Operational planning of an engine generator using a high pressure working fluid composed of CO2 hydrate

Obara, Shin’ya; Yamada, Toshio; Matsumura, Kazuo; Takahashi, Shirō; Kawai, Masahito; Balaji, Ramachandran

doi:10.1016/j.apenergy.2011.06.014

Cited by 29 publications

(7 citation statements)

References 10 publications

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“…Inorganic salts such as TBA+ or TBP+ play a vital role in forming ionic semiclathrate hydrates. 9 Contrary to popular belief, clathrate hydrate is harmful in industry, but in addition to being used in air conditioning systems, it has other practical applications such as gas storage, 10 transportation, 11 CO 2 hydrate composite for ocean carbon sequestration, 12 power engines, 13,14 seawater desalination, 15 and so on. Eslamimanesh et al have done extensive studies on the behavior of tetra-n-butylammonium bromide (TBAB) hydrate formation that could act as both a guest and host.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Semiclathrate Hydrates Formation TBAOH, TBAF, and TBAC in the Presence of SDS and Tween Surfactants as a Cold Thermal Energy Storage System for Air Conditioning Applications

Khafaei

Kamran-Pirzaman

2021

J. Chem. Eng. Data

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Over the past decades, the increasing use of air conditioning systems has been one of the main drivers for reducing the peak of electricity consumption. PCMs (phase change materials) for cold thermal energy storage (CTES) allow us to achieve a heat capacity for future use. Hence, CTES has been suggested to reduce power demand problems. In this study, to obtain the phase change temperature and formation temperature of TBAF, TBAC, and TBAOH semiclathrate salts as CTES for air conditioning applications, the experiments were performed from 10 to 50 wt %. Also, the effect of two additives, Tween 80 and SDS, at three weight percentages (0.1, 0.3, and 0.5 wt %) on formation temperature and phase change temperature was investigated. Furthermore, the effects of SDS and Tween mixtures using Design Expert software and Analysis of Variance (ANOVA) were analyzed and optimized. The results showed that, in general, TBAF hydrate solution had a higher phase change temperature and formation temperature than TBAC and TBAOH salt semiclathrate. The highest phase change temperature for all salts TBAF, TBAC, and TBOAH occurred at approximately 35 wt %, and their temperatures were 24.6 °C, 14.1 °C, and 12.8 °C, respectively. Using SDS and Tween additives, the phase change temperature and hydrate deflection time of TBAC, TBAF, and TBAOH were 21.73 °C, 26.08 °C, and 28.84 °C and 32.31 min, 25.92 min, and 20.20 min, respectively. With the Design Expert software, a model for the phase change temperature and deflection time of each hydrate was obtained. In the optimization section, a condition of the optimal hydrate formation was proposed.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of Semiclathrate Hydrates Formation TBAOH, TBAF, and TBAC in the Presence of SDS and Tween Surfactants as a Cold Thermal Energy Storage System for Air Conditioning Applications

Khafaei

Kamran-Pirzaman

2021

J. Chem. Eng. Data

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“…Environmentally friendly and safe working media of the power generation/heat pump systems is needed. CO 2 hydrate is a suitable candidate for the working media because CO 2 hydrate captures and releases large amount of CO 2 gas with hydrate formation and decomposition [3]. CO 2 hydrate is more environmentally friendly than fluorocarbons and ammoniabased mixtures and safer than hydrocarbons because CO 2 hydrate is composed of only H 2 O and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Hydrates have several unique characteristics: high gas storage capacity, guest-substance selectivity and large enthalpy of formation/decomposition. Various hydrate-related new technologies are proposed, e.g., storage and transportation media for gases such as natural gases [1] or ozone [2], and development for heat pump systems or power generation systems [3]. Hydrates are also related to environmental issues.…”

Section: Introductionmentioning

confidence: 99%

Phase equilibrium condition measurements in carbon dioxide clathrate hydrate forming system from 199.1 K to 247.1 K

Nagashima

Fukushima

Ohmura

2016

Fluid Phase Equilibria

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“…However, the technology described above requires electric power, and if fossil fuels are to be avoided, it means an increase in either thermal or nuclear power generation. The purpose of this study was, therefore, the development of a complex of cogeneration and the GHB system, using a small-scale natural gas engine [20,21] to reduce fossil fuel consumption for cold regions during winter, and subsequently greenhouse gases.…”

Section: Introductionmentioning

confidence: 99%

Development of a compound energy system for cold region houses using small-scale natural gas cogeneration and a gas hydrate battery

Obara

Kikuchi

Ishikawa

et al. 2015

Energy

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Operational planning of an engine generator using a high pressure working fluid composed of CO2 hydrate

Cited by 29 publications

References 10 publications

Experimental Study of Semiclathrate Hydrates Formation TBAOH, TBAF, and TBAC in the Presence of SDS and Tween Surfactants as a Cold Thermal Energy Storage System for Air Conditioning Applications

Experimental Study of Semiclathrate Hydrates Formation TBAOH, TBAF, and TBAC in the Presence of SDS and Tween Surfactants as a Cold Thermal Energy Storage System for Air Conditioning Applications

Phase equilibrium condition measurements in carbon dioxide clathrate hydrate forming system from 199.1 K to 247.1 K

Development of a compound energy system for cold region houses using small-scale natural gas cogeneration and a gas hydrate battery

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