. 2015

The Journal of Chemical Thermodynamics

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Section: Introductionmentioning

confidence: 99%

Experimental measurements of carbon dioxide solubility in aqueous tetra-n-butylammonium bromide solutions

Muromachi

Shijima

Miyamoto

et al. 2015

The Journal of Chemical Thermodynamics

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“…Real-sized prototypes have been implemented and studied [50]. A compression cycle refrigeration unit (with a condenser installed outside the building) allowed, via a scraped surface heat exchanger (cooled down by the evaporator), the creation of TBAB hydrates slurries, which were stored in a tank during the night [36].…”

Section: Clathrate Hydrates As Phase Change Materialsmentioning

confidence: 99%

Clathrate Hydrates for Thermal Energy Storage in Buildings: Overview of Proper Hydrate-Forming Compounds

Castellani¹,

Morini

Filipponi

et al. 2014

Sustainability

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Increasing energy costs are at the origin of the great progress in the field of phase change materials (PCMs). The present work aims at studying the application of clathrate hydrates as PCMs in buildings. Clathrate hydrates are crystalline structures in which guest molecules are enclosed in the crystal lattice of water molecules. Clathrate hydrates can form also at ambient pressure and present a high latent heat, and for this reason, they are good candidates for being used as PCMs. The parameter that makes a PCM suitable to be used in buildings is, first of all, a melting temperature at about 25 °C. The paper provides an overview of groups of clathrate hydrates, whose physical and chemical characteristics could meet the requirements needed for their application in buildings. Simulations with a dynamic building simulation tool are carried out to evaluate the performance of clathrate hydrates in enhancing thermal comfort through the moderation of summer temperature swings and, therefore, in reducing energy consumption. Simulations suggest that clathrate hydrates have a potential in terms of improvement of indoor thermal comfort and a reduction of energy consumption for cooling. Cooling effects of 0.5 °C and reduced overheating hours of up to 1.1% are predicted. OPEN ACCESSSustainability 2014, 6 6816

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“…Because of low toxicity and high availability, tetra‐ n ‐butylammonium bromide (TBAB) has been used in various applications . One of them is using TBAB as promoter molecule to form hydrate lattice, which is used as a cold storage and transportation medium in the air‐conditioning system because of their high latent heat in temperature ranges of 5°C to 12°C and their applicable properties in transportation and pumping .…”

Section: Introductionmentioning

confidence: 99%

“…2 Because of low toxicity and high availability, tetra-n-butylammonium bromide (TBAB) has been used in various applications. [3][4][5][6] One of them is using TBAB as promoter molecule to form hydrate lattice, which is used as a cold storage and transportation medium in the air-conditioning system because of their high latent heat in temperature ranges of 5°C to 12°C and their applicable properties in transportation and pumping. [7][8][9][10] Semiclathrate hydrates are formed when an aqueous solution of a promoter molecule is placed in contact with a guest gas; consequently, the reaction of formation is affected by the guest gas solubility.…”

Section: Introductionmentioning

confidence: 99%

Accurate model based on artificial intelligence for prediction of carbon dioxide solubility in aqueous tetra‐n‐butylammonium bromide solutions

Hoseinpour

Barati-Harooni

Nadali

et al. 2017

Journal of Chemometrics

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This study highlights the application of radial basis function (RBF) neural networks, adaptive neuro‐fuzzy inference systems (ANFIS), and gene expression programming (GEP) in the estimation of solubility of CO2 in aqueous solutions of tetra‐n‐butylammonium bromide (TBAB). The experimental data were gathered from a published work in literature. The proposed RBF network was coupled with genetic algorithm (GA) to access a better prediction performance of model. The structure of ANFIS model was trained by using hybrid method. The input parameters of the model were temperature, pressure, mass fraction of TBAB in feed aqueous solution (wTBAB), and mole fraction of TBAB in aqueous phase (xTBAB). The solubility of CO2 (xCO2) was the output parameter. Statistical and graphical analyses of the results showed that the proposed GA‐RBF, Hybrid‐ANFIS, and GEP models are robust and precise in the estimation of literature solubility data.

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Prototyping of a real size air-conditioning system using a tetra-n-butylammonium bromide semiclathrate hydrate slurry as secondary two-phase refrigerant – Experimental investigations and modelling

Cited by 67 publications

References 14 publications

Experimental measurements of carbon dioxide solubility in aqueous tetra-n-butylammonium bromide solutions

Experimental measurements of carbon dioxide solubility in aqueous tetra-n-butylammonium bromide solutions

Clathrate Hydrates for Thermal Energy Storage in Buildings: Overview of Proper Hydrate-Forming Compounds

Accurate model based on artificial intelligence for prediction of carbon dioxide solubility in aqueous tetra‐n‐butylammonium bromide solutions

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