Viscosity of pure carbon dioxide at supercritical region: Measurement and correlation approach

Heidaryan, Ehsan; Hatami, Tahmasb; Rahimi, Masoud; Moghadasi, Jamshid

doi:10.1016/j.supflu.2010.12.006

Cited by 135 publications

(58 citation statements)

References 41 publications

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“…1. A gas booster system was used to compress natural gas to the required pressures [24]. The major drawback of the system was that the rate of release of high-pressure gas from the system had to be carefully regulated.…”

Section: Methodsmentioning

confidence: 99%

On the isobaric specific heat capacity of natural gas

Jarrahian

Karami

Heidaryan

2014

Fluid Phase Equilibria

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Section: Methodsmentioning

confidence: 99%

On the isobaric specific heat capacity of natural gas

Jarrahian

Karami

Heidaryan

2014

Fluid Phase Equilibria

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“…The round-trip exergy efficiency of the real LHTES system in the CSP plant was analyzed as well. The round-trip exergy efficiency (w round ) was determined by the exergy recovered from the HTF during the discharging process (Ex HTF_dis ) as a fraction of the total exergy supplied by the HTF during the charging process (Ex HTF_char ), which is expressed as (Jegadheeswaran et al, 2010) Table 1 Thermophysical properties of supercritical CO 2 (Amooey, 2014;Colina et al, 2003;Heidaryan et al, 2011). …”

Section: Heat Transfer Simulations and Exergy Efficiency Analysesmentioning

confidence: 99%

Analysis of a graphite foam–NaCl latent heat storage system for supercritical CO2 power cycles for concentrated solar power

Singh

et al. 2015

Solar Energy

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A latent heat thermal energy storage (LHTES) system that operates at high temperature was analyzed for applications to supercritical CO 2 (s-CO 2 ) power cycles for a concentrated solar power (CSP) plant. Because the operation temperature of the s-CO 2 power cycles is high (650-700°C), sodium chloride (NaCl), with a melting point of 800°C, was selected as the phase-change material (PCM) for energy storage. Due to the low thermal conductivity of salt materials (usually <1 W/m K), use of graphite foam was chosen to improve the overall thermal conductivity of the graphite foam-PCM combination. Three-dimensional (3-D) heat transfer simulations were conducted for the envisioned full-scale LHTES system. The anisotropic thermal conductivities of graphite foam were considered in the simulations. The thermal performance and the exergy efficiency were investigated for the full-scale LHTES system to study the improvements due to the graphite foam. The results show that this material improves the heat transfer performance in the LHTES system and, therefore, significantly reduces the total number of the heat transfer fluid (HTF) pipes needed in the storage system by a factor of 12 compared to a PCM-only system. Furthermore, the graphite foam helps to increase the exergy efficiency of the LHTES system considerably. The system parameter (i.e. HTF inlet temperature, flow velocity) effects on the thermal performance and exergy efficiency of the graphite foam-PCM LHTES system were analyzed in the paper. Moreover, the graphite foam-NaCl system matches the temperature requirements of the s-CO 2 power cycles for the CSP plant.

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“…Some viscosity measurement methods have been proposed, such as rolling ball viscometer [5], falling-body viscometer [6][7], vibrating wire-viscometer [8][9], capillary tube viscometer [10][11][12] and so on [13][14][15][16]. Most researches were conducted on the pure compounds [5,8,[10][11][12]14] and binary mixtures [6-7, 10, 16].…”

Section: Introductionmentioning

confidence: 99%

“…Most researches were conducted on the pure compounds [5,8,[10][11][12]14] and binary mixtures [6-7, 10, 16]. And data were concentrated at low temperature and different pressures.…”

Section: Introductionmentioning

confidence: 99%